Organization pitching register - 2021
Regular season
| Primary |
| Name | Team | P | Age | ERA | W | L | S | G | GS | CG | SHO | INN | H | R | ER | BB | K | HR | GDP |
| Bryan Abreu | Hou | mr | 24 | 0.00 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 3.0 | 4 | 0 | 0 | 1 | 1 | 0 | 1 |
| Jason Adam | Tor | mr | 29 | 3.77 | 2 | 2 | 0 | 35 | 0 | 0 | 0 | 43.0 | 41 | 18 | 18 | 18 | 67 | 9 | 0 |
| Austin Adams | LAA | mr | 30 | 16.20 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 1.2 | 2 | 3 | 3 | 2 | 4 | 0 | 0 |
| Keegan Akin* | Min | sp | 26 | 3.82 | 6 | 7 | 0 | 21 | 21 | 0 | 0 | 108.1 | 92 | 46 | 46 | 49 | 130 | 9 | 7 |
| Jorge Alcala | Col | mr | 25 | 3.55 | 1 | 1 | 2 | 23 | 0 | 0 | 0 | 38.0 | 42 | 17 | 15 | 16 | 41 | 3 | 7 |
| Sandy Alcantara | SD | sp | 25 | 4.65 | 7 | 6 | 0 | 18 | 18 | 1 | 0 | 108.1 | 99 | 57 | 56 | 51 | 119 | 18 | 15 |
| Scott Alexander* | LAD | mr | 31 | 3.76 | 4 | 2 | 2 | 30 | 0 | 0 | 0 | 38.1 | 41 | 21 | 16 | 24 | 21 | 3 | 6 |
| Tyler Alexander* | LAD | mr | 26 | 2.88 | 0 | 1 | 0 | 26 | 0 | 0 | 0 | 40.2 | 44 | 16 | 13 | 11 | 42 | 5 | 9 |
| Kolby Allard* | Min | sp | 23 | 5.59 | 5 | 10 | 0 | 27 | 27 | 0 | 0 | 122.1 | 132 | 89 | 76 | 75 | 90 | 15 | 4 |
| Yency Almonte | Mia | mr | 27 | 2.51 | 8 | 1 | 8 | 73 | 0 | 0 | 0 | 93.1 | 72 | 30 | 26 | 19 | 84 | 6 | 12 |
| Dan Altavilla | Tex | mr | 28 | 6.79 | 1 | 3 | 1 | 43 | 0 | 0 | 0 | 62.1 | 75 | 48 | 47 | 40 | 68 | 7 | 6 |
| Jose Alvarado* | Pit | mr | 26 | 2.92 | 0 | 0 | 1 | 12 | 0 | 0 | 0 | 12.1 | 16 | 6 | 4 | 5 | 16 | 1 | 1 |
| Jose Alvarez* | Cin | mr | 32 | 3.00 | 1 | 0 | 0 | 8 | 0 | 0 | 0 | 12.0 | 7 | 4 | 4 | 4 | 12 | 1 | 1 |
| Adbert Alzolay | ChC | sp | 26 | 2.38 | 6 | 2 | 0 | 13 | 13 | 0 | 0 | 68.0 | 33 | 19 | 18 | 33 | 107 | 4 | 7 |
| Brett Anderson* | TB | sp | 33 | 5.96 | 6 | 18 | 0 | 30 | 30 | 0 | 0 | 155.2 | 200 | 111 | 103 | 36 | 117 | 29 | 12 |
| Chase Anderson | TB | sp | 33 | 7.79 | 0 | 6 | 0 | 58 | 1 | 0 | 0 | 119.0 | 167 | 109 | 103 | 30 | 131 | 38 | 8 |
| Ian Anderson | SF | sp | 23 | 2.42 | 6 | 6 | 0 | 19 | 19 | 0 | 0 | 126.2 | 87 | 37 | 34 | 43 | 144 | 10 | 5 |
| Nick Anderson | SD | cl | 30 | 1.37 | 9 | 3 | 27 | 57 | 0 | 0 | 0 | 85.1 | 36 | 14 | 13 | 19 | 122 | 3 | 2 |
| Shaun Anderson | SF | mr | 26 | 5.15 | 1 | 5 | 0 | 29 | 0 | 0 | 0 | 43.2 | 36 | 25 | 25 | 25 | 54 | 7 | 1 |
| Tyler Anderson* | Oak | sp | 31 | 4.88 | 6 | 10 | 0 | 29 | 24 | 0 | 0 | 138.1 | 143 | 80 | 75 | 60 | 103 | 15 | 9 |
| Matt Andriese | SF | mr | 31 | 4.01 | 5 | 5 | 8 | 45 | 3 | 0 | 0 | 89.2 | 61 | 45 | 40 | 36 | 96 | 17 | 14 |
| Tejay Antone | ChW | mr | 27 | 1.92 | 11 | 2 | 5 | 33 | 14 | 0 | 0 | 112.1 | 59 | 26 | 24 | 54 | 135 | 13 | 10 |
| Shawn Armstrong | Hou | mr | 30 | 3.16 | 0 | 2 | 1 | 21 | 0 | 0 | 0 | 25.2 | 19 | 12 | 9 | 7 | 22 | 1 | 1 |
| Shawn Armstrong | Mil | mr | 30 | 2.29 | 3 | 0 | 1 | 17 | 0 | 0 | 0 | 19.2 | 13 | 5 | 5 | 6 | 22 | 2 | 0 |
| Shawn Armstrong |   | mr | 30 | 2.78 | 3 | 2 | 2 | 38 | 0 | 0 | 0 | 45.1 | 32 | 17 | 14 | 13 | 44 | 3 | 1 |
| Jake Arrieta | KC | sp | 35 | 6.57 | 5 | 13 | 0 | 24 | 24 | 3 | 1 | 135.2 | 182 | 112 | 99 | 66 | 106 | 24 | 24 |
| Luis Avilan* | LAD | mr | 31 | 0.00 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 4.0 | 2 | 0 | 0 | 1 | 2 | 0 | 2 |
| Dakota Bacus | Cin | mr | 30 | 0.00 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 3.0 | 4 | 0 | 0 | 1 | 1 | 0 | 2 |
| Dakota Bacus | Cle | mr | 30 | 8.46 | 1 | 1 | 0 | 25 | 0 | 0 | 0 | 27.2 | 40 | 33 | 26 | 20 | 14 | 6 | 2 |
| Dakota Bacus |   | mr | 30 | 7.63 | 1 | 1 | 0 | 27 | 0 | 0 | 0 | 30.2 | 44 | 33 | 26 | 21 | 15 | 6 | 4 |
| Pedro Baez | Col | mr | 33 | 3.23 | 4 | 3 | 4 | 48 | 0 | 0 | 0 | 69.2 | 59 | 33 | 25 | 32 | 54 | 8 | 3 |
| Brandon Bailey | Min | mr | 26 | 4.50 | 0 | 0 | 0 | 17 | 0 | 0 | 0 | 24.0 | 17 | 12 | 12 | 13 | 14 | 4 | 3 |
| Homer Bailey | SF | sp | 35 | 6.00 | 0 | 3 | 0 | 5 | 5 | 0 | 0 | 27.0 | 38 | 19 | 18 | 18 | 24 | 3 | 4 |
| Caleb Baragar* | Det | mr | 27 | 2.06 | 2 | 1 | 5 | 58 | 0 | 0 | 0 | 87.1 | 55 | 21 | 20 | 21 | 61 | 9 | 5 |
| Daniel Bard | NYY | cl | 36 | 3.55 | 4 | 4 | 2 | 44 | 0 | 0 | 0 | 76.0 | 49 | 30 | 30 | 27 | 85 | 4 | 8 |
| Scott Barlow | Bos | mr | 28 | 3.09 | 12 | 0 | 2 | 80 | 0 | 0 | 0 | 87.1 | 79 | 35 | 30 | 26 | 128 | 13 | 5 |
| Jacob Barnes | Was | mr | 31 | 4.05 | 1 | 0 | 0 | 5 | 0 | 0 | 0 | 6.2 | 9 | 3 | 3 | 2 | 10 | 1 | 1 |
| Matt Barnes | Min | cl | 31 | 2.91 | 3 | 1 | 1 | 53 | 0 | 0 | 0 | 77.1 | 48 | 26 | 25 | 31 | 91 | 10 | 12 |
| Jaime Barria | Atl | sp | 24 | 2.26 | 6 | 2 | 0 | 14 | 14 | 1 | 1 | 91.2 | 56 | 24 | 23 | 28 | 70 | 9 | 4 |
| Tyler Bashlor | Phi | mr | 28 | 10.47 | 0 | 0 | 0 | 14 | 0 | 0 | 0 | 16.1 | 27 | 22 | 19 | 9 | 9 | 5 | 4 |
| Anthony Bass | Mil | cl | 33 | 1.29 | 11 | 1 | 5 | 66 | 0 | 0 | 0 | 118.1 | 60 | 18 | 17 | 21 | 96 | 9 | 1 |
| Chris Bassitt | Was | sp | 32 | 3.79 | 14 | 5 | 0 | 33 | 33 | 0 | 0 | 199.2 | 189 | 98 | 84 | 55 | 168 | 28 | 13 |
| Trevor Bauer | Det | sp | 30 | 2.23 | 25 | 3 | 0 | 33 | 33 | 4 | 3 | 234.1 | 140 | 60 | 58 | 54 | 326 | 25 | 7 |
| Cam Bedrosian | Ari | mr | 29 | 3.61 | 2 | 5 | 13 | 36 | 0 | 0 | 0 | 47.1 | 35 | 21 | 19 | 19 | 38 | 3 | 4 |
| Jalen Beeks* | Bos | mr | 27 | 3.15 | 1 | 1 | 2 | 33 | 0 | 0 | 0 | 68.2 | 83 | 24 | 24 | 13 | 86 | 2 | 10 |
| Wes Benjamin* | Mia | mr | 27 | 4.06 | 3 | 3 | 0 | 8 | 7 | 0 | 0 | 44.1 | 39 | 20 | 20 | 19 | 33 | 2 | 1 |
| Travis Bergen* | Mia | mr | 27 | 9.00 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1.0 | 0 | 1 | 1 | 1 | 0 | 0 | 0 |
| Jose Berrios | Cin | sp | 27 | 6.40 | 10 | 12 | 0 | 36 | 36 | 0 | 0 | 188.1 | 200 | 139 | 134 | 89 | 221 | 38 | 12 |
| Dellin Betances | Oak | mr | 33 | 2.57 | 0 | 0 | 0 | 8 | 0 | 0 | 0 | 7.0 | 8 | 2 | 2 | 6 | 12 | 0 | 1 |
| Joe Biagini | Tor | mr | 31 | 13.03 | 0 | 1 | 0 | 10 | 0 | 0 | 0 | 9.2 | 19 | 15 | 14 | 10 | 6 | 1 | 1 |
| Shane Bieber | Col | sp | 26 | 2.67 | 22 | 4 | 0 | 31 | 30 | 2 | 2 | 192.1 | 131 | 63 | 57 | 61 | 316 | 25 | 14 |
| Brandon Bielak | Cle | sp | 25 | 9.85 | 1 | 12 | 0 | 26 | 18 | 0 | 0 | 88.2 | 124 | 105 | 97 | 55 | 70 | 32 | 9 |
| Ray Black | ChW | mr | 31 | 3.72 | 0 | 0 | 0 | 10 | 0 | 0 | 0 | 9.2 | 9 | 4 | 4 | 5 | 8 | 0 | 0 |
| Richard Bleier* | TB | mr | 34 | 2.26 | 4 | 0 | 1 | 43 | 0 | 0 | 0 | 55.2 | 40 | 17 | 14 | 14 | 29 | 1 | 10 |
| Scott Blewett | Tex | mr | 25 | 7.64 | 0 | 0 | 0 | 9 | 0 | 0 | 0 | 17.2 | 22 | 16 | 15 | 11 | 14 | 3 | 3 |
| Ryan Borucki* | Min | mr | 27 | 2.29 | 0 | 2 | 1 | 34 | 0 | 0 | 0 | 39.1 | 27 | 10 | 10 | 27 | 48 | 0 | 3 |
| Brad Boxberger | Tex | mr | 33 | 5.92 | 4 | 1 | 0 | 68 | 0 | 0 | 0 | 79.0 | 86 | 57 | 52 | 42 | 76 | 21 | 17 |
| Matthew Boyd* | LAA | sp | 30 | 7.27 | 3 | 9 | 0 | 22 | 22 | 0 | 0 | 99.0 | 124 | 90 | 80 | 46 | 87 | 30 | 5 |
| Brad Brach | Phi | mr | 35 | 4.14 | 4 | 1 | 0 | 39 | 0 | 0 | 0 | 50.0 | 34 | 25 | 23 | 38 | 56 | 3 | 5 |
| Archie Bradley | Was | cl | 28 | 5.01 | 3 | 2 | 0 | 36 | 0 | 0 | 0 | 46.2 | 61 | 27 | 26 | 12 | 46 | 5 | 3 |
| Ryan Brasier | StL | mr | 33 | 5.12 | 0 | 4 | 1 | 48 | 0 | 0 | 0 | 58.0 | 60 | 34 | 33 | 31 | 71 | 8 | 1 |
| Steven Brault* | Mil | sp | 29 | 3.76 | 12 | 3 | 0 | 30 | 30 | 0 | 0 | 139.0 | 118 | 63 | 58 | 74 | 142 | 3 | 21 |
| Ben Braymer* | ChW | mr | 27 | 4.38 | 1 | 2 | 0 | 6 | 4 | 0 | 0 | 24.2 | 28 | 12 | 12 | 13 | 24 | 1 | 2 |
| Colten Brewer | Tor | mr | 28 | 6.85 | 5 | 10 | 0 | 22 | 22 | 0 | 0 | 93.1 | 101 | 73 | 71 | 44 | 78 | 21 | 2 |
| Austin Brice | SF | mr | 29 | 6.64 | 3 | 1 | 0 | 29 | 3 | 0 | 0 | 39.1 | 37 | 30 | 29 | 26 | 46 | 7 | 0 |
| Zack Britton* | Oak | cl | 33 | 2.61 | 2 | 3 | 25 | 55 | 0 | 0 | 0 | 58.2 | 27 | 20 | 17 | 32 | 40 | 1 | 2 |
| Connor Brogdon | Pit | mr | 26 | 3.41 | 0 | 5 | 13 | 24 | 0 | 0 | 0 | 31.2 | 23 | 13 | 12 | 5 | 37 | 8 | 2 |
| JT Brubaker | Mia | sp | 27 | 3.76 | 9 | 4 | 0 | 18 | 18 | 0 | 0 | 105.1 | 92 | 45 | 44 | 38 | 111 | 17 | 7 |
| Kris Bubic* | Atl | sp | 23 | 3.49 | 12 | 9 | 0 | 30 | 29 | 0 | 0 | 170.1 | 179 | 72 | 66 | 67 | 165 | 22 | 19 |
| Walker Buehler | Was | sp | 26 | 2.38 | 17 | 4 | 0 | 25 | 25 | 3 | 1 | 162.2 | 95 | 45 | 43 | 47 | 184 | 26 | 9 |
| Madison Bumgarner* | LAA | sp | 31 | 5.64 | 3 | 6 | 0 | 20 | 20 | 0 | 0 | 68.2 | 79 | 43 | 43 | 13 | 42 | 19 | 5 |
| Aaron Bummer* | ChC | mr | 27 | 2.64 | 2 | 2 | 11 | 27 | 0 | 0 | 0 | 30.2 | 26 | 9 | 9 | 17 | 42 | 1 | 1 |
| Dylan Bundy | NYY | sp | 28 | 2.20 | 16 | 7 | 0 | 33 | 33 | 2 | 2 | 225.0 | 168 | 61 | 55 | 57 | 273 | 19 | 8 |
| Corbin Burnes | NYY | sp | 26 | 1.74 | 18 | 4 | 0 | 29 | 29 | 0 | 0 | 186.1 | 98 | 38 | 36 | 71 | 286 | 4 | 10 |
| Ty Buttrey | NYM | mr | 28 | 3.71 | 4 | 9 | 7 | 69 | 0 | 0 | 0 | 99.1 | 93 | 45 | 41 | 25 | 84 | 8 | 2 |
| Genesis Cabrera* | Oak | mr | 24 | 3.47 | 5 | 6 | 0 | 56 | 0 | 0 | 0 | 59.2 | 34 | 30 | 23 | 44 | 85 | 7 | 7 |
| Trevor Cahill | Bal | sp | 33 | 3.09 | 6 | 3 | 0 | 20 | 20 | 0 | 0 | 93.1 | 52 | 35 | 32 | 56 | 126 | 14 | 0 |
| Griffin Canning | TB | sp | 25 | 5.38 | 4 | 20 | 0 | 33 | 33 | 0 | 0 | 169.0 | 185 | 114 | 101 | 82 | 181 | 24 | 21 |
| Carlos Carrasco | StL | sp | 34 | 4.44 | 11 | 12 | 0 | 32 | 32 | 0 | 0 | 188.1 | 173 | 101 | 93 | 68 | 241 | 27 | 24 |
| Daniel Castano* | Cle | sp | 26 | 6.41 | 2 | 8 | 0 | 18 | 18 | 0 | 0 | 98.1 | 126 | 79 | 70 | 44 | 40 | 14 | 6 |
| Ryan Castellani | Atl | sp | 25 | 4.78 | 7 | 13 | 0 | 29 | 29 | 0 | 0 | 152.2 | 130 | 83 | 81 | 80 | 99 | 32 | 12 |
| Humberto Castellanos | Pit | mr | 23 | 15.58 | 0 | 0 | 0 | 6 | 0 | 0 | 0 | 8.2 | 18 | 15 | 15 | 10 | 11 | 4 | 1 |
| Diego Castillo | Cin | mr | 27 | 2.61 | 4 | 4 | 5 | 67 | 0 | 0 | 0 | 89.2 | 43 | 28 | 26 | 49 | 91 | 6 | 2 |
| Luis Castillo | Phi | sp | 28 | 4.00 | 11 | 15 | 0 | 33 | 33 | 2 | 2 | 211.1 | 191 | 103 | 94 | 66 | 286 | 22 | 13 |
| Miguel Castro | Sea | mr | 26 | 3.69 | 1 | 2 | 3 | 43 | 0 | 0 | 0 | 53.2 | 58 | 24 | 22 | 22 | 65 | 4 | 12 |
| Dylan Cease | SD | sp | 25 | 5.10 | 6 | 5 | 0 | 15 | 15 | 0 | 0 | 83.0 | 66 | 51 | 47 | 37 | 61 | 18 | 12 |
| Blake Cederlind | Oak | mr | 25 | 8.44 | 0 | 0 | 0 | 7 | 0 | 0 | 0 | 5.1 | 9 | 5 | 5 | 3 | 3 | 1 | 1 |
| Luis Cessa | SD | mr | 29 | 6.17 | 2 | 5 | 3 | 35 | 0 | 0 | 0 | 58.1 | 74 | 46 | 40 | 16 | 53 | 10 | 2 |
| Andrew Chafin* | Phi | mr | 31 | 7.44 | 1 | 1 | 1 | 28 | 0 | 0 | 0 | 32.2 | 42 | 27 | 27 | 15 | 27 | 11 | 5 |
| Aroldis Chapman* | Tor | mr | 33 | 5.25 | 4 | 5 | 16 | 35 | 0 | 0 | 0 | 36.0 | 36 | 21 | 21 | 8 | 60 | 9 | 1 |
| Tyler Chatwood | SF | sp | 31 | 7.35 | 1 | 9 | 0 | 17 | 17 | 0 | 0 | 71.0 | 95 | 59 | 58 | 45 | 101 | 6 | 2 |
| Jesse Chavez | Ari | mr | 37 | 6.78 | 4 | 3 | 3 | 53 | 0 | 0 | 0 | 74.1 | 96 | 63 | 56 | 39 | 70 | 23 | 8 |
| Yonny Chirinos | Det | sp | 27 | 3.44 | 3 | 1 | 0 | 5 | 5 | 0 | 0 | 18.1 | 23 | 7 | 7 | 9 | 18 | 1 | 4 |
| Adam Cimber | Tex | mr | 30 | 4.89 | 3 | 1 | 1 | 45 | 0 | 0 | 0 | 53.1 | 67 | 36 | 29 | 22 | 33 | 6 | 3 |
| Steve Cishek | Cin | mr | 35 | 7.23 | 0 | 0 | 0 | 21 | 0 | 0 | 0 | 23.2 | 29 | 19 | 19 | 16 | 29 | 4 | 2 |
| Jose Cisnero | LAA | mr | 32 | 2.32 | 10 | 2 | 3 | 82 | 0 | 0 | 0 | 89.1 | 68 | 24 | 23 | 33 | 102 | 4 | 1 |
| Aaron Civale | Cle | sp | 26 | 6.20 | 5 | 24 | 0 | 33 | 33 | 2 | 1 | 203.1 | 299 | 147 | 140 | 51 | 199 | 33 | 37 |
| Taylor Clarke | Tor | mr | 28 | 4.49 | 8 | 6 | 0 | 22 | 22 | 0 | 0 | 120.1 | 104 | 61 | 60 | 47 | 122 | 21 | 10 |
| Alex Claudio* | Cin | mr | 29 | 3.80 | 1 | 1 | 0 | 17 | 0 | 0 | 0 | 21.1 | 23 | 11 | 9 | 7 | 17 | 4 | 3 |
| Alex Claudio* | Cle | mr | 29 | 1.70 | 2 | 2 | 2 | 37 | 0 | 0 | 0 | 53.0 | 33 | 11 | 10 | 20 | 40 | 4 | 7 |
| Alex Claudio* |   | mr | 29 | 2.30 | 3 | 3 | 2 | 54 | 0 | 0 | 0 | 74.1 | 56 | 22 | 19 | 27 | 57 | 8 | 10 |
| Mike Clevinger | Phi | sp | 30 | 4.14 | 7 | 12 | 0 | 27 | 27 | 0 | 0 | 158.2 | 142 | 80 | 73 | 61 | 172 | 18 | 8 |
| Tyler Clippard | Oak | mr | 36 | 2.81 | 5 | 7 | 9 | 68 | 5 | 0 | 0 | 77.0 | 62 | 25 | 24 | 19 | 85 | 11 | 2 |
| Alex Cobb | Bal | sp | 33 | 3.64 | 17 | 7 | 0 | 30 | 30 | 1 | 0 | 175.1 | 183 | 79 | 71 | 58 | 104 | 23 | 20 |
| Kyle Cody | Det | sp | 26 | 2.09 | 9 | 4 | 0 | 20 | 19 | 0 | 0 | 99.0 | 65 | 26 | 23 | 59 | 90 | 2 | 11 |
| A.J. Cole | Tor | mr | 29 | 4.19 | 3 | 0 | 2 | 39 | 0 | 0 | 0 | 62.1 | 62 | 30 | 29 | 17 | 52 | 8 | 5 |
| Gerrit Cole | Col | sp | 30 | 3.80 | 18 | 6 | 0 | 31 | 31 | 0 | 0 | 196.1 | 152 | 86 | 83 | 49 | 268 | 47 | 4 |
| Alex Colome | Min | cl | 32 | 2.57 | 5 | 3 | 36 | 60 | 0 | 0 | 0 | 63.0 | 41 | 18 | 18 | 34 | 50 | 0 | 3 |
| Sam Coonrod | SF | mr | 28 | 5.98 | 3 | 1 | 0 | 41 | 0 | 0 | 0 | 61.2 | 70 | 48 | 41 | 32 | 70 | 12 | 5 |
| Patrick Corbin* | Atl | sp | 31 | 5.41 | 9 | 17 | 0 | 33 | 33 | 2 | 1 | 186.1 | 249 | 122 | 112 | 56 | 158 | 34 | 20 |
| Jimmy Cordero | Phi | mr | 29 | 7.53 | 1 | 10 | 6 | 33 | 0 | 0 | 0 | 34.2 | 52 | 29 | 29 | 14 | 14 | 2 | 6 |
| Dylan Covey | Min | mr | 29 | 3.83 | 1 | 2 | 1 | 22 | 0 | 0 | 0 | 51.2 | 57 | 25 | 22 | 15 | 43 | 9 | 9 |
| Stefan Crichton | Mil | mr | 29 | 1.74 | 5 | 1 | 7 | 65 | 0 | 0 | 0 | 98.0 | 64 | 23 | 19 | 18 | 86 | 4 | 23 |
| Kyle Crick | Bal | mr | 28 | 6.75 | 0 | 0 | 1 | 2 | 0 | 0 | 0 | 1.1 | 3 | 1 | 1 | 0 | 0 | 0 | 0 |
| Garrett Crochet* | StL | mr | 22 | 0.00 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 2.2 | 1 | 0 | 0 | 1 | 1 | 0 | 0 |
| Wil Crowe | Tex | sp | 26 | 16.97 | 0 | 4 | 0 | 4 | 4 | 0 | 0 | 11.2 | 33 | 28 | 22 | 13 | 8 | 8 | 2 |
| Johnny Cueto | Oak | sp | 35 | 3.78 | 17 | 8 | 0 | 33 | 33 | 1 | 1 | 195.1 | 163 | 86 | 82 | 86 | 180 | 21 | 16 |
| John Curtiss | Bal | mr | 28 | 2.79 | 4 | 1 | 2 | 50 | 3 | 0 | 0 | 90.1 | 83 | 28 | 28 | 22 | 90 | 11 | 5 |
| Yu Darvish | LAA | sp | 34 | 2.73 | 21 | 6 | 0 | 33 | 33 | 5 | 4 | 234.1 | 183 | 79 | 71 | 52 | 312 | 17 | 24 |
| Zach Davies | Pit | sp | 28 | 4.23 | 10 | 18 | 0 | 33 | 33 | 5 | 1 | 215.0 | 206 | 114 | 101 | 66 | 210 | 30 | 18 |
| Wade Davis | Col | cl | 35 | 15.43 | 1 | 0 | 0 | 9 | 0 | 0 | 0 | 11.2 | 23 | 20 | 20 | 3 | 7 | 6 | 0 |
| Grant Dayton* | Atl | mr | 33 | 4.39 | 5 | 2 | 3 | 50 | 0 | 0 | 0 | 94.1 | 69 | 47 | 46 | 41 | 93 | 16 | 2 |
| Chase De Jong | Col | sp | 27 | 9.30 | 0 | 3 | 0 | 6 | 6 | 0 | 0 | 20.1 | 35 | 22 | 21 | 15 | 23 | 5 | 1 |
| Jacob deGrom | LAD | sp | 33 | 2.90 | 17 | 12 | 0 | 34 | 34 | 1 | 0 | 226.1 | 139 | 77 | 73 | 72 | 342 | 23 | 4 |
| Anthony DeSclafani | Min | sp | 31 | 5.65 | 2 | 0 | 2 | 36 | 0 | 0 | 0 | 63.2 | 62 | 41 | 40 | 38 | 57 | 7 | 6 |
| Ross Detwiler* | NYM | mr | 35 | 3.98 | 1 | 6 | 4 | 42 | 0 | 0 | 0 | 54.1 | 62 | 27 | 24 | 18 | 46 | 3 | 5 |
| Chris Devenski | KC | mr | 30 | 4.91 | 0 | 0 | 0 | 6 | 0 | 0 | 0 | 7.1 | 10 | 5 | 4 | 6 | 9 | 0 | 0 |
| Edwin Diaz | NYY | mr | 27 | 4.22 | 4 | 9 | 3 | 53 | 0 | 0 | 0 | 59.2 | 45 | 30 | 28 | 30 | 104 | 12 | 2 |
| Jairo Diaz | LAD | mr | 30 | 9.82 | 0 | 0 | 0 | 15 | 0 | 0 | 0 | 22.0 | 34 | 24 | 24 | 14 | 17 | 4 | 3 |
| Jake Diekman* | Sea | mr | 34 | 1.34 | 2 | 3 | 27 | 56 | 0 | 0 | 0 | 60.1 | 28 | 9 | 9 | 34 | 84 | 1 | 2 |
| Randy Dobnak | Oak | sp | 26 | 3.61 | 9 | 7 | 0 | 24 | 24 | 0 | 0 | 139.2 | 134 | 61 | 56 | 32 | 86 | 10 | 18 |
| Rafael Dolis | LAA | mr | 33 | 1.29 | 3 | 3 | 36 | 66 | 0 | 0 | 0 | 76.2 | 33 | 11 | 11 | 43 | 88 | 1 | 13 |
| Sean Doolittle* | Cle | mr | 34 | 9.00 | 2 | 3 | 0 | 41 | 0 | 0 | 0 | 46.0 | 64 | 49 | 46 | 15 | 28 | 14 | 1 |
| Tommy Doyle | Tor | mr | 25 | 5.68 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | 6.1 | 10 | 4 | 4 | 2 | 6 | 1 | 1 |
| Oliver Drake | LAA | mr | 34 | 1.82 | 2 | 2 | 1 | 33 | 0 | 0 | 0 | 39.2 | 27 | 11 | 8 | 17 | 34 | 4 | 3 |
| Tyler Duffey | TB | mr | 30 | 2.41 | 1 | 4 | 18 | 52 | 0 | 0 | 0 | 67.1 | 43 | 24 | 18 | 24 | 99 | 5 | 1 |
| Danny Duffy* | NYY | sp | 32 | 3.10 | 13 | 10 | 0 | 32 | 32 | 1 | 1 | 191.2 | 149 | 73 | 66 | 68 | 189 | 23 | 8 |
| Robert Dugger | KC | mr | 25 | 16.20 | 0 | 1 | 0 | 4 | 1 | 0 | 0 | 11.2 | 27 | 22 | 21 | 4 | 7 | 3 | 0 |
| Justin Dunn | Hou | sp | 25 | 3.85 | 7 | 9 | 0 | 30 | 30 | 0 | 0 | 156.2 | 110 | 77 | 67 | 90 | 139 | 32 | 8 |
| Dane Dunning | NYM | sp | 26 | 3.01 | 8 | 9 | 0 | 22 | 22 | 0 | 0 | 131.2 | 91 | 44 | 44 | 62 | 134 | 9 | 2 |
| Carl Edwards | Bal | mr | 29 | 1.93 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 4.2 | 4 | 3 | 1 | 2 | 3 | 0 | 0 |
| Zach Eflin | Mia | sp | 27 | 4.10 | 13 | 9 | 0 | 30 | 30 | 0 | 0 | 177.2 | 146 | 82 | 81 | 53 | 240 | 28 | 16 |
| Seth Elledge | Tex | mr | 25 | 8.82 | 0 | 4 | 0 | 33 | 0 | 0 | 0 | 32.2 | 54 | 36 | 32 | 37 | 41 | 4 | 3 |
| Nathan Eovaldi | ChW | sp | 31 | 5.61 | 9 | 7 | 0 | 27 | 27 | 0 | 0 | 138.0 | 172 | 92 | 86 | 24 | 150 | 27 | 19 |
| Robbie Erlin* | NYM | sp | 30 | 6.62 | 5 | 9 | 0 | 21 | 20 | 0 | 0 | 100.2 | 116 | 78 | 74 | 27 | 86 | 29 | 6 |
| Thomas Eshelman | Tex | mr | 27 | 6.99 | 2 | 6 | 0 | 12 | 12 | 0 | 0 | 56.2 | 67 | 46 | 44 | 30 | 32 | 12 | 7 |
| Carlos Estevez | Phi | mr | 28 | 6.75 | 1 | 2 | 1 | 36 | 0 | 0 | 0 | 52.0 | 72 | 39 | 39 | 22 | 61 | 12 | 5 |
| Pete Fairbanks | Det | mr | 27 | 2.54 | 3 | 1 | 5 | 65 | 2 | 0 | 0 | 71.0 | 57 | 23 | 20 | 47 | 99 | 4 | 8 |
| Jeurys Familia | Was | mr | 31 | 3.68 | 3 | 0 | 0 | 10 | 0 | 0 | 0 | 14.2 | 13 | 9 | 6 | 4 | 12 | 2 | 1 |
| Buck Farmer | Min | mr | 30 | 3.52 | 4 | 4 | 3 | 44 | 0 | 0 | 0 | 69.0 | 64 | 31 | 27 | 18 | 61 | 6 | 7 |
| Erick Fedde | Sea | sp | 28 | 3.77 | 10 | 5 | 0 | 35 | 22 | 0 | 0 | 143.1 | 97 | 65 | 60 | 64 | 84 | 23 | 8 |
| Caleb Ferguson* | Was | mr | 24 | 3.83 | 0 | 4 | 1 | 26 | 4 | 0 | 0 | 42.1 | 40 | 21 | 18 | 6 | 44 | 9 | 9 |
| J.P. Feyereisen | LAA | mr | 28 | 4.62 | 3 | 2 | 0 | 20 | 0 | 0 | 0 | 39.0 | 26 | 21 | 20 | 18 | 32 | 8 | 5 |
| Mike Fiers | SD | sp | 36 | 5.66 | 13 | 12 | 0 | 32 | 32 | 0 | 0 | 178.0 | 216 | 117 | 112 | 56 | 115 | 29 | 14 |
| Kyle Finnegan | Col | mr | 29 | 3.56 | 11 | 2 | 7 | 78 | 0 | 0 | 0 | 96.0 | 73 | 43 | 38 | 48 | 102 | 7 | 11 |
| Jack Flaherty | Det | sp | 25 | 3.02 | 18 | 6 | 0 | 28 | 28 | 1 | 0 | 164.0 | 136 | 60 | 55 | 72 | 194 | 16 | 14 |
| Josh Fleming* | Mia | sp | 25 | 2.92 | 9 | 2 | 0 | 16 | 16 | 0 | 0 | 98.2 | 95 | 35 | 32 | 25 | 68 | 10 | 18 |
| Dylan Floro | Min | mr | 30 | 3.25 | 6 | 6 | 3 | 54 | 0 | 0 | 0 | 80.1 | 86 | 32 | 29 | 15 | 82 | 6 | 7 |
| Wilmer Font | Ari | mr | 31 | 10.11 | 2 | 4 | 0 | 48 | 0 | 0 | 0 | 67.2 | 101 | 78 | 76 | 54 | 66 | 9 | 3 |
| Matt Foster | Was | mr | 26 | 2.82 | 10 | 0 | 2 | 47 | 6 | 0 | 0 | 67.0 | 43 | 21 | 21 | 25 | 76 | 5 | 2 |
| Kyle Freeland* | ChW | sp | 28 | 3.29 | 13 | 12 | 0 | 36 | 36 | 1 | 0 | 218.2 | 210 | 90 | 80 | 76 | 149 | 20 | 38 |
| Sam Freeman* | Sea | mr | 34 | 2.25 | 0 | 0 | 0 | 10 | 0 | 0 | 0 | 12.0 | 9 | 3 | 3 | 6 | 9 | 1 | 0 |
| Max Fried* | Oak | sp | 27 | 3.33 | 15 | 10 | 0 | 33 | 33 | 0 | 0 | 194.2 | 143 | 83 | 72 | 69 | 207 | 12 | 13 |
| Jace Fry* | Cle | mr | 27 | 4.84 | 2 | 9 | 4 | 52 | 0 | 0 | 0 | 67.0 | 61 | 37 | 36 | 29 | 79 | 20 | 10 |
| Paul Fry* | Oak | mr | 28 | 0.79 | 1 | 0 | 1 | 21 | 0 | 0 | 0 | 22.2 | 5 | 2 | 2 | 7 | 29 | 0 | 2 |
| Carson Fulmer | SD | mr | 27 | 3.75 | 1 | 0 | 0 | 7 | 0 | 0 | 0 | 12.0 | 11 | 5 | 5 | 4 | 10 | 1 | 0 |
| Michael Fulmer | Tex | sp | 28 | 10.56 | 2 | 21 | 0 | 28 | 28 | 0 | 0 | 105.2 | 202 | 130 | 124 | 36 | 70 | 33 | 24 |
| Giovanny Gallegos | Hou | mr | 29 | 1.29 | 4 | 2 | 5 | 41 | 0 | 0 | 0 | 56.0 | 30 | 15 | 8 | 20 | 79 | 9 | 6 |
| Zac Gallen | Ari | sp | 25 | 3.26 | 12 | 13 | 0 | 34 | 33 | 2 | 0 | 226.2 | 201 | 94 | 82 | 101 | 270 | 34 | 36 |
| John Gant | ChC | mr | 28 | 2.81 | 5 | 3 | 5 | 55 | 0 | 0 | 0 | 77.0 | 49 | 24 | 24 | 45 | 97 | 3 | 4 |
| Bryan Garcia | Atl | mr | 26 | 1.50 | 1 | 0 | 0 | 7 | 0 | 0 | 0 | 12.0 | 10 | 3 | 2 | 4 | 7 | 0 | 1 |
| Deivi Garcia | Mia | sp | 22 | 2.25 | 1 | 1 | 0 | 4 | 4 | 0 | 0 | 28.0 | 18 | 7 | 7 | 1 | 24 | 3 | 1 |
| Edgar Garcia | Phi | mr | 24 | 3.38 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 2.2 | 0 | 1 | 1 | 1 | 1 | 0 | 0 |
| Jarlin Garcia* | LAA | mr | 28 | 1.81 | 3 | 2 | 2 | 55 | 0 | 0 | 0 | 69.2 | 49 | 17 | 14 | 24 | 63 | 3 | 5 |
| Luis Garcia | KC | mr | 34 | 12.87 | 0 | 4 | 0 | 23 | 0 | 0 | 0 | 35.2 | 71 | 56 | 51 | 35 | 43 | 12 | 1 |
| Luis Garcia | Pit | mr | 24 | 4.71 | 2 | 4 | 0 | 9 | 4 | 0 | 0 | 28.2 | 30 | 21 | 15 | 11 | 15 | 4 | 0 |
| Rico Garcia | LAD | mr | 27 | 10.95 | 2 | 0 | 1 | 9 | 0 | 0 | 0 | 12.1 | 23 | 16 | 15 | 5 | 6 | 3 | 3 |
| Rony Garcia | Col | mr | 23 | 8.44 | 2 | 6 | 0 | 25 | 10 | 0 | 0 | 64.0 | 98 | 68 | 60 | 22 | 40 | 26 | 3 |
| Yimi Garcia | KC | mr | 30 | 4.08 | 4 | 3 | 15 | 30 | 0 | 0 | 0 | 39.2 | 36 | 18 | 18 | 21 | 62 | 2 | 1 |
| Amir Garrett* | Phi | mr | 29 | 2.48 | 3 | 5 | 14 | 47 | 0 | 0 | 0 | 58.0 | 31 | 19 | 16 | 12 | 78 | 11 | 5 |
| Braxton Garrett* | TB | sp | 23 | 15.00 | 0 | 6 | 0 | 6 | 6 | 0 | 0 | 18.0 | 26 | 33 | 30 | 26 | 19 | 8 | 4 |
| Kevin Gausman | SD | sp | 30 | 4.15 | 11 | 10 | 0 | 30 | 30 | 0 | 0 | 182.1 | 149 | 84 | 84 | 63 | 248 | 28 | 7 |
| Sam Gaviglio | Col | mr | 31 | 11.45 | 0 | 0 | 0 | 7 | 0 | 0 | 0 | 11.0 | 17 | 14 | 14 | 13 | 9 | 5 | 1 |
| Joey Gerber | Phi | mr | 24 | 3.70 | 4 | 2 | 1 | 47 | 0 | 0 | 0 | 65.2 | 66 | 28 | 27 | 24 | 23 | 8 | 16 |
| Ian Gibaut | Hou | mr | 27 | 5.40 | 0 | 0 | 0 | 22 | 0 | 0 | 0 | 30.0 | 25 | 22 | 18 | 21 | 34 | 5 | 1 |
| Kyle Gibson | Oak | sp | 33 | 3.78 | 3 | 0 | 0 | 3 | 3 | 0 | 0 | 16.2 | 19 | 7 | 7 | 4 | 18 | 3 | 2 |
| Kevin Ginkel | Mil | mr | 27 | 0.00 | 0 | 0 | 1 | 2 | 0 | 0 | 0 | 2.2 | 1 | 0 | 0 | 4 | 4 | 0 | 0 |
| Lucas Giolito | SD | sp | 26 | 3.39 | 11 | 8 | 0 | 33 | 33 | 1 | 1 | 207.1 | 149 | 85 | 78 | 70 | 286 | 26 | 21 |
| Mychal Givens | SD | mr | 31 | 7.09 | 0 | 1 | 1 | 21 | 0 | 0 | 0 | 33.0 | 36 | 29 | 26 | 29 | 25 | 11 | 7 |
| Tyler Glasnow | Sea | sp | 27 | 3.71 | 15 | 7 | 0 | 33 | 33 | 0 | 0 | 186.2 | 138 | 88 | 77 | 62 | 284 | 30 | 3 |
| Zack Godley | Col | sp | 31 | 9.44 | 3 | 7 | 0 | 22 | 22 | 0 | 0 | 81.0 | 139 | 89 | 85 | 48 | 90 | 30 | 5 |
| Austin Gomber* | LAA | mr | 27 | 2.58 | 5 | 4 | 0 | 23 | 23 | 0 | 0 | 122.0 | 84 | 40 | 35 | 68 | 108 | 3 | 17 |
| Tony Gonsolin | Mil | sp | 27 | 1.86 | 17 | 3 | 0 | 25 | 25 | 0 | 0 | 154.2 | 100 | 38 | 32 | 39 | 169 | 6 | 6 |
| Marco Gonzales* | Was | sp | 29 | 3.15 | 19 | 6 | 0 | 33 | 33 | 7 | 1 | 231.1 | 205 | 83 | 81 | 28 | 193 | 27 | 13 |
| Chi Chi Gonzalez | SF | sp | 29 | 4.76 | 4 | 6 | 0 | 14 | 14 | 0 | 0 | 79.1 | 88 | 44 | 42 | 37 | 75 | 7 | 17 |
| Gio Gonzalez* | NYM | mr | 35 | 8.55 | 3 | 13 | 0 | 23 | 23 | 0 | 0 | 92.2 | 136 | 94 | 88 | 52 | 90 | 24 | 2 |
| Victor Gonzalez* | LAD | mr | 25 | 0.88 | 5 | 1 | 7 | 32 | 0 | 0 | 0 | 61.1 | 37 | 6 | 6 | 6 | 66 | 1 | 1 |
| Nick Goody | Cin | mr | 29 | 13.50 | 1 | 0 | 0 | 4 | 0 | 0 | 0 | 4.0 | 8 | 6 | 6 | 5 | 5 | 1 | 0 |
| Trevor Gott | Tor | cl | 28 | 8.10 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 3.1 | 7 | 3 | 3 | 1 | 3 | 2 | 1 |
| Ashton Goudeau | Hou | mr | 28 | 0.00 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 2.1 | 1 | 0 | 0 | 0 | 3 | 0 | 0 |
| Brusdar Graterol | Col | mr | 22 | 2.78 | 3 | 2 | 19 | 69 | 0 | 0 | 0 | 94.0 | 85 | 32 | 29 | 19 | 53 | 3 | 31 |
| Kendall Graveman | Mia | mr | 30 | 4.79 | 1 | 2 | 0 | 4 | 4 | 0 | 0 | 20.2 | 17 | 13 | 11 | 9 | 16 | 4 | 2 |
| Jon Gray | Hou | sp | 29 | 5.69 | 5 | 16 | 0 | 25 | 25 | 0 | 0 | 136.0 | 169 | 92 | 86 | 43 | 87 | 22 | 11 |
| Sonny Gray | Ari | sp | 31 | 3.94 | 13 | 10 | 0 | 34 | 33 | 0 | 0 | 196.1 | 143 | 88 | 86 | 104 | 276 | 19 | 14 |
| Chad Green | Oak | mr | 30 | 2.41 | 2 | 3 | 3 | 61 | 0 | 0 | 0 | 74.2 | 52 | 20 | 20 | 12 | 94 | 12 | 1 |
| Shane Greene | Was | mr | 32 | 2.47 | 2 | 0 | 0 | 31 | 0 | 0 | 0 | 43.2 | 33 | 13 | 12 | 16 | 36 | 2 | 5 |
| Zack Greinke | ChC | sp | 37 | 4.83 | 18 | 10 | 0 | 37 | 36 | 1 | 1 | 223.2 | 279 | 128 | 120 | 34 | 228 | 22 | 16 |
| Foster Griffin* | ChW | mr | 25 | 0.79 | 0 | 1 | 0 | 6 | 0 | 0 | 0 | 11.1 | 13 | 2 | 1 | 5 | 6 | 0 | 2 |
| Robert Gsellman | Was | sp | 27 | 6.89 | 1 | 3 | 0 | 11 | 11 | 0 | 0 | 47.0 | 69 | 43 | 36 | 28 | 39 | 8 | 6 |
| Junior Guerra | Hou | mr | 36 | 3.29 | 6 | 9 | 2 | 64 | 0 | 0 | 0 | 93.0 | 69 | 34 | 34 | 46 | 91 | 7 | 11 |
| Taylor Guilbeau* | Cin | mr | 28 | 5.40 | 0 | 1 | 1 | 11 | 0 | 0 | 0 | 15.0 | 21 | 11 | 9 | 8 | 9 | 2 | 1 |
| Josh Hader* | SD | cl | 27 | 2.63 | 2 | 5 | 3 | 60 | 0 | 0 | 0 | 89.0 | 36 | 26 | 26 | 53 | 125 | 13 | 2 |
| Jesse Hahn | Bal | mr | 31 | 0.86 | 9 | 1 | 4 | 54 | 0 | 0 | 0 | 83.1 | 30 | 9 | 8 | 35 | 88 | 2 | 3 |
| David Hale | Mia | mr | 33 | 1.72 | 0 | 0 | 2 | 9 | 0 | 0 | 0 | 15.2 | 9 | 6 | 3 | 5 | 11 | 2 | 0 |
| Cole Hamels* | Hou | sp | 37 | 5.21 | 0 | 3 | 0 | 4 | 4 | 0 | 0 | 19.0 | 22 | 13 | 11 | 5 | 7 | 2 | 3 |
| Brad Hand* | Hou | cl | 31 | 2.22 | 3 | 7 | 28 | 53 | 0 | 0 | 0 | 65.0 | 44 | 16 | 16 | 17 | 73 | 0 | 2 |
| J.A. Happ* | ChC | sp | 38 | 2.67 | 17 | 5 | 0 | 28 | 27 | 2 | 0 | 178.2 | 128 | 61 | 53 | 52 | 134 | 27 | 20 |
| Ryne Harper | KC | mr | 32 | 2.03 | 5 | 2 | 1 | 21 | 0 | 0 | 0 | 31.0 | 24 | 12 | 7 | 6 | 31 | 1 | 1 |
| Will Harris | Det | mr | 36 | 0.00 | 0 | 0 | 0 | 10 | 0 | 0 | 0 | 9.1 | 1 | 0 | 0 | 2 | 12 | 0 | 0 |
| Geoff Hartlieb | LAA | mr | 27 | 4.92 | 4 | 1 | 2 | 58 | 0 | 0 | 0 | 67.2 | 54 | 39 | 37 | 62 | 60 | 3 | 12 |
| Hunter Harvey | NYM | mr | 26 | 3.56 | 0 | 0 | 4 | 27 | 0 | 0 | 0 | 48.0 | 46 | 22 | 19 | 19 | 38 | 8 | 7 |
| Matt Harvey | StL | sp | 32 | 14.00 | 1 | 8 | 0 | 14 | 14 | 0 | 0 | 45.0 | 96 | 72 | 70 | 20 | 36 | 25 | 8 |
| Thomas Hatch | NYM | mr | 26 | 2.19 | 4 | 0 | 3 | 59 | 0 | 0 | 0 | 111.0 | 66 | 30 | 27 | 62 | 99 | 9 | 14 |
| Andrew Heaney* | StL | sp | 30 | 3.99 | 14 | 10 | 0 | 33 | 33 | 1 | 1 | 209.2 | 209 | 98 | 93 | 55 | 226 | 35 | 15 |
| Taylor Hearn* | Tex | mr | 26 | 2.45 | 1 | 0 | 0 | 45 | 0 | 0 | 0 | 73.1 | 55 | 20 | 20 | 36 | 92 | 8 | 6 |
| Ben Heller | Hou | mr | 29 | 8.04 | 2 | 0 | 1 | 46 | 0 | 0 | 0 | 59.1 | 70 | 55 | 53 | 26 | 36 | 12 | 2 |
| Ryan Helsley | Pit | mr | 26 | 3.72 | 2 | 1 | 2 | 24 | 0 | 0 | 0 | 36.1 | 19 | 15 | 15 | 15 | 29 | 9 | 2 |
| Heath Hembree | Cle | mr | 32 | 12.65 | 0 | 6 | 1 | 46 | 0 | 0 | 0 | 52.2 | 100 | 75 | 74 | 25 | 52 | 33 | 5 |
| Kyle Hendricks | Was | sp | 31 | 3.03 | 20 | 6 | 0 | 33 | 33 | 4 | 2 | 237.1 | 222 | 87 | 80 | 20 | 218 | 25 | 19 |
| Liam Hendriks | Bal | cl | 32 | 1.07 | 8 | 0 | 33 | 65 | 0 | 0 | 0 | 100.2 | 54 | 15 | 12 | 10 | 154 | 5 | 4 |
| Jimmy Herget | Bal | mr | 27 | 2.92 | 3 | 2 | 2 | 44 | 1 | 0 | 0 | 61.2 | 43 | 21 | 20 | 37 | 59 | 6 | 2 |
| Carlos Hernandez | SF | sp | 24 | 7.99 | 1 | 6 | 0 | 9 | 9 | 0 | 0 | 47.1 | 72 | 47 | 42 | 25 | 55 | 14 | 6 |
| Darwinzon Hernandez* | Atl | mr | 24 | 5.22 | 1 | 2 | 2 | 17 | 0 | 0 | 0 | 29.1 | 36 | 17 | 17 | 16 | 33 | 8 | 4 |
| Elieser Hernandez | Phi | sp | 26 | 3.10 | 5 | 8 | 0 | 21 | 21 | 1 | 0 | 122.0 | 85 | 48 | 42 | 25 | 156 | 18 | 1 |
| Jonathan Hernandez | Tex | mr | 24 | 1.86 | 4 | 1 | 2 | 72 | 0 | 0 | 0 | 121.0 | 80 | 27 | 25 | 20 | 131 | 5 | 17 |
| Codi Heuer | Was | mr | 24 | 1.21 | 6 | 2 | 34 | 56 | 0 | 0 | 0 | 66.2 | 33 | 9 | 9 | 21 | 75 | 1 | 3 |
| Cam Hill | KC | mr | 27 | 3.95 | 1 | 2 | 2 | 29 | 0 | 0 | 0 | 54.2 | 40 | 25 | 24 | 14 | 48 | 12 | 3 |
| Rich Hill* | Hou | sp | 41 | 4.86 | 7 | 15 | 0 | 25 | 25 | 0 | 0 | 140.2 | 132 | 84 | 76 | 69 | 97 | 17 | 10 |
| Tim Hill* | LAD | mr | 31 | 1.52 | 1 | 1 | 1 | 38 | 0 | 0 | 0 | 47.1 | 27 | 10 | 8 | 7 | 57 | 3 | 4 |
| Jeff Hoffman | TB | mr | 28 | 7.89 | 2 | 1 | 1 | 35 | 0 | 0 | 0 | 51.1 | 92 | 51 | 45 | 19 | 49 | 11 | 7 |
| Derek Holland* | Phi | mr | 34 | 5.53 | 0 | 4 | 5 | 43 | 0 | 0 | 0 | 71.2 | 77 | 46 | 44 | 14 | 61 | 25 | 8 |
| Greg Holland | Bal | mr | 35 | 2.30 | 8 | 1 | 6 | 72 | 0 | 0 | 0 | 105.2 | 71 | 30 | 27 | 28 | 121 | 7 | 11 |
| Clay Holmes | Hou | mr | 28 | 0.00 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1.0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 |
| Tanner Houck | Cle | sp | 25 | 5.93 | 1 | 5 | 0 | 9 | 9 | 0 | 0 | 44.0 | 37 | 32 | 29 | 41 | 58 | 8 | 6 |
| Adrian Houser | LAD | sp | 28 | 7.35 | 3 | 11 | 0 | 26 | 26 | 0 | 0 | 120.0 | 168 | 110 | 98 | 64 | 114 | 18 | 17 |
| Sam Howard* | KC | mr | 28 | 5.31 | 1 | 4 | 3 | 37 | 0 | 0 | 0 | 57.2 | 47 | 34 | 34 | 24 | 83 | 11 | 2 |
| Spencer Howard | NYM | sp | 24 | 5.99 | 4 | 9 | 0 | 19 | 19 | 0 | 0 | 91.2 | 106 | 65 | 61 | 51 | 97 | 24 | 3 |
| James Hoyt | ChW | mr | 34 | 1.70 | 8 | 1 | 4 | 66 | 0 | 0 | 0 | 69.0 | 39 | 17 | 13 | 29 | 88 | 4 | 1 |
| Dakota Hudson | Bos | sp | 26 | 3.15 | 10 | 7 | 0 | 25 | 25 | 1 | 0 | 140.0 | 122 | 54 | 49 | 49 | 125 | 17 | 23 |
| Daniel Hudson | SF | cl | 34 | 2.53 | 4 | 2 | 11 | 30 | 0 | 0 | 0 | 32.0 | 13 | 9 | 9 | 19 | 31 | 3 | 2 |
| Jared Hughes | Ari | mr | 35 | 4.63 | 7 | 5 | 3 | 59 | 0 | 0 | 0 | 103.0 | 96 | 54 | 53 | 53 | 81 | 10 | 17 |
| Tommy Hunter | Bal | mr | 34 | 2.19 | 6 | 1 | 2 | 39 | 0 | 0 | 0 | 53.1 | 42 | 14 | 13 | 23 | 54 | 4 | 5 |
| Raisel Iglesias | Was | cl | 31 | 1.71 | 6 | 2 | 2 | 40 | 0 | 0 | 0 | 47.1 | 30 | 9 | 9 | 8 | 67 | 1 | 1 |
| Luke Jackson | Pit | mr | 29 | 6.42 | 2 | 1 | 1 | 48 | 0 | 0 | 0 | 75.2 | 120 | 63 | 54 | 34 | 60 | 11 | 10 |
| Josh James | SD | mr | 28 | 10.57 | 0 | 1 | 2 | 13 | 0 | 0 | 0 | 15.1 | 19 | 21 | 18 | 15 | 18 | 6 | 1 |
| Kenley Jansen | NYY | cl | 33 | 6.05 | 2 | 1 | 2 | 29 | 0 | 0 | 0 | 38.2 | 43 | 26 | 26 | 22 | 52 | 3 | 1 |
| Cristian Javier | Bos | sp | 24 | 3.17 | 17 | 4 | 2 | 33 | 30 | 1 | 1 | 161.2 | 106 | 58 | 57 | 74 | 167 | 34 | 8 |
| Jeremy Jeffress | Mil | cl | 33 | 0.95 | 5 | 1 | 25 | 56 | 0 | 0 | 0 | 75.2 | 36 | 8 | 8 | 29 | 73 | 2 | 13 |
| Joe Jimenez | StL | mr | 26 | 7.36 | 0 | 0 | 0 | 44 | 0 | 0 | 0 | 73.1 | 82 | 60 | 60 | 17 | 83 | 29 | 8 |
| Pierce Johnson | KC | mr | 30 | 2.25 | 5 | 4 | 4 | 37 | 0 | 0 | 0 | 60.0 | 36 | 16 | 15 | 34 | 86 | 1 | 4 |
| Nate Jones | NYM | mr | 35 | 4.31 | 1 | 3 | 1 | 36 | 0 | 0 | 0 | 48.0 | 61 | 29 | 23 | 16 | 60 | 8 | 1 |
| Jakob Junis | SF | sp | 28 | 8.50 | 4 | 12 | 0 | 24 | 19 | 0 | 0 | 101.2 | 134 | 100 | 96 | 37 | 80 | 29 | 7 |
| Rob Kaminsky* | Bos | mr | 26 | 4.82 | 0 | 1 | 0 | 11 | 0 | 0 | 0 | 9.1 | 6 | 5 | 5 | 7 | 3 | 1 | 1 |
| James Kaprielian | Ari | mr | 27 | 17.18 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 3.2 | 14 | 13 | 7 | 2 | 1 | 4 | 0 |
| James Karinchak | SD | mr | 25 | 2.05 | 6 | 4 | 5 | 64 | 0 | 0 | 0 | 92.0 | 64 | 23 | 21 | 62 | 175 | 2 | 8 |
| Anthony Kay* | Det | mr | 26 | 4.60 | 1 | 1 | 0 | 14 | 0 | 0 | 0 | 29.1 | 26 | 16 | 15 | 13 | 39 | 4 | 1 |
| Brad Keller | Cle | sp | 25 | 2.40 | 8 | 6 | 0 | 18 | 18 | 3 | 1 | 127.2 | 103 | 37 | 34 | 37 | 94 | 4 | 15 |
| Brad Keller | Sea | sp | 25 | 0.84 | 8 | 0 | 0 | 9 | 9 | 2 | 2 | 64.0 | 38 | 9 | 6 | 14 | 47 | 1 | 9 |
| Brad Keller |   | sp | 25 | 1.88 | 16 | 6 | 0 | 27 | 27 | 5 | 3 | 191.2 | 141 | 46 | 40 | 51 | 141 | 5 | 24 |
| Mitch Keller | ChW | sp | 25 | 3.16 | 6 | 5 | 0 | 17 | 17 | 0 | 0 | 82.2 | 35 | 30 | 29 | 73 | 82 | 8 | 10 |
| Joe Kelly | ChC | mr | 33 | 9.12 | 1 | 1 | 0 | 16 | 5 | 0 | 0 | 25.2 | 34 | 28 | 26 | 34 | 16 | 0 | 5 |
| Merrill Kelly | Was | sp | 32 | 3.12 | 10 | 1 | 0 | 17 | 17 | 1 | 0 | 118.1 | 106 | 43 | 41 | 15 | 126 | 18 | 12 |
| Ian Kennedy | Min | mr | 36 | 9.95 | 1 | 0 | 0 | 12 | 0 | 0 | 0 | 19.0 | 30 | 21 | 21 | 3 | 20 | 9 | 2 |
| Clayton Kershaw* | Mil | sp | 33 | 2.78 | 18 | 5 | 0 | 30 | 30 | 1 | 1 | 191.1 | 136 | 63 | 59 | 31 | 211 | 25 | 11 |
| Dallas Keuchel* | ChC | sp | 33 | 3.67 | 17 | 8 | 0 | 33 | 33 | 5 | 1 | 216.0 | 214 | 103 | 88 | 70 | 131 | 12 | 21 |
| Mike Kickham* | Hou | mr | 32 | 8.64 | 0 | 1 | 0 | 3 | 2 | 0 | 0 | 8.1 | 8 | 8 | 8 | 1 | 13 | 4 | 0 |
| Yusei Kikuchi* | Cin | sp | 30 | 5.03 | 8 | 9 | 0 | 22 | 22 | 1 | 1 | 121.2 | 129 | 72 | 68 | 49 | 98 | 16 | 23 |
| Franklyn Kilome | SD | mr | 26 | 9.20 | 1 | 2 | 0 | 8 | 0 | 0 | 0 | 14.2 | 14 | 15 | 15 | 8 | 24 | 8 | 0 |
| Kwang Hyun Kim* | Bos | sp | 32 | 3.00 | 10 | 7 | 0 | 25 | 23 | 3 | 1 | 156.0 | 129 | 53 | 52 | 45 | 100 | 12 | 31 |
| Craig Kimbrel | NYM | mr | 33 | 4.84 | 5 | 2 | 0 | 41 | 0 | 0 | 0 | 57.2 | 32 | 31 | 31 | 46 | 105 | 7 | 1 |
| John King* | NYM | mr | 26 | 5.74 | 1 | 0 | 0 | 14 | 0 | 0 | 0 | 26.2 | 31 | 17 | 17 | 11 | 20 | 4 | 0 |
| Michael King | ChC | mr | 26 | 6.95 | 6 | 7 | 0 | 16 | 15 | 0 | 0 | 77.2 | 97 | 66 | 60 | 34 | 76 | 20 | 6 |
| Tyler Kinley | Col | mr | 30 | 1.94 | 4 | 2 | 2 | 62 | 0 | 0 | 0 | 78.2 | 43 | 21 | 17 | 49 | 99 | 5 | 7 |
| Brandon Kintzler | Tor | cl | 36 | 3.77 | 6 | 8 | 4 | 66 | 0 | 0 | 0 | 114.2 | 90 | 52 | 48 | 41 | 57 | 14 | 38 |
| Andrew Kittredge | Det | mr | 31 | 4.36 | 0 | 1 | 0 | 25 | 3 | 0 | 0 | 33.0 | 35 | 17 | 16 | 14 | 19 | 3 | 6 |
| Branden Kline | Cin | mr | 29 | 8.10 | 0 | 0 | 2 | 7 | 0 | 0 | 0 | 10.0 | 17 | 9 | 9 | 5 | 4 | 3 | 2 |
| Corey Kluber | Mia | sp | 35 | 1.42 | 1 | 0 | 0 | 2 | 2 | 0 | 0 | 12.2 | 9 | 2 | 2 | 5 | 13 | 1 | 1 |
| Adam Kolarek* | Bos | mr | 32 | 2.07 | 6 | 2 | 3 | 59 | 0 | 0 | 0 | 69.2 | 47 | 16 | 16 | 12 | 55 | 2 | 4 |
| Dean Kremer | Min | sp | 25 | 4.56 | 2 | 7 | 0 | 14 | 14 | 0 | 0 | 71.0 | 60 | 40 | 36 | 49 | 82 | 1 | 5 |
| Chad Kuhl | Oak | sp | 28 | 5.14 | 4 | 6 | 3 | 55 | 4 | 0 | 0 | 117.1 | 104 | 73 | 67 | 81 | 107 | 19 | 10 |
| Brady Lail | Cin | mr | 27 | 3.32 | 3 | 1 | 3 | 19 | 0 | 0 | 0 | 43.1 | 27 | 17 | 16 | 12 | 32 | 11 | 3 |
| Travis Lakins | Tex | mr | 27 | 5.87 | 2 | 2 | 5 | 51 | 0 | 0 | 0 | 61.1 | 57 | 47 | 40 | 40 | 59 | 9 | 1 |
| Jimmy Lambert | TB | mr | 26 | 9.00 | 0 | 2 | 0 | 8 | 0 | 0 | 0 | 10.0 | 18 | 12 | 10 | 10 | 4 | 1 | 3 |
| Dinelson Lamet | KC | sp | 28 | 2.36 | 5 | 12 | 0 | 32 | 32 | 0 | 0 | 191.0 | 119 | 54 | 50 | 42 | 292 | 18 | 4 |
| Wade LeBlanc* | Atl | sp | 36 | 5.36 | 2 | 5 | 0 | 8 | 8 | 0 | 0 | 40.1 | 42 | 25 | 24 | 14 | 21 | 8 | 3 |
| Jose Leclerc | Pit | cl | 27 | 23.14 | 0 | 4 | 0 | 5 | 0 | 0 | 0 | 2.1 | 10 | 8 | 6 | 4 | 1 | 1 | 1 |
| Brandon Leibrandt* | Min | mr | 28 | 2.29 | 3 | 0 | 0 | 15 | 0 | 0 | 0 | 35.1 | 26 | 16 | 9 | 30 | 9 | 3 | 6 |
| Jon Lester* | Det | sp | 37 | 3.42 | 16 | 9 | 0 | 33 | 33 | 2 | 0 | 192.0 | 175 | 88 | 73 | 57 | 147 | 29 | 6 |
| Josh Lindblom | KC | sp | 34 | 6.15 | 6 | 13 | 0 | 24 | 24 | 3 | 0 | 136.0 | 138 | 96 | 93 | 68 | 152 | 16 | 8 |
| Jonathan Loaisiga | Tor | mr | 26 | 0.75 | 0 | 1 | 9 | 14 | 0 | 0 | 0 | 24.0 | 16 | 2 | 2 | 2 | 28 | 2 | 3 |
| Walker Lockett | Cle | mr | 27 | 7.69 | 1 | 3 | 0 | 23 | 1 | 0 | 0 | 48.0 | 80 | 42 | 41 | 21 | 45 | 10 | 6 |
| Jorge Lopez | Bal | sp | 28 | 4.24 | 4 | 2 | 0 | 13 | 12 | 0 | 0 | 68.0 | 68 | 37 | 32 | 18 | 42 | 10 | 10 |
| Pablo Lopez | LAD | sp | 25 | 2.90 | 16 | 11 | 0 | 34 | 34 | 0 | 0 | 217.0 | 172 | 80 | 70 | 80 | 224 | 24 | 13 |
| Reynaldo Lopez | TB | sp | 27 | 13.99 | 0 | 20 | 0 | 25 | 25 | 0 | 0 | 74.0 | 143 | 122 | 115 | 47 | 85 | 35 | 2 |
| Yoan Lopez | Ari | mr | 28 | 9.41 | 2 | 7 | 3 | 49 | 0 | 0 | 0 | 66.0 | 110 | 83 | 69 | 39 | 49 | 22 | 16 |
| Michael Lorenzen | Tor | mr | 29 | 6.67 | 3 | 7 | 0 | 20 | 17 | 0 | 0 | 83.2 | 102 | 66 | 62 | 36 | 104 | 16 | 2 |
| Aaron Loup* | Det | mr | 33 | 2.35 | 3 | 2 | 5 | 64 | 0 | 0 | 0 | 76.2 | 56 | 25 | 20 | 16 | 70 | 10 | 6 |
| Joey Lucchesi* | Phi | sp | 28 | 11.41 | 2 | 4 | 0 | 6 | 6 | 0 | 0 | 23.2 | 49 | 34 | 30 | 8 | 18 | 5 | 3 |
| Seth Lugo | Cin | cl | 31 | 6.08 | 6 | 7 | 11 | 48 | 3 | 0 | 0 | 77.0 | 104 | 56 | 52 | 20 | 101 | 16 | 12 |
| Jesus Luzardo* | NYM | sp | 23 | 4.65 | 5 | 21 | 0 | 30 | 30 | 1 | 0 | 172.1 | 184 | 103 | 89 | 46 | 163 | 32 | 19 |
| Jordan Lyles | Cin | sp | 30 | 6.11 | 13 | 7 | 0 | 26 | 26 | 0 | 0 | 147.1 | 159 | 107 | 100 | 58 | 95 | 35 | 12 |
| Lance Lynn | NYY | sp | 34 | 4.07 | 14 | 14 | 0 | 36 | 36 | 5 | 2 | 236.2 | 218 | 125 | 107 | 71 | 233 | 37 | 15 |
| Kenta Maeda | Ari | sp | 33 | 3.14 | 6 | 14 | 0 | 32 | 32 | 3 | 0 | 221.0 | 163 | 84 | 77 | 44 | 305 | 43 | 6 |
| Matt Magill | Hou | mr | 31 | 15.04 | 0 | 1 | 0 | 19 | 0 | 0 | 0 | 23.1 | 36 | 40 | 39 | 21 | 24 | 10 | 0 |
| Tyler Mahle | Min | sp | 26 | 4.97 | 8 | 9 | 0 | 27 | 27 | 0 | 0 | 139.1 | 124 | 82 | 77 | 64 | 187 | 27 | 10 |
| Sean Manaea* | Phi | sp | 29 | 3.93 | 12 | 14 | 0 | 33 | 33 | 4 | 0 | 220.0 | 225 | 106 | 96 | 26 | 188 | 32 | 25 |
| Nick Margevicius* | Sea | sp | 25 | 6.67 | 4 | 2 | 2 | 31 | 1 | 0 | 0 | 81.0 | 106 | 64 | 60 | 27 | 74 | 16 | 6 |
| Brailyn Marquez* | Ari | mr | 22 | 13.50 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 6.0 | 9 | 9 | 9 | 13 | 2 | 1 | 0 |
| German Marquez | Det | sp | 26 | 2.98 | 18 | 15 | 0 | 36 | 36 | 7 | 3 | 242.0 | 231 | 98 | 80 | 73 | 203 | 12 | 26 |
| Evan Marshall | LAD | mr | 31 | 4.44 | 5 | 8 | 16 | 56 | 0 | 0 | 0 | 71.0 | 71 | 36 | 35 | 32 | 95 | 6 | 3 |
| Brett Martin* | Atl | mr | 26 | 3.93 | 2 | 1 | 1 | 43 | 0 | 0 | 0 | 50.1 | 38 | 25 | 22 | 28 | 38 | 4 | 3 |
| Chris Martin | Bos | mr | 35 | 1.32 | 1 | 1 | 5 | 27 | 0 | 0 | 0 | 41.0 | 19 | 6 | 6 | 0 | 37 | 3 | 1 |
| Chris Martin | Cle | mr | 35 | 1.71 | 1 | 1 | 11 | 26 | 0 | 0 | 0 | 31.2 | 17 | 6 | 6 | 5 | 38 | 3 | 2 |
| Chris Martin |   | mr | 35 | 1.49 | 2 | 2 | 16 | 53 | 0 | 0 | 0 | 72.2 | 36 | 12 | 12 | 5 | 75 | 6 | 3 |
| Carlos Martinez | Det | sp | 29 | 4.50 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 2.0 | 2 | 1 | 1 | 0 | 2 | 0 | 0 |
| Phil Maton | LAD | mr | 28 | 5.62 | 3 | 2 | 0 | 46 | 0 | 0 | 0 | 57.2 | 82 | 38 | 36 | 12 | 87 | 2 | 5 |
| Tyler Matzek* | Hou | mr | 30 | 2.12 | 4 | 2 | 3 | 51 | 0 | 0 | 0 | 80.2 | 62 | 22 | 19 | 28 | 121 | 1 | 2 |
| Dustin May | NYY | sp | 23 | 4.30 | 8 | 8 | 0 | 28 | 28 | 1 | 1 | 163.1 | 145 | 86 | 78 | 59 | 136 | 34 | 19 |
| Trevor May | ChC | mr | 31 | 3.95 | 0 | 4 | 1 | 55 | 0 | 0 | 0 | 84.1 | 95 | 39 | 37 | 24 | 141 | 17 | 6 |
| Mike Mayers | Atl | mr | 29 | 1.29 | 7 | 4 | 22 | 75 | 0 | 0 | 0 | 104.2 | 51 | 16 | 15 | 33 | 135 | 9 | 6 |
| Chris Mazza | Atl | sp | 31 | 7.24 | 2 | 5 | 0 | 14 | 8 | 1 | 0 | 46.0 | 63 | 37 | 37 | 23 | 46 | 9 | 2 |
| Lance McCullers | Pit | sp | 27 | 4.93 | 10 | 13 | 0 | 32 | 32 | 0 | 0 | 179.0 | 175 | 103 | 98 | 84 | 191 | 20 | 19 |
| Jake McGee* | KC | mr | 34 | 1.94 | 1 | 3 | 6 | 34 | 0 | 0 | 0 | 51.0 | 39 | 12 | 11 | 15 | 76 | 3 | 1 |
| Kyle McGowin | Cle | mr | 29 | 5.73 | 1 | 1 | 0 | 27 | 0 | 0 | 0 | 37.2 | 44 | 25 | 24 | 15 | 46 | 6 | 8 |
| Triston McKenzie | Tex | sp | 23 | 4.05 | 5 | 6 | 0 | 15 | 15 | 0 | 0 | 80.0 | 65 | 41 | 36 | 30 | 111 | 15 | 1 |
| John Means* | Col | sp | 28 | 5.63 | 8 | 6 | 0 | 25 | 25 | 0 | 0 | 131.0 | 128 | 85 | 82 | 25 | 127 | 45 | 12 |
| Nick Mears | LAA | mr | 24 | 6.35 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 5.2 | 8 | 6 | 4 | 5 | 8 | 1 | 0 |
| Adonis Medina | Bos | sp | 24 | 4.40 | 1 | 0 | 0 | 4 | 4 | 0 | 0 | 14.1 | 12 | 7 | 7 | 7 | 10 | 2 | 2 |
| Humberto Mejia | Col | sp | 24 | 14.21 | 0 | 5 | 0 | 10 | 10 | 0 | 0 | 31.2 | 55 | 50 | 50 | 21 | 29 | 19 | 0 |
| Mark Melancon | Bos | cl | 36 | 1.75 | 4 | 3 | 26 | 59 | 0 | 0 | 0 | 66.2 | 60 | 16 | 13 | 15 | 45 | 2 | 2 |
| Keury Mella | TB | mr | 27 | 5.05 | 2 | 3 | 0 | 29 | 0 | 0 | 0 | 35.2 | 56 | 26 | 20 | 16 | 32 | 2 | 4 |
| Conner Menez* | StL | mr | 26 | 6.17 | 0 | 0 | 0 | 7 | 0 | 0 | 0 | 11.2 | 7 | 8 | 8 | 6 | 8 | 2 | 2 |
| Daniel Mengden | NYM | mr | 28 | 7.36 | 4 | 23 | 0 | 34 | 34 | 0 | 0 | 161.1 | 207 | 139 | 132 | 94 | 124 | 32 | 9 |
| Julian Merryweather | Bos | mr | 29 | 3.71 | 1 | 1 | 1 | 23 | 8 | 0 | 0 | 43.2 | 41 | 18 | 18 | 17 | 42 | 3 | 3 |
| Keynan Middleton | Atl | mr | 27 | 7.62 | 0 | 0 | 0 | 9 | 0 | 0 | 0 | 13.0 | 21 | 11 | 11 | 7 | 17 | 2 | 0 |
| Wade Miley* | Tor | sp | 34 | 6.16 | 2 | 5 | 0 | 16 | 14 | 0 | 0 | 64.1 | 67 | 44 | 44 | 40 | 51 | 4 | 10 |
| Andrew Miller* | Mil | mr | 36 | 3.24 | 4 | 4 | 4 | 45 | 0 | 0 | 0 | 50.0 | 33 | 19 | 18 | 17 | 60 | 5 | 2 |
| Tyson Miller | TB | sp | 25 | 5.02 | 0 | 1 | 0 | 3 | 3 | 0 | 0 | 14.1 | 15 | 11 | 8 | 10 | 9 | 2 | 0 |
| Alec Mills | Bal | sp | 29 | 4.30 | 13 | 8 | 0 | 33 | 33 | 1 | 0 | 180.0 | 167 | 92 | 86 | 64 | 149 | 38 | 12 |
| Hoby Milner* | KC | mr | 30 | 6.28 | 0 | 1 | 2 | 34 | 0 | 0 | 0 | 57.1 | 44 | 42 | 40 | 26 | 46 | 12 | 6 |
| Tommy Milone* | Atl | sp | 34 | 5.82 | 6 | 12 | 0 | 25 | 25 | 1 | 1 | 130.0 | 158 | 87 | 84 | 31 | 107 | 23 | 15 |
| Mike Minor* | Sea | sp | 33 | 4.48 | 19 | 9 | 0 | 33 | 33 | 0 | 0 | 182.2 | 161 | 98 | 91 | 74 | 201 | 37 | 10 |
| A.J. Minter* | NYY | mr | 27 | 2.22 | 6 | 2 | 2 | 47 | 0 | 0 | 0 | 69.0 | 40 | 18 | 17 | 22 | 77 | 3 | 9 |
| Anthony Misiewicz* | ChW | mr | 26 | 5.31 | 5 | 0 | 2 | 40 | 0 | 0 | 0 | 40.2 | 43 | 24 | 24 | 16 | 56 | 1 | 0 |
| Casey Mize | Pit | sp | 24 | 5.32 | 4 | 8 | 0 | 18 | 18 | 0 | 0 | 93.0 | 82 | 60 | 55 | 40 | 78 | 13 | 6 |
| Frankie Montas | ChC | sp | 28 | 6.43 | 10 | 13 | 0 | 33 | 33 | 0 | 0 | 156.2 | 191 | 132 | 112 | 87 | 194 | 32 | 8 |
| Rafael Montero | Mia | cl | 30 | 2.24 | 3 | 4 | 9 | 46 | 0 | 0 | 0 | 56.1 | 33 | 16 | 14 | 29 | 58 | 6 | 7 |
| Jordan Montgomery* | Pit | sp | 28 | 3.84 | 6 | 9 | 0 | 24 | 24 | 0 | 0 | 140.2 | 148 | 66 | 60 | 24 | 137 | 11 | 13 |
| Mike Montgomery* | ChW | mr | 31 | 3.00 | 1 | 0 | 0 | 4 | 3 | 0 | 0 | 12.0 | 10 | 4 | 4 | 7 | 6 | 2 | 2 |
| Adrian Morejon* | SD | mr | 22 | 4.07 | 0 | 2 | 2 | 14 | 1 | 0 | 0 | 24.1 | 23 | 12 | 11 | 9 | 29 | 6 | 5 |
| Adam Morgan* | LAA | mr | 31 | 2.72 | 1 | 2 | 2 | 44 | 0 | 0 | 0 | 39.2 | 34 | 14 | 12 | 14 | 41 | 6 | 8 |
| Mike Morin | Det | mr | 30 | 17.47 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 5.2 | 14 | 11 | 11 | 2 | 2 | 2 | 1 |
| Charlie Morton | Mil | sp | 37 | 5.41 | 6 | 8 | 0 | 27 | 27 | 0 | 0 | 129.2 | 141 | 85 | 78 | 50 | 137 | 14 | 9 |
| Patrick Murphy | Atl | mr | 26 | 5.40 | 0 | 1 | 0 | 2 | 0 | 0 | 0 | 1.2 | 4 | 1 | 1 | 3 | 1 | 0 | 0 |
| Joe Musgrove | Min | sp | 28 | 6.29 | 8 | 9 | 0 | 23 | 23 | 1 | 0 | 117.1 | 134 | 83 | 82 | 58 | 176 | 21 | 1 |
| Nick Nelson | Bal | mr | 25 | 4.88 | 1 | 1 | 7 | 23 | 0 | 0 | 0 | 48.0 | 49 | 32 | 26 | 19 | 45 | 10 | 3 |
| Hector Neris | LAA | mr | 32 | 3.40 | 3 | 6 | 1 | 61 | 0 | 0 | 0 | 79.1 | 93 | 35 | 30 | 30 | 89 | 1 | 1 |
| Dovydas Neverauskas | Tor | mr | 28 | 8.36 | 2 | 3 | 0 | 25 | 0 | 0 | 0 | 28.0 | 43 | 28 | 26 | 24 | 29 | 5 | 3 |
| Jake Newberry | Mia | mr | 26 | 3.86 | 2 | 1 | 10 | 28 | 0 | 0 | 0 | 28.0 | 18 | 12 | 12 | 11 | 32 | 5 | 9 |
| Sean Newcomb* | Tor | sp | 28 | 9.39 | 4 | 16 | 0 | 32 | 32 | 0 | 0 | 115.0 | 184 | 125 | 120 | 49 | 86 | 35 | 10 |
| Ljay Newsome | StL | sp | 24 | 9.49 | 2 | 8 | 0 | 13 | 12 | 1 | 0 | 61.2 | 109 | 69 | 65 | 14 | 35 | 25 | 2 |
| Juan Nicasio | Phi | mr | 34 | 19.64 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 3.2 | 8 | 8 | 8 | 2 | 2 | 2 | 0 |
| Aaron Nola | Min | sp | 28 | 2.80 | 16 | 11 | 0 | 33 | 33 | 1 | 1 | 222.0 | 145 | 74 | 69 | 63 | 311 | 26 | 7 |
| Daniel Norris* | Tor | mr | 28 | 2.19 | 3 | 0 | 5 | 49 | 1 | 0 | 0 | 98.2 | 78 | 25 | 24 | 21 | 92 | 8 | 2 |
| Ivan Nova | KC | sp | 34 | 6.14 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 7.1 | 9 | 6 | 5 | 0 | 4 | 3 | 0 |
| Darren O'Day | Sea | mr | 38 | 2.95 | 3 | 5 | 12 | 52 | 0 | 0 | 0 | 55.0 | 40 | 20 | 18 | 19 | 66 | 5 | 3 |
| Jake Odorizzi | ChW | sp | 31 | 10.89 | 1 | 5 | 0 | 9 | 9 | 0 | 0 | 38.0 | 58 | 47 | 46 | 16 | 23 | 13 | 2 |
| Shohei Ohtani | Ari | dh | 26 | 24.47 | 0 | 3 | 0 | 4 | 3 | 0 | 0 | 10.2 | 26 | 30 | 29 | 23 | 14 | 4 | 3 |
| Josh Osich* | Pit | mr | 32 | 9.35 | 3 | 3 | 1 | 31 | 0 | 0 | 0 | 42.1 | 56 | 49 | 44 | 19 | 37 | 16 | 1 |
| Roberto Osuna | Tor | mr | 26 | 2.35 | 0 | 0 | 0 | 9 | 0 | 0 | 0 | 15.1 | 10 | 5 | 4 | 6 | 7 | 1 | 2 |
| Corey Oswalt | Cle | mr | 27 | 6.36 | 1 | 3 | 0 | 16 | 4 | 1 | 0 | 46.2 | 61 | 36 | 33 | 9 | 48 | 9 | 2 |
| Adam Ottavino | Ari | mr | 35 | 8.32 | 2 | 4 | 6 | 43 | 0 | 0 | 0 | 44.1 | 57 | 49 | 41 | 46 | 53 | 7 | 3 |
| Johan Oviedo | StL | sp | 23 | 6.88 | 1 | 7 | 0 | 15 | 15 | 0 | 0 | 68.0 | 94 | 61 | 52 | 24 | 61 | 12 | 9 |
| Chris Paddack | Mia | sp | 25 | 3.22 | 12 | 4 | 0 | 24 | 24 | 0 | 0 | 137.0 | 115 | 55 | 49 | 26 | 135 | 26 | 11 |
| Emilio Pagan | StL | mr | 30 | 2.18 | 2 | 5 | 3 | 54 | 0 | 0 | 0 | 74.1 | 36 | 21 | 18 | 22 | 64 | 11 | 6 |
| Enoli Paredes | TB | mr | 25 | 5.01 | 2 | 3 | 1 | 46 | 0 | 0 | 0 | 59.1 | 65 | 34 | 33 | 50 | 64 | 6 | 12 |
| Blake Parker | Det | mr | 36 | 2.63 | 4 | 3 | 2 | 40 | 2 | 0 | 0 | 54.2 | 33 | 16 | 16 | 18 | 72 | 9 | 3 |
| Luis Patino | NYM | mr | 21 | 8.16 | 0 | 0 | 0 | 5 | 2 | 0 | 0 | 14.1 | 17 | 13 | 13 | 10 | 16 | 3 | 2 |
| James Paxton* | StL | sp | 32 | 6.93 | 4 | 13 | 0 | 20 | 20 | 0 | 0 | 101.1 | 114 | 80 | 78 | 33 | 123 | 18 | 4 |
| Joel Payamps | Mia | mr | 27 | 9.00 | 0 | 2 | 0 | 4 | 0 | 0 | 0 | 4.0 | 8 | 4 | 4 | 1 | 5 | 0 | 0 |
| Nate Pearson | NYM | sp | 24 | 4.67 | 2 | 5 | 0 | 24 | 12 | 0 | 0 | 79.0 | 55 | 43 | 41 | 63 | 63 | 18 | 5 |
| Felix Pena | SF | mr | 31 | 3.74 | 4 | 4 | 1 | 55 | 0 | 0 | 0 | 89.0 | 87 | 40 | 37 | 31 | 88 | 6 | 3 |
| Freddy Peralta | ChW | mr | 25 | 2.64 | 5 | 1 | 2 | 33 | 4 | 0 | 0 | 71.2 | 57 | 23 | 21 | 35 | 115 | 1 | 3 |
| Wandy Peralta* | Tex | mr | 29 | 4.74 | 3 | 1 | 0 | 60 | 0 | 0 | 0 | 89.1 | 85 | 50 | 47 | 33 | 69 | 6 | 7 |
| Luis Perdomo | Tor | mr | 28 | 6.28 | 6 | 0 | 0 | 48 | 0 | 0 | 0 | 90.1 | 80 | 67 | 63 | 57 | 106 | 20 | 3 |
| Cionel Perez* | Cle | mr | 25 | 3.81 | 1 | 1 | 1 | 21 | 0 | 0 | 0 | 26.0 | 35 | 11 | 11 | 12 | 19 | 4 | 5 |
| Martin Perez* | SD | sp | 30 | 3.70 | 13 | 10 | 0 | 33 | 33 | 1 | 0 | 192.0 | 166 | 99 | 79 | 73 | 145 | 25 | 34 |
| Oliver Perez* | Oak | mr | 39 | 2.81 | 1 | 2 | 0 | 37 | 0 | 0 | 0 | 32.0 | 24 | 11 | 10 | 9 | 16 | 1 | 3 |
| David Peterson* | SF | sp | 25 | 3.03 | 5 | 13 | 0 | 27 | 27 | 0 | 0 | 172.1 | 124 | 65 | 58 | 68 | 153 | 16 | 29 |
| Yusmeiro Petit | Bos | mr | 36 | 2.96 | 3 | 0 | 4 | 55 | 0 | 0 | 0 | 48.2 | 41 | 16 | 16 | 12 | 37 | 6 | 1 |
| David Phelps | Pit | mr | 34 | 6.03 | 0 | 2 | 0 | 40 | 0 | 0 | 0 | 62.2 | 72 | 50 | 42 | 13 | 85 | 30 | 5 |
| Evan Phillips | NYM | mr | 26 | 4.06 | 1 | 0 | 2 | 24 | 0 | 0 | 0 | 31.0 | 25 | 15 | 14 | 20 | 39 | 0 | 1 |
| Michael Pineda | LAA | sp | 32 | 4.64 | 5 | 6 | 0 | 17 | 17 | 0 | 0 | 87.1 | 91 | 47 | 45 | 28 | 86 | 2 | 2 |
| Nick Pivetta | Atl | mr | 28 | 3.21 | 1 | 1 | 1 | 13 | 2 | 0 | 0 | 28.0 | 27 | 13 | 10 | 8 | 11 | 2 | 2 |
| Zach Plesac | Cin | sp | 26 | 3.65 | 15 | 6 | 0 | 26 | 26 | 8 | 2 | 192.1 | 164 | 83 | 78 | 31 | 193 | 26 | 11 |
| Adam Plutko | Bos | mr | 29 | 3.19 | 9 | 2 | 0 | 20 | 19 | 0 | 0 | 90.1 | 81 | 33 | 32 | 23 | 41 | 10 | 18 |
| Drew Pomeranz* | NYY | mr | 32 | 1.63 | 3 | 2 | 4 | 47 | 0 | 0 | 0 | 66.1 | 31 | 16 | 12 | 41 | 97 | 0 | 5 |
| Cody Ponce | NYY | sp | 27 | 4.32 | 2 | 2 | 0 | 4 | 4 | 1 | 1 | 25.0 | 14 | 12 | 12 | 5 | 12 | 5 | 1 |
| Daniel Ponce de Leon | Hou | sp | 29 | 5.29 | 5 | 9 | 0 | 22 | 22 | 0 | 0 | 97.0 | 78 | 60 | 57 | 55 | 140 | 29 | 2 |
| Sean Poppen | Cin | mr | 27 | 2.89 | 0 | 1 | 1 | 8 | 0 | 0 | 0 | 9.1 | 11 | 4 | 3 | 4 | 11 | 1 | 0 |
| Rick Porcello | LAD | sp | 32 | 6.35 | 7 | 17 | 0 | 32 | 32 | 0 | 0 | 168.2 | 220 | 124 | 119 | 53 | 167 | 21 | 10 |
| Ryan Pressly | Mil | cl | 32 | 4.87 | 6 | 1 | 1 | 48 | 0 | 0 | 0 | 61.0 | 61 | 34 | 33 | 19 | 76 | 12 | 5 |
| Cal Quantrill | ChW | mr | 26 | 3.79 | 5 | 1 | 11 | 43 | 1 | 0 | 0 | 76.0 | 75 | 37 | 32 | 19 | 54 | 11 | 7 |
| Jose Quintana* | Mia | mr | 32 | 4.74 | 0 | 1 | 1 | 14 | 0 | 0 | 0 | 24.2 | 27 | 13 | 13 | 8 | 27 | 6 | 3 |
| Tanner Rainey | StL | mr | 28 | 1.69 | 0 | 2 | 1 | 13 | 0 | 0 | 0 | 16.0 | 9 | 5 | 3 | 2 | 21 | 3 | 0 |
| Brooks Raley* | Pit | mr | 33 | 6.04 | 1 | 7 | 5 | 41 | 0 | 0 | 0 | 53.2 | 36 | 37 | 36 | 17 | 59 | 13 | 2 |
| Erasmo Ramirez | Bos | mr | 31 | 1.92 | 11 | 2 | 1 | 21 | 0 | 0 | 0 | 89.0 | 51 | 21 | 19 | 21 | 61 | 6 | 7 |
| Nick Ramirez* | Cin | mr | 31 | 6.46 | 1 | 1 | 1 | 14 | 0 | 0 | 0 | 23.2 | 23 | 17 | 17 | 6 | 23 | 10 | 0 |
| Noe Ramirez | Mia | mr | 31 | 1.56 | 9 | 6 | 19 | 57 | 0 | 0 | 0 | 103.2 | 64 | 21 | 18 | 30 | 65 | 1 | 12 |
| Yohan Ramirez | KC | mr | 26 | 4.60 | 2 | 4 | 4 | 37 | 0 | 0 | 0 | 60.2 | 36 | 32 | 31 | 51 | 80 | 14 | 5 |
| Drew Rasmussen | NYM | mr | 25 | 6.94 | 0 | 1 | 0 | 28 | 0 | 0 | 0 | 48.0 | 57 | 39 | 37 | 31 | 68 | 14 | 4 |
| Robbie Ray* | StL | sp | 29 | 6.66 | 5 | 16 | 0 | 33 | 33 | 0 | 0 | 158.0 | 154 | 119 | 117 | 124 | 205 | 45 | 12 |
| Colin Rea | Sea | mr | 30 | 2.62 | 3 | 1 | 1 | 11 | 4 | 1 | 1 | 34.1 | 34 | 10 | 10 | 9 | 21 | 3 | 3 |
| Cody Reed* | ChC | mr | 28 | 5.48 | 1 | 0 | 0 | 12 | 0 | 0 | 0 | 23.0 | 24 | 14 | 14 | 20 | 18 | 5 | 3 |
| Sean Reid-Foley | Min | mr | 25 | 4.24 | 1 | 1 | 0 | 12 | 0 | 0 | 0 | 17.0 | 15 | 9 | 8 | 8 | 13 | 2 | 0 |
| Alex Reyes | ChW | mr | 26 | 5.68 | 3 | 3 | 3 | 37 | 1 | 0 | 0 | 52.1 | 48 | 35 | 33 | 43 | 69 | 4 | 6 |
| Garrett Richards | Mil | sp | 33 | 3.73 | 11 | 6 | 0 | 30 | 30 | 0 | 0 | 166.1 | 145 | 81 | 69 | 64 | 173 | 28 | 7 |
| Trevor Richards | KC | mr | 28 | 13.50 | 1 | 0 | 0 | 6 | 0 | 0 | 0 | 9.1 | 16 | 15 | 14 | 7 | 10 | 6 | 1 |
| Tanner Roark | Tor | sp | 34 | 7.94 | 6 | 16 | 0 | 32 | 32 | 0 | 0 | 138.1 | 197 | 130 | 122 | 76 | 121 | 29 | 26 |
| Hansel Robles | SD | mr | 30 | 5.99 | 4 | 2 | 2 | 57 | 0 | 0 | 0 | 67.2 | 63 | 52 | 45 | 50 | 75 | 14 | 1 |
| Carlos Rodon* | SF | sp | 28 | 5.40 | 1 | 2 | 0 | 5 | 5 | 0 | 0 | 26.2 | 27 | 18 | 16 | 15 | 21 | 2 | 3 |
| Joely Rodriguez* | Bal | mr | 29 | 4.27 | 6 | 2 | 1 | 34 | 0 | 0 | 0 | 46.1 | 42 | 23 | 22 | 15 | 49 | 5 | 2 |
| Richard Rodriguez | Sea | mr | 31 | 1.92 | 3 | 3 | 1 | 69 | 0 | 0 | 0 | 89.0 | 52 | 24 | 19 | 21 | 139 | 8 | 6 |
| Chaz Roe | Cle | mr | 34 | 4.75 | 1 | 2 | 2 | 28 | 0 | 0 | 0 | 36.0 | 35 | 20 | 19 | 16 | 36 | 3 | 4 |
| Taylor Rogers* | Mia | cl | 30 | 4.57 | 2 | 3 | 3 | 22 | 0 | 0 | 0 | 21.2 | 24 | 11 | 11 | 7 | 18 | 2 | 4 |
| Trevor Rogers* | KC | sp | 23 | 7.78 | 3 | 8 | 0 | 19 | 19 | 0 | 0 | 93.2 | 128 | 84 | 81 | 58 | 118 | 20 | 12 |
| Tyler Rogers | Cin | mr | 30 | 3.51 | 3 | 3 | 8 | 59 | 0 | 0 | 0 | 84.2 | 81 | 34 | 33 | 21 | 86 | 6 | 17 |
| Jordan Romano | ChC | mr | 28 | 4.27 | 2 | 2 | 9 | 36 | 0 | 0 | 0 | 46.1 | 35 | 24 | 22 | 20 | 60 | 13 | 5 |
| Sal Romano | Oak | mr | 27 | 10.13 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | 5.1 | 9 | 7 | 6 | 4 | 3 | 0 | 0 |
| Sergio Romo | Col | mr | 38 | 4.01 | 7 | 5 | 9 | 72 | 0 | 0 | 0 | 85.1 | 79 | 46 | 38 | 40 | 82 | 14 | 0 |
| Hector Rondon | Tor | mr | 33 | 5.93 | 4 | 0 | 0 | 32 | 0 | 0 | 0 | 41.0 | 53 | 27 | 27 | 18 | 46 | 9 | 2 |
| Trevor Rosenthal | ChC | cl | 31 | 2.23 | 4 | 1 | 14 | 52 | 0 | 0 | 0 | 60.2 | 39 | 17 | 15 | 18 | 89 | 7 | 4 |
| Ramon Rosso | KC | mr | 25 | 5.40 | 2 | 0 | 0 | 6 | 0 | 0 | 0 | 15.0 | 16 | 9 | 9 | 8 | 16 | 4 | 1 |
| Jose Ruiz | Tex | mr | 26 | 7.41 | 1 | 0 | 2 | 13 | 0 | 0 | 0 | 17.0 | 19 | 15 | 14 | 16 | 14 | 1 | 2 |
| Kyle Ryan* | SF | mr | 29 | 5.62 | 0 | 3 | 3 | 40 | 0 | 0 | 0 | 65.2 | 64 | 42 | 41 | 21 | 52 | 24 | 10 |
| Hyun Jin Ryu* | Ari | sp | 34 | 2.71 | 13 | 11 | 0 | 32 | 32 | 3 | 2 | 219.0 | 189 | 71 | 66 | 56 | 202 | 20 | 32 |
| Casey Sadler | SF | mr | 30 | 5.28 | 2 | 3 | 0 | 34 | 0 | 0 | 0 | 44.1 | 38 | 28 | 26 | 26 | 38 | 8 | 5 |
| Jeff Samardzija | Pit | sp | 36 | 8.94 | 0 | 7 | 0 | 9 | 9 | 0 | 0 | 49.1 | 73 | 55 | 49 | 6 | 25 | 27 | 1 |
| Anibal Sanchez | Tex | sp | 37 | 6.36 | 5 | 17 | 0 | 28 | 28 | 0 | 0 | 143.0 | 183 | 111 | 101 | 62 | 98 | 31 | 15 |
| Sixto Sanchez | Cle | sp | 22 | 3.86 | 7 | 6 | 0 | 22 | 22 | 2 | 0 | 128.1 | 135 | 55 | 55 | 36 | 123 | 13 | 16 |
| Patrick Sandoval* | Pit | sp | 24 | 3.19 | 3 | 4 | 0 | 10 | 10 | 0 | 0 | 59.1 | 52 | 25 | 21 | 14 | 35 | 11 | 10 |
| Dennis Santana | Hou | mr | 25 | 4.89 | 0 | 1 | 0 | 25 | 0 | 0 | 0 | 38.2 | 35 | 21 | 21 | 18 | 43 | 6 | 1 |
| Max Scherzer | Oak | sp | 36 | 3.82 | 10 | 14 | 0 | 33 | 33 | 0 | 0 | 193.0 | 186 | 88 | 82 | 66 | 257 | 24 | 6 |
| Clarke Schmidt | Phi | mr | 25 | 9.96 | 2 | 6 | 0 | 9 | 9 | 0 | 0 | 40.2 | 52 | 46 | 45 | 35 | 34 | 4 | 6 |
| John Schreiber | Pit | mr | 27 | 6.38 | 0 | 1 | 2 | 35 | 0 | 0 | 0 | 48.0 | 67 | 37 | 34 | 14 | 37 | 6 | 6 |
| Tanner Scott* | ChC | mr | 26 | 1.34 | 4 | 4 | 11 | 58 | 0 | 0 | 0 | 80.2 | 42 | 13 | 12 | 27 | 81 | 4 | 8 |
| Andre Scrubb | Was | mr | 26 | 3.70 | 2 | 1 | 1 | 21 | 0 | 0 | 0 | 24.1 | 22 | 10 | 10 | 25 | 20 | 2 | 4 |
| Sam Selman* | StL | mr | 30 | 2.28 | 1 | 0 | 4 | 51 | 0 | 0 | 0 | 67.0 | 43 | 18 | 17 | 31 | 74 | 4 | 3 |
| Antonio Senzatela | Pit | sp | 26 | 3.23 | 13 | 12 | 0 | 32 | 32 | 6 | 2 | 225.2 | 233 | 103 | 81 | 46 | 138 | 29 | 40 |
| Justus Sheffield* | Phi | sp | 25 | 3.73 | 9 | 14 | 0 | 33 | 33 | 3 | 2 | 205.1 | 206 | 97 | 85 | 76 | 167 | 15 | 17 |
| Ryan Sherriff* | ChW | mr | 31 | 2.87 | 5 | 0 | 1 | 29 | 0 | 0 | 0 | 37.2 | 30 | 14 | 12 | 12 | 17 | 2 | 1 |
| Matt Shoemaker | Cle | sp | 34 | 3.09 | 0 | 5 | 0 | 10 | 10 | 1 | 0 | 64.0 | 48 | 24 | 22 | 20 | 57 | 12 | 7 |
| Matt Shoemaker | Sea | sp | 34 | 6.02 | 4 | 4 | 0 | 9 | 9 | 1 | 1 | 52.1 | 53 | 37 | 35 | 19 | 46 | 20 | 8 |
| Matt Shoemaker |   | sp | 34 | 4.41 | 4 | 9 | 0 | 19 | 19 | 2 | 1 | 116.1 | 101 | 61 | 57 | 39 | 103 | 32 | 15 |
| Chasen Shreve* | Bos | mr | 30 | 1.78 | 7 | 0 | 1 | 49 | 0 | 0 | 0 | 86.0 | 41 | 19 | 17 | 42 | 106 | 10 | 7 |
| Lucas Sims | Det | mr | 27 | 2.09 | 1 | 7 | 36 | 57 | 0 | 0 | 0 | 64.2 | 26 | 17 | 15 | 38 | 92 | 7 | 4 |
| Brady Singer | KC | sp | 24 | 4.06 | 10 | 9 | 0 | 32 | 32 | 0 | 0 | 173.0 | 165 | 82 | 78 | 66 | 194 | 24 | 10 |
| Tarik Skubal* | Sea | sp | 24 | 5.10 | 8 | 9 | 0 | 25 | 23 | 1 | 0 | 114.2 | 97 | 72 | 65 | 50 | 122 | 31 | 17 |
| Aaron Slegers | Mil | mr | 28 | 1.41 | 8 | 3 | 5 | 29 | 3 | 1 | 1 | 70.1 | 54 | 12 | 11 | 12 | 56 | 2 | 4 |
| Devin Smeltzer* | TB | mr | 25 | 8.05 | 1 | 19 | 0 | 34 | 30 | 0 | 0 | 138.2 | 179 | 131 | 124 | 56 | 127 | 25 | 4 |
| Burch Smith | Sea | mr | 31 | 0.65 | 5 | 0 | 3 | 18 | 0 | 0 | 0 | 55.2 | 30 | 4 | 4 | 8 | 55 | 1 | 1 |
| Caleb Smith* | Mil | sp | 29 | 4.24 | 4 | 3 | 0 | 14 | 14 | 0 | 0 | 68.0 | 53 | 37 | 32 | 41 | 56 | 15 | 6 |
| Drew Smith | Phi | mr | 27 | 2.84 | 0 | 1 | 2 | 14 | 0 | 0 | 0 | 19.0 | 12 | 6 | 6 | 6 | 18 | 2 | 2 |
| Josh A. Smith | Col | mr | 33 | 8.20 | 3 | 1 | 1 | 28 | 1 | 0 | 0 | 52.2 | 70 | 49 | 48 | 19 | 44 | 7 | 0 |
| Riley Smith | Det | mr | 26 | 2.18 | 3 | 1 | 2 | 19 | 0 | 0 | 0 | 53.2 | 40 | 19 | 13 | 26 | 74 | 3 | 7 |
| Will Smith* | Min | mr | 31 | 5.74 | 1 | 3 | 0 | 26 | 0 | 0 | 0 | 26.2 | 23 | 18 | 17 | 13 | 29 | 7 | 1 |
| Drew Smyly* | Hou | sp | 32 | 3.07 | 7 | 4 | 0 | 17 | 17 | 0 | 0 | 99.2 | 82 | 39 | 34 | 35 | 162 | 12 | 2 |
| Cy Sneed | KC | mr | 28 | 8.42 | 3 | 3 | 0 | 34 | 0 | 0 | 0 | 51.1 | 76 | 56 | 48 | 32 | 66 | 11 | 3 |
| Blake Snell* | LAD | sp | 28 | 5.00 | 8 | 13 | 0 | 31 | 31 | 2 | 0 | 171.0 | 164 | 102 | 95 | 51 | 212 | 42 | 15 |
| Chad Sobotka | Hou | mr | 27 | 9.00 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 3.0 | 6 | 3 | 3 | 3 | 1 | 1 | 0 |
| Joakim Soria | StL | mr | 37 | 2.31 | 8 | 7 | 19 | 49 | 0 | 0 | 0 | 70.0 | 58 | 22 | 18 | 20 | 69 | 4 | 4 |
| Mike Soroka | TB | sp | 23 | 4.10 | 1 | 5 | 0 | 9 | 9 | 0 | 0 | 48.1 | 49 | 25 | 22 | 25 | 32 | 3 | 6 |
| Gregory Soto* | StL | mr | 26 | 2.87 | 5 | 3 | 0 | 60 | 0 | 0 | 0 | 84.2 | 61 | 30 | 27 | 45 | 104 | 7 | 6 |
| Glenn Sparkman | Hou | mr | 29 | 11.37 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | 6.1 | 14 | 9 | 8 | 5 | 5 | 1 | 0 |
| Jeffrey Springs* | TB | mr | 28 | 7.29 | 3 | 2 | 0 | 45 | 0 | 0 | 0 | 82.2 | 117 | 69 | 67 | 28 | 106 | 19 | 5 |
| Craig Stammen | Hou | mr | 37 | 3.69 | 3 | 2 | 1 | 55 | 0 | 0 | 0 | 83.0 | 82 | 38 | 34 | 21 | 77 | 5 | 4 |
| Cody Stashak | Cin | mr | 27 | 2.37 | 6 | 2 | 8 | 41 | 0 | 0 | 0 | 64.2 | 49 | 18 | 17 | 18 | 78 | 6 | 5 |
| Josh Staumont | TB | mr | 27 | 4.38 | 5 | 4 | 1 | 58 | 0 | 0 | 0 | 76.0 | 60 | 37 | 37 | 49 | 108 | 10 | 2 |
| Robert Stock | Cin | mr | 31 | 6.54 | 1 | 0 | 0 | 25 | 0 | 0 | 0 | 31.2 | 38 | 24 | 23 | 25 | 37 | 4 | 6 |
| Matt Strahm* | StL | mr | 29 | 4.52 | 1 | 3 | 2 | 42 | 0 | 0 | 0 | 69.2 | 57 | 36 | 35 | 25 | 50 | 12 | 4 |
| Stephen Strasburg | Cin | sp | 32 | 4.44 | 4 | 2 | 0 | 11 | 11 | 0 | 0 | 52.2 | 56 | 31 | 26 | 20 | 26 | 12 | 3 |
| Chris Stratton | StL | mr | 30 | 4.50 | 3 | 3 | 0 | 45 | 0 | 0 | 0 | 60.0 | 59 | 30 | 30 | 28 | 73 | 6 | 3 |
| Ross Stripling | Tex | sp | 31 | 8.80 | 1 | 18 | 0 | 27 | 25 | 0 | 0 | 117.2 | 164 | 127 | 115 | 70 | 104 | 36 | 15 |
| Pedro Strop | Col | mr | 36 | 7.00 | 1 | 1 | 2 | 9 | 0 | 0 | 0 | 9.0 | 8 | 8 | 7 | 8 | 5 | 0 | 0 |
| Andrew Suarez* | SF | mr | 28 | 7.27 | 0 | 1 | 0 | 19 | 0 | 0 | 0 | 26.0 | 31 | 26 | 21 | 24 | 18 | 2 | 8 |
| Jose Suarez* | Cle | sp | 23 | 10.62 | 1 | 4 | 0 | 6 | 6 | 0 | 0 | 20.1 | 38 | 28 | 24 | 13 | 10 | 6 | 5 |
| Ranger Suarez* | Cle | mr | 25 | 10.13 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 8.0 | 12 | 11 | 9 | 7 | 4 | 1 | 0 |
| Wander Suero | Tor | mr | 29 | 3.06 | 1 | 3 | 3 | 59 | 0 | 0 | 0 | 85.1 | 79 | 33 | 29 | 32 | 106 | 4 | 9 |
| Cole Sulser | Mil | cl | 31 | 4.03 | 1 | 1 | 0 | 36 | 0 | 0 | 0 | 51.1 | 38 | 24 | 23 | 25 | 45 | 5 | 5 |
| Brent Suter* | LAD | mr | 31 | 2.93 | 3 | 1 | 6 | 56 | 0 | 0 | 0 | 116.2 | 96 | 43 | 38 | 21 | 150 | 14 | 8 |
| Masahiro Tanaka | ChW | sp | 32 | 3.93 | 11 | 10 | 0 | 30 | 30 | 0 | 0 | 174.0 | 179 | 88 | 76 | 41 | 173 | 21 | 4 |
| Stephen Tarpley* | Cin | mr | 28 | 0.00 | 1 | 0 | 0 | 5 | 0 | 0 | 0 | 6.1 | 1 | 1 | 0 | 3 | 8 | 0 | 1 |
| Dillon Tate | Pit | mr | 27 | 2.59 | 4 | 3 | 9 | 28 | 0 | 0 | 0 | 41.2 | 29 | 16 | 12 | 13 | 36 | 1 | 4 |
| Blake Taylor* | ChW | mr | 25 | 2.71 | 5 | 1 | 12 | 55 | 0 | 0 | 0 | 76.1 | 52 | 23 | 23 | 32 | 51 | 6 | 3 |
| Josh Taylor* | Atl | mr | 28 | 5.31 | 1 | 2 | 2 | 28 | 0 | 0 | 0 | 40.2 | 32 | 26 | 24 | 26 | 23 | 6 | 2 |
| Julio Teheran | Tex | sp | 30 | 7.09 | 3 | 15 | 0 | 25 | 25 | 0 | 0 | 120.2 | 153 | 104 | 95 | 64 | 82 | 39 | 7 |
| Ryan Tepera | Tor | mr | 33 | 5.91 | 4 | 0 | 2 | 41 | 0 | 0 | 0 | 42.2 | 52 | 30 | 28 | 30 | 65 | 3 | 2 |
| Caleb Thielbar* | Mia | mr | 34 | 3.78 | 2 | 1 | 3 | 51 | 0 | 0 | 0 | 66.2 | 64 | 28 | 28 | 32 | 66 | 3 | 7 |
| Ryan Thompson | Oak | mr | 29 | 4.35 | 0 | 2 | 1 | 39 | 3 | 0 | 0 | 49.2 | 56 | 25 | 24 | 15 | 29 | 9 | 10 |
| Trent Thornton | SF | sp | 27 | 9.64 | 0 | 6 | 0 | 8 | 8 | 0 | 0 | 32.2 | 75 | 42 | 35 | 16 | 24 | 3 | 2 |
| Lewis Thorpe* | Tex | mr | 25 | 9.03 | 2 | 17 | 0 | 25 | 25 | 0 | 0 | 114.2 | 181 | 124 | 115 | 60 | 62 | 38 | 26 |
| Jesus Tinoco | SF | mr | 26 | 5.40 | 0 | 2 | 0 | 15 | 0 | 0 | 0 | 18.1 | 13 | 11 | 11 | 20 | 14 | 2 | 2 |
| Josh Tomlin | Mia | mr | 36 | 3.79 | 11 | 9 | 0 | 27 | 27 | 0 | 0 | 159.0 | 153 | 75 | 67 | 26 | 158 | 24 | 12 |
| Justin Topa | NYY | mr | 30 | 3.97 | 0 | 0 | 0 | 9 | 0 | 0 | 0 | 11.1 | 11 | 5 | 5 | 3 | 12 | 1 | 0 |
| Touki Toussaint | LAA | sp | 25 | 6.27 | 0 | 3 | 0 | 18 | 18 | 0 | 0 | 33.0 | 41 | 25 | 23 | 17 | 41 | 12 | 2 |
| Blake Treinen | ChC | mr | 33 | 3.92 | 5 | 2 | 1 | 60 | 0 | 0 | 0 | 96.1 | 98 | 43 | 42 | 32 | 97 | 6 | 5 |
| Andrew Triggs | Mil | mr | 32 | 8.76 | 0 | 0 | 0 | 3 | 3 | 0 | 0 | 12.1 | 19 | 12 | 12 | 4 | 11 | 5 | 2 |
| Lou Trivino | Atl | mr | 29 | 2.74 | 1 | 1 | 0 | 23 | 0 | 0 | 0 | 42.2 | 30 | 14 | 13 | 15 | 55 | 6 | 4 |
| Nick Tropeano | LAA | mr | 30 | 4.74 | 7 | 3 | 0 | 23 | 0 | 0 | 0 | 87.1 | 99 | 54 | 46 | 28 | 95 | 8 | 4 |
| Nik Turley* | ChW | mr | 31 | 2.10 | 7 | 1 | 1 | 53 | 0 | 0 | 0 | 73.0 | 38 | 17 | 17 | 21 | 70 | 4 | 3 |
| Spencer Turnbull | Bal | sp | 28 | 3.70 | 14 | 8 | 0 | 33 | 33 | 0 | 0 | 177.1 | 150 | 87 | 73 | 91 | 171 | 15 | 13 |
| Duane Underwood | Atl | mr | 26 | 5.40 | 2 | 4 | 2 | 55 | 0 | 0 | 0 | 70.0 | 96 | 47 | 42 | 16 | 101 | 16 | 7 |
| Jose Urena | Min | sp | 29 | 4.66 | 8 | 7 | 0 | 17 | 17 | 0 | 0 | 94.2 | 93 | 53 | 49 | 45 | 67 | 10 | 6 |
| Julio Urias* | Bal | sp | 24 | 3.05 | 17 | 9 | 0 | 30 | 30 | 1 | 1 | 183.0 | 152 | 68 | 62 | 62 | 136 | 14 | 24 |
| Jose Urquidy | Sea | sp | 26 | 3.16 | 8 | 4 | 0 | 17 | 17 | 1 | 1 | 105.1 | 75 | 45 | 37 | 40 | 70 | 14 | 7 |
| Cesar Valdez | Oak | cl | 36 | 0.79 | 2 | 1 | 1 | 29 | 0 | 0 | 0 | 45.2 | 23 | 6 | 4 | 18 | 43 | 1 | 1 |
| Framber Valdez* | Mia | sp | 27 | 2.82 | 12 | 8 | 0 | 30 | 30 | 1 | 1 | 201.0 | 191 | 72 | 63 | 45 | 209 | 9 | 31 |
| Phillips Valdez | Mia | mr | 29 | 4.95 | 2 | 1 | 2 | 41 | 0 | 0 | 0 | 72.2 | 78 | 44 | 40 | 41 | 63 | 5 | 6 |
| Vince Velasquez | Tor | sp | 29 | 8.51 | 2 | 13 | 0 | 25 | 22 | 0 | 0 | 92.0 | 142 | 92 | 87 | 48 | 124 | 20 | 5 |
| Justin Verlander | Hou | sp | 38 | 8.36 | 0 | 2 | 0 | 4 | 4 | 0 | 0 | 14.0 | 22 | 13 | 13 | 8 | 15 | 2 | 1 |
| Nick Vincent | Phi | mr | 34 | 4.72 | 0 | 1 | 1 | 35 | 0 | 0 | 0 | 53.1 | 44 | 28 | 28 | 16 | 40 | 18 | 13 |
| Austin Voth | KC | sp | 29 | 5.94 | 8 | 14 | 0 | 30 | 29 | 5 | 0 | 172.2 | 184 | 120 | 114 | 71 | 147 | 46 | 16 |
| Jacob Waguespack | Tor | mr | 27 | 8.02 | 0 | 1 | 1 | 10 | 0 | 0 | 0 | 21.1 | 44 | 21 | 19 | 10 | 19 | 4 | 2 |
| Adam Wainwright | Col | sp | 39 | 4.38 | 9 | 10 | 0 | 27 | 27 | 2 | 0 | 172.2 | 187 | 93 | 84 | 53 | 166 | 30 | 23 |
| Taijuan Walker | Hou | sp | 28 | 3.36 | 10 | 14 | 0 | 33 | 33 | 1 | 0 | 203.2 | 172 | 88 | 76 | 73 | 192 | 27 | 15 |
| Tony Watson* | Sea | mr | 36 | 2.35 | 3 | 2 | 1 | 52 | 0 | 0 | 0 | 61.1 | 34 | 18 | 16 | 13 | 54 | 6 | 3 |
| Luke Weaver | ChW | sp | 27 | 5.28 | 3 | 3 | 0 | 16 | 16 | 0 | 0 | 76.2 | 87 | 46 | 45 | 28 | 89 | 11 | 3 |
| Jacob Webb | TB | mr | 27 | 3.90 | 0 | 1 | 0 | 24 | 0 | 0 | 0 | 30.0 | 27 | 14 | 13 | 16 | 31 | 1 | 2 |
| Logan Webb | Bos | sp | 24 | 5.09 | 11 | 10 | 0 | 33 | 33 | 0 | 0 | 161.0 | 184 | 99 | 91 | 68 | 129 | 23 | 27 |
| Tyler Webb* | NYY | mr | 30 | 3.00 | 2 | 2 | 0 | 44 | 0 | 0 | 0 | 57.0 | 50 | 21 | 19 | 24 | 52 | 10 | 6 |
| Ryan Weber | Cle | mr | 30 | 5.19 | 7 | 9 | 1 | 42 | 17 | 1 | 0 | 140.1 | 139 | 86 | 81 | 48 | 90 | 22 | 23 |
| Jordan Weems | Oak | mr | 28 | 4.91 | 0 | 1 | 0 | 11 | 0 | 0 | 0 | 14.2 | 16 | 10 | 8 | 11 | 14 | 3 | 0 |
| J.B. Wendelken | Was | mr | 28 | 1.00 | 5 | 0 | 4 | 36 | 0 | 0 | 0 | 54.0 | 32 | 6 | 6 | 14 | 51 | 2 | 11 |
| Zack Wheeler | SF | sp | 31 | 2.79 | 16 | 12 | 0 | 33 | 33 | 9 | 4 | 239.0 | 210 | 85 | 74 | 59 | 191 | 10 | 44 |
| Mitch White | Mil | mr | 26 | 3.38 | 1 | 0 | 0 | 5 | 0 | 0 | 0 | 5.1 | 9 | 2 | 2 | 0 | 2 | 0 | 0 |
| Kodi Whitley | Tex | mr | 26 | 5.60 | 1 | 1 | 0 | 21 | 0 | 0 | 0 | 27.1 | 30 | 19 | 17 | 15 | 13 | 5 | 3 |
| Rowan Wick | NYM | mr | 28 | 4.61 | 1 | 3 | 6 | 58 | 0 | 0 | 0 | 70.1 | 97 | 39 | 36 | 29 | 88 | 5 | 4 |
| Taylor Widener | LAD | mr | 26 | 4.13 | 2 | 1 | 1 | 23 | 0 | 0 | 0 | 56.2 | 38 | 28 | 26 | 34 | 62 | 12 | 4 |
| Brad Wieck* | Oak | mr | 29 | 0.00 | 0 | 0 | 0 | 6 | 0 | 0 | 0 | 8.1 | 2 | 0 | 0 | 2 | 5 | 0 | 1 |
| Devin Williams | NYY | mr | 26 | 0.88 | 5 | 0 | 38 | 52 | 0 | 0 | 0 | 61.2 | 17 | 6 | 6 | 19 | 108 | 3 | 2 |
| Taylor Williams | Det | cl | 29 | 4.40 | 0 | 1 | 0 | 14 | 0 | 0 | 0 | 14.1 | 12 | 7 | 7 | 2 | 15 | 1 | 3 |
| Trevor Williams | LAD | sp | 29 | 5.87 | 2 | 3 | 0 | 5 | 5 | 0 | 0 | 23.0 | 29 | 17 | 15 | 14 | 25 | 5 | 3 |
| Bryse Wilson | Ari | mr | 23 | 4.68 | 0 | 4 | 0 | 8 | 5 | 0 | 0 | 32.2 | 33 | 21 | 17 | 20 | 33 | 6 | 4 |
| Justin Wilson* | Mil | mr | 33 | 3.88 | 6 | 4 | 2 | 56 | 0 | 0 | 0 | 69.2 | 62 | 32 | 30 | 36 | 69 | 4 | 8 |
| Dan Winkler | Tex | mr | 31 | 2.67 | 2 | 2 | 12 | 44 | 0 | 0 | 0 | 54.0 | 40 | 16 | 16 | 24 | 56 | 5 | 7 |
| Matt Wisler | Sea | mr | 28 | 2.58 | 7 | 3 | 1 | 54 | 11 | 0 | 0 | 104.2 | 73 | 32 | 30 | 61 | 142 | 10 | 4 |
| Nick Wittgren | Was | mr | 30 | 3.42 | 6 | 1 | 2 | 49 | 0 | 0 | 0 | 76.1 | 65 | 29 | 29 | 14 | 92 | 15 | 4 |
| Asher Wojciechowski | Ari | sp | 32 | 7.35 | 2 | 14 | 0 | 24 | 24 | 0 | 0 | 120.0 | 152 | 105 | 98 | 49 | 93 | 41 | 10 |
| Jake Woodford | Pit | mr | 24 | 6.67 | 0 | 0 | 0 | 15 | 0 | 0 | 0 | 27.0 | 32 | 23 | 20 | 3 | 24 | 9 | 4 |
| Brandon Woodruff | Cin | sp | 28 | 3.28 | 19 | 8 | 0 | 38 | 38 | 1 | 1 | 244.0 | 211 | 96 | 89 | 68 | 324 | 24 | 24 |
| Brandon Workman | Col | cl | 32 | 9.18 | 0 | 1 | 0 | 16 | 0 | 0 | 0 | 16.2 | 34 | 18 | 17 | 9 | 17 | 7 | 2 |
| Kyle Wright | TB | sp | 25 | 4.70 | 5 | 10 | 0 | 25 | 25 | 0 | 0 | 122.2 | 123 | 78 | 64 | 79 | 102 | 25 | 26 |
| Miguel Yajure | LAA | mr | 23 | 5.13 | 3 | 3 | 1 | 13 | 0 | 0 | 0 | 47.1 | 48 | 27 | 27 | 32 | 29 | 5 | 1 |
| Shun Yamaguchi | TB | mr | 33 | 6.81 | 0 | 1 | 0 | 40 | 0 | 0 | 0 | 74.0 | 73 | 59 | 56 | 53 | 75 | 19 | 7 |
| Ryan Yarbrough* | LAA | sp | 29 | 3.55 | 17 | 9 | 0 | 29 | 29 | 1 | 0 | 177.2 | 175 | 78 | 70 | 24 | 125 | 13 | 9 |
| Eric Yardley | Bos | mr | 30 | 3.83 | 4 | 4 | 6 | 45 | 0 | 0 | 0 | 51.2 | 37 | 22 | 22 | 23 | 51 | 4 | 9 |
| Huascar Ynoa | Bos | sp | 23 | 4.99 | 3 | 6 | 0 | 20 | 20 | 0 | 0 | 70.1 | 75 | 51 | 39 | 39 | 53 | 9 | 8 |
| Alex Young* | Atl | mr | 27 | 7.07 | 1 | 5 | 0 | 13 | 12 | 0 | 0 | 56.0 | 77 | 52 | 44 | 31 | 38 | 18 | 8 |
| T.J. Zeuch | Atl | mr | 25 | 10.47 | 0 | 2 | 0 | 6 | 2 | 0 | 0 | 16.1 | 25 | 20 | 19 | 11 | 8 | 4 | 3 |
| Kyle Zimmer | ChW | mr | 29 | 1.94 | 6 | 2 | 24 | 47 | 0 | 0 | 0 | 65.0 | 42 | 15 | 14 | 26 | 68 | 0 | 5 |
| Bruce Zimmermann* | StL | sp | 26 | 5.51 | 0 | 3 | 0 | 6 | 3 | 0 | 0 | 16.1 | 15 | 17 | 10 | 12 | 12 | 2 | 1 |
| Jordan Zimmermann | Cle | sp | 35 | 7.47 | 2 | 4 | 0 | 6 | 6 | 1 | 0 | 31.1 | 51 | 28 | 26 | 12 | 25 | 4 | 5 |
| Tyler Zuber | Atl | mr | 26 | 5.35 | 3 | 5 | 1 | 69 | 0 | 0 | 0 | 79.0 | 51 | 50 | 47 | 80 | 107 | 18 | 8 |
| Secondary |
| Name | Team | P | Age | SB | CS | IW | HBP | WP | BK | SH | SF | H/9 | BB/9 | R/9 | K/9 | HR/9 | K/BB | WHIP |
| Bryan Abreu | Hou | mr | 24 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 12.0 | 3.0 | 15.0 | 3.0 | 0.0 | 1.0 | 1.67 |
| Jason Adam | Tor | mr | 29 | 0 | 1 | 0 | 2 | 1 | 1 | 0 | 0 | 8.6 | 3.8 | 12.8 | 14.0 | 1.9 | 3.7 | 1.37 |
| Austin Adams | LAA | mr | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10.8 | 10.8 | 21.6 | 21.6 | 0.0 | 2.0 | 2.40 |
| Keegan Akin* | Min | sp | 26 | 0 | 1 | 2 | 3 | 1 | 1 | 1 | 0 | 7.6 | 4.1 | 12.0 | 10.8 | 0.7 | 2.7 | 1.30 |
| Jorge Alcala | Col | mr | 25 | 2 | 0 | 3 | 0 | 1 | 0 | 0 | 5 | 9.9 | 3.8 | 13.7 | 9.7 | 0.7 | 2.6 | 1.53 |
| Sandy Alcantara | SD | sp | 25 | 1 | 2 | 3 | 6 | 1 | 0 | 0 | 0 | 8.2 | 4.2 | 13.0 | 9.9 | 1.5 | 2.3 | 1.38 |
| Scott Alexander* | LAD | mr | 31 | 2 | 3 | 3 | 0 | 0 | 0 | 1 | 2 | 9.6 | 5.6 | 15.3 | 4.9 | 0.7 | 0.9 | 1.70 |
| Tyler Alexander* | LAD | mr | 26 | 1 | 0 | 1 | 6 | 1 | 0 | 0 | 0 | 9.7 | 2.4 | 13.5 | 9.3 | 1.1 | 3.8 | 1.35 |
| Kolby Allard* | Min | sp | 23 | 3 | 4 | 4 | 7 | 4 | 1 | 2 | 5 | 9.7 | 5.5 | 15.7 | 6.6 | 1.1 | 1.2 | 1.69 |
| Yency Almonte | Mia | mr | 27 | 4 | 2 | 1 | 16 | 1 | 0 | 0 | 1 | 6.9 | 1.8 | 10.3 | 8.1 | 0.6 | 4.4 | 0.97 |
| Dan Altavilla | Tex | mr | 28 | 8 | 0 | 4 | 3 | 7 | 0 | 1 | 3 | 10.8 | 5.8 | 17.0 | 9.8 | 1.0 | 1.7 | 1.84 |
| Jose Alvarado* | Pit | mr | 26 | 1 | 0 | 1 | 3 | 1 | 0 | 1 | 1 | 11.7 | 3.6 | 17.5 | 11.7 | 0.7 | 3.2 | 1.70 |
| Jose Alvarez* | Cin | mr | 32 | 1 | 0 | 1 | 0 | 1 | 2 | 0 | 0 | 5.3 | 3.0 | 8.3 | 9.0 | 0.8 | 3.0 | 0.92 |
| Adbert Alzolay | ChC | sp | 26 | 6 | 2 | 2 | 1 | 2 | 0 | 0 | 0 | 4.4 | 4.4 | 8.9 | 14.2 | 0.5 | 3.2 | 0.97 |
| Brett Anderson* | TB | sp | 33 | 0 | 1 | 7 | 12 | 2 | 0 | 0 | 2 | 11.6 | 2.1 | 14.3 | 6.8 | 1.7 | 3.3 | 1.52 |
| Chase Anderson | TB | sp | 33 | 2 | 1 | 4 | 7 | 4 | 1 | 0 | 5 | 12.6 | 2.3 | 15.4 | 9.9 | 2.9 | 4.4 | 1.66 |
| Ian Anderson | SF | sp | 23 | 4 | 1 | 0 | 6 | 10 | 1 | 0 | 1 | 6.2 | 3.1 | 9.7 | 10.2 | 0.7 | 3.3 | 1.03 |
| Nick Anderson | SD | cl | 30 | 0 | 1 | 0 | 1 | 1 | 0 | 1 | 0 | 3.8 | 2.0 | 5.9 | 12.9 | 0.3 | 6.4 | 0.64 |
| Shaun Anderson | SF | mr | 26 | 1 | 1 | 0 | 2 | 2 | 0 | 0 | 1 | 7.4 | 5.2 | 13.0 | 11.1 | 1.4 | 2.2 | 1.40 |
| Tyler Anderson* | Oak | sp | 31 | 8 | 3 | 7 | 14 | 1 | 0 | 2 | 5 | 9.3 | 3.9 | 14.1 | 6.7 | 1.0 | 1.7 | 1.47 |
| Matt Andriese | SF | mr | 31 | 6 | 0 | 4 | 0 | 1 | 0 | 0 | 1 | 6.1 | 3.6 | 9.7 | 9.6 | 1.7 | 2.7 | 1.08 |
| Tejay Antone | ChW | mr | 27 | 9 | 3 | 4 | 1 | 2 | 0 | 1 | 1 | 4.7 | 4.3 | 9.1 | 10.8 | 1.0 | 2.5 | 1.01 |
| Shawn Armstrong | Hou | mr | 30 | 1 | 1 | 0 | 2 | 2 | 0 | 0 | 0 | 6.7 | 2.5 | 9.8 | 7.7 | 0.4 | 3.1 | 1.01 |
| Shawn Armstrong | Mil | mr | 30 | 1 | 1 | 0 | 2 | 5 | 0 | 0 | 0 | 5.9 | 2.7 | 9.6 | 10.1 | 0.9 | 3.7 | 0.97 |
| Shawn Armstrong |   | mr | 30 | 2 | 2 | 0 | 4 | 7 | 0 | 0 | 0 | 6.4 | 2.6 | 9.7 | 8.7 | 0.6 | 3.4 | 0.99 |
| Jake Arrieta | KC | sp | 35 | 9 | 4 | 3 | 4 | 15 | 1 | 0 | 3 | 12.1 | 4.4 | 16.7 | 7.0 | 1.6 | 1.6 | 1.83 |
| Luis Avilan* | LAD | mr | 31 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.5 | 2.3 | 6.8 | 4.5 | 0.0 | 2.0 | 0.75 |
| Dakota Bacus | Cin | mr | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12.0 | 3.0 | 15.0 | 3.0 | 0.0 | 1.0 | 1.67 |
| Dakota Bacus | Cle | mr | 30 | 2 | 0 | 1 | 2 | 0 | 0 | 0 | 4 | 13.0 | 6.5 | 20.2 | 4.6 | 2.0 | 0.7 | 2.17 |
| Dakota Bacus |   | mr | 30 | 2 | 0 | 1 | 2 | 0 | 0 | 0 | 4 | 12.9 | 6.2 | 19.7 | 4.4 | 1.8 | 0.7 | 2.12 |
| Pedro Baez | Col | mr | 33 | 1 | 1 | 0 | 1 | 1 | 0 | 0 | 1 | 7.6 | 4.1 | 11.9 | 7.0 | 1.0 | 1.7 | 1.31 |
| Brandon Bailey | Min | mr | 26 | 1 | 0 | 1 | 3 | 7 | 0 | 0 | 2 | 6.4 | 4.9 | 12.4 | 5.3 | 1.5 | 1.1 | 1.25 |
| Homer Bailey | SF | sp | 35 | 1 | 0 | 0 | 3 | 3 | 0 | 0 | 2 | 12.7 | 6.0 | 19.7 | 8.0 | 1.0 | 1.3 | 2.07 |
| Caleb Baragar* | Det | mr | 27 | 3 | 1 | 2 | 2 | 5 | 0 | 2 | 3 | 5.7 | 2.2 | 8.0 | 6.3 | 0.9 | 2.9 | 0.87 |
| Daniel Bard | NYY | cl | 36 | 4 | 1 | 1 | 9 | 0 | 0 | 0 | 1 | 5.8 | 3.2 | 10.1 | 10.1 | 0.5 | 3.1 | 1.00 |
| Scott Barlow | Bos | mr | 28 | 6 | 1 | 1 | 5 | 6 | 0 | 1 | 1 | 8.1 | 2.7 | 11.3 | 13.2 | 1.3 | 4.9 | 1.20 |
| Jacob Barnes | Was | mr | 31 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12.1 | 2.7 | 14.8 | 13.5 | 1.3 | 5.0 | 1.65 |
| Matt Barnes | Min | cl | 31 | 3 | 2 | 0 | 8 | 5 | 0 | 0 | 0 | 5.6 | 3.6 | 10.1 | 10.6 | 1.2 | 2.9 | 1.02 |
| Jaime Barria | Atl | sp | 24 | 2 | 1 | 5 | 4 | 2 | 0 | 0 | 1 | 5.5 | 2.7 | 8.6 | 6.9 | 0.9 | 2.5 | 0.92 |
| Tyler Bashlor | Phi | mr | 28 | 0 | 0 | 0 | 4 | 1 | 0 | 0 | 3 | 14.9 | 5.0 | 22.0 | 5.0 | 2.8 | 1.0 | 2.20 |
| Anthony Bass | Mil | cl | 33 | 1 | 1 | 0 | 5 | 1 | 1 | 1 | 1 | 4.6 | 1.6 | 6.5 | 7.3 | 0.7 | 4.6 | 0.68 |
| Chris Bassitt | Was | sp | 32 | 6 | 4 | 8 | 7 | 2 | 0 | 1 | 5 | 8.5 | 2.5 | 11.3 | 7.6 | 1.3 | 3.1 | 1.22 |
| Trevor Bauer | Det | sp | 30 | 12 | 4 | 1 | 11 | 6 | 0 | 1 | 6 | 5.4 | 2.1 | 7.9 | 12.5 | 1.0 | 6.0 | 0.83 |
| Cam Bedrosian | Ari | mr | 29 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 4 | 6.7 | 3.6 | 10.5 | 7.2 | 0.6 | 2.0 | 1.14 |
| Jalen Beeks* | Bos | mr | 27 | 1 | 0 | 5 | 3 | 7 | 0 | 0 | 2 | 10.9 | 1.7 | 13.0 | 11.3 | 0.3 | 6.6 | 1.40 |
| Wes Benjamin* | Mia | mr | 27 | 1 | 0 | 2 | 1 | 1 | 0 | 0 | 0 | 7.9 | 3.9 | 12.0 | 6.7 | 0.4 | 1.7 | 1.31 |
| Travis Bergen* | Mia | mr | 27 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0.0 | 9.0 | 9.0 | 0.0 | 0.0 | 0.0 | 1.00 |
| Jose Berrios | Cin | sp | 27 | 4 | 3 | 2 | 11 | 17 | 0 | 2 | 3 | 9.6 | 4.3 | 14.3 | 10.6 | 1.8 | 2.5 | 1.53 |
| Dellin Betances | Oak | mr | 33 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10.3 | 7.7 | 18.0 | 15.4 | 0.0 | 2.0 | 2.00 |
| Joe Biagini | Tor | mr | 31 | 0 | 0 | 3 | 1 | 1 | 0 | 0 | 0 | 17.7 | 9.3 | 27.9 | 5.6 | 0.9 | 0.6 | 3.00 |
| Shane Bieber | Col | sp | 26 | 1 | 2 | 0 | 5 | 7 | 0 | 1 | 3 | 6.1 | 2.9 | 9.2 | 14.8 | 1.2 | 5.2 | 1.00 |
| Brandon Bielak | Cle | sp | 25 | 11 | 6 | 0 | 12 | 2 | 0 | 0 | 4 | 12.6 | 5.6 | 19.4 | 7.1 | 3.2 | 1.3 | 2.02 |
| Ray Black | ChW | mr | 31 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 8.4 | 4.7 | 13.0 | 7.4 | 0.0 | 1.6 | 1.45 |
| Richard Bleier* | TB | mr | 34 | 0 | 0 | 2 | 3 | 11 | 1 | 1 | 0 | 6.5 | 2.3 | 9.2 | 4.7 | 0.2 | 2.1 | 0.97 |
| Scott Blewett | Tex | mr | 25 | 1 | 0 | 2 | 0 | 2 | 0 | 0 | 3 | 11.2 | 5.6 | 16.8 | 7.1 | 1.5 | 1.3 | 1.87 |
| Ryan Borucki* | Min | mr | 27 | 2 | 0 | 3 | 2 | 0 | 0 | 1 | 0 | 6.2 | 6.2 | 12.8 | 11.0 | 0.0 | 1.8 | 1.37 |
| Brad Boxberger | Tex | mr | 33 | 6 | 0 | 0 | 6 | 3 | 1 | 1 | 6 | 9.8 | 4.8 | 15.3 | 8.7 | 2.4 | 1.8 | 1.62 |
| Matthew Boyd* | LAA | sp | 30 | 4 | 1 | 8 | 5 | 12 | 0 | 2 | 3 | 11.3 | 4.2 | 15.9 | 7.9 | 2.7 | 1.9 | 1.72 |
| Brad Brach | Phi | mr | 35 | 1 | 2 | 3 | 8 | 7 | 0 | 1 | 2 | 6.1 | 6.8 | 14.4 | 10.1 | 0.5 | 1.5 | 1.44 |
| Archie Bradley | Was | cl | 28 | 4 | 1 | 1 | 4 | 0 | 0 | 0 | 0 | 11.8 | 2.3 | 14.8 | 8.9 | 1.0 | 3.8 | 1.56 |
| Ryan Brasier | StL | mr | 33 | 0 | 0 | 1 | 1 | 5 | 0 | 0 | 0 | 9.3 | 4.8 | 14.3 | 11.0 | 1.2 | 2.3 | 1.57 |
| Steven Brault* | Mil | sp | 29 | 7 | 0 | 6 | 17 | 14 | 0 | 2 | 5 | 7.6 | 4.8 | 13.5 | 9.2 | 0.2 | 1.9 | 1.38 |
| Ben Braymer* | ChW | mr | 27 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 2 | 10.2 | 4.7 | 15.0 | 8.8 | 0.4 | 1.8 | 1.66 |
| Colten Brewer | Tor | mr | 28 | 3 | 3 | 2 | 5 | 3 | 1 | 0 | 2 | 9.7 | 4.2 | 14.5 | 7.5 | 2.0 | 1.8 | 1.55 |
| Austin Brice | SF | mr | 29 | 4 | 1 | 0 | 3 | 3 | 0 | 0 | 3 | 8.5 | 5.9 | 15.1 | 10.5 | 1.6 | 1.8 | 1.60 |
| Zack Britton* | Oak | cl | 33 | 3 | 0 | 3 | 2 | 10 | 1 | 0 | 1 | 4.1 | 4.9 | 9.4 | 6.1 | 0.2 | 1.3 | 1.01 |
| Connor Brogdon | Pit | mr | 26 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.5 | 1.4 | 8.0 | 10.5 | 2.3 | 7.4 | 0.88 |
| JT Brubaker | Mia | sp | 27 | 4 | 1 | 3 | 4 | 6 | 0 | 0 | 4 | 7.9 | 3.2 | 11.4 | 9.5 | 1.5 | 2.9 | 1.23 |
| Kris Bubic* | Atl | sp | 23 | 3 | 4 | 2 | 5 | 1 | 0 | 3 | 2 | 9.5 | 3.5 | 13.3 | 8.7 | 1.2 | 2.5 | 1.44 |
| Walker Buehler | Was | sp | 26 | 3 | 2 | 2 | 3 | 6 | 0 | 0 | 1 | 5.3 | 2.6 | 8.0 | 10.2 | 1.4 | 3.9 | 0.87 |
| Madison Bumgarner* | LAA | sp | 31 | 2 | 0 | 0 | 8 | 1 | 0 | 0 | 1 | 10.4 | 1.7 | 13.1 | 5.5 | 2.5 | 3.2 | 1.34 |
| Aaron Bummer* | ChC | mr | 27 | 0 | 1 | 0 | 0 | 2 | 0 | 1 | 0 | 7.6 | 5.0 | 12.6 | 12.3 | 0.3 | 2.5 | 1.40 |
| Dylan Bundy | NYY | sp | 28 | 5 | 6 | 7 | 13 | 7 | 0 | 2 | 4 | 6.7 | 2.3 | 9.5 | 10.9 | 0.8 | 4.8 | 1.00 |
| Corbin Burnes | NYY | sp | 26 | 8 | 0 | 7 | 8 | 10 | 1 | 0 | 3 | 4.7 | 3.4 | 8.5 | 13.8 | 0.2 | 4.0 | 0.91 |
| Ty Buttrey | NYM | mr | 28 | 4 | 0 | 2 | 1 | 4 | 0 | 1 | 4 | 8.4 | 2.3 | 10.8 | 7.6 | 0.7 | 3.4 | 1.19 |
| Genesis Cabrera* | Oak | mr | 24 | 5 | 3 | 2 | 8 | 4 | 0 | 0 | 1 | 5.1 | 6.6 | 13.0 | 12.8 | 1.1 | 1.9 | 1.31 |
| Trevor Cahill | Bal | sp | 33 | 5 | 2 | 0 | 7 | 1 | 0 | 0 | 0 | 5.0 | 5.4 | 11.1 | 12.1 | 1.3 | 2.3 | 1.16 |
| Griffin Canning | TB | sp | 25 | 6 | 3 | 2 | 4 | 11 | 0 | 1 | 8 | 9.9 | 4.4 | 14.4 | 9.6 | 1.3 | 2.2 | 1.58 |
| Carlos Carrasco | StL | sp | 34 | 3 | 1 | 2 | 11 | 13 | 0 | 3 | 3 | 8.3 | 3.2 | 12.0 | 11.5 | 1.3 | 3.5 | 1.28 |
| Daniel Castano* | Cle | sp | 26 | 7 | 2 | 1 | 4 | 4 | 1 | 0 | 1 | 11.5 | 4.0 | 15.9 | 3.7 | 1.3 | 0.9 | 1.73 |
| Ryan Castellani | Atl | sp | 25 | 6 | 3 | 4 | 20 | 4 | 1 | 1 | 5 | 7.7 | 4.7 | 13.6 | 5.8 | 1.9 | 1.2 | 1.38 |
| Humberto Castellanos | Pit | mr | 23 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 18.7 | 10.4 | 30.1 | 11.4 | 4.2 | 1.1 | 3.23 |
| Diego Castillo | Cin | mr | 27 | 2 | 0 | 1 | 8 | 1 | 0 | 0 | 0 | 4.3 | 4.9 | 10.0 | 9.1 | 0.6 | 1.9 | 1.03 |
| Luis Castillo | Phi | sp | 28 | 4 | 2 | 4 | 5 | 1 | 0 | 0 | 6 | 8.1 | 2.8 | 11.2 | 12.2 | 0.9 | 4.3 | 1.22 |
| Miguel Castro | Sea | mr | 26 | 6 | 2 | 2 | 3 | 3 | 0 | 0 | 0 | 9.7 | 3.7 | 13.9 | 10.9 | 0.7 | 3.0 | 1.49 |
| Dylan Cease | SD | sp | 25 | 3 | 0 | 2 | 10 | 0 | 0 | 1 | 1 | 7.2 | 4.0 | 12.3 | 6.6 | 2.0 | 1.6 | 1.24 |
| Blake Cederlind | Oak | mr | 25 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 15.2 | 5.1 | 20.3 | 5.1 | 1.7 | 1.0 | 2.25 |
| Luis Cessa | SD | mr | 29 | 0 | 0 | 5 | 2 | 7 | 1 | 0 | 2 | 11.4 | 2.5 | 14.2 | 8.2 | 1.5 | 3.3 | 1.54 |
| Andrew Chafin* | Phi | mr | 31 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 11.6 | 4.1 | 15.7 | 7.4 | 3.0 | 1.8 | 1.74 |
| Aroldis Chapman* | Tor | mr | 33 | 3 | 0 | 0 | 1 | 1 | 2 | 0 | 0 | 9.0 | 2.0 | 11.3 | 15.0 | 2.3 | 7.5 | 1.22 |
| Tyler Chatwood | SF | sp | 31 | 2 | 1 | 0 | 3 | 3 | 1 | 0 | 3 | 12.0 | 5.7 | 18.1 | 12.8 | 0.8 | 2.2 | 1.97 |
| Jesse Chavez | Ari | mr | 37 | 1 | 1 | 0 | 5 | 1 | 0 | 0 | 7 | 11.6 | 4.7 | 17.0 | 8.5 | 2.8 | 1.8 | 1.82 |
| Yonny Chirinos | Det | sp | 27 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 11.3 | 4.4 | 16.2 | 8.8 | 0.5 | 2.0 | 1.75 |
| Adam Cimber | Tex | mr | 30 | 1 | 2 | 1 | 2 | 2 | 0 | 0 | 2 | 11.3 | 3.7 | 15.4 | 5.6 | 1.0 | 1.5 | 1.67 |
| Steve Cishek | Cin | mr | 35 | 1 | 0 | 0 | 6 | 2 | 0 | 0 | 0 | 11.0 | 6.1 | 19.4 | 11.0 | 1.5 | 1.8 | 1.90 |
| Jose Cisnero | LAA | mr | 32 | 3 | 4 | 3 | 11 | 1 | 0 | 1 | 2 | 6.9 | 3.3 | 11.3 | 10.3 | 0.4 | 3.1 | 1.13 |
| Aaron Civale | Cle | sp | 26 | 9 | 3 | 4 | 9 | 0 | 2 | 3 | 5 | 13.2 | 2.3 | 15.9 | 8.8 | 1.5 | 3.9 | 1.72 |
| Taylor Clarke | Tor | mr | 28 | 1 | 3 | 2 | 2 | 0 | 0 | 0 | 0 | 7.8 | 3.5 | 11.4 | 9.1 | 1.6 | 2.6 | 1.25 |
| Alex Claudio* | Cin | mr | 29 | 0 | 1 | 0 | 1 | 3 | 0 | 0 | 0 | 9.7 | 3.0 | 13.1 | 7.2 | 1.7 | 2.4 | 1.41 |
| Alex Claudio* | Cle | mr | 29 | 1 | 1 | 3 | 0 | 3 | 0 | 0 | 2 | 5.6 | 3.4 | 9.0 | 6.8 | 0.7 | 2.0 | 1.00 |
| Alex Claudio* |   | mr | 29 | 1 | 2 | 3 | 1 | 6 | 0 | 0 | 2 | 6.8 | 3.3 | 10.2 | 6.9 | 1.0 | 2.1 | 1.12 |
| Mike Clevinger | Phi | sp | 30 | 8 | 2 | 0 | 4 | 8 | 0 | 1 | 4 | 8.1 | 3.5 | 11.7 | 9.8 | 1.0 | 2.8 | 1.28 |
| Tyler Clippard | Oak | mr | 36 | 5 | 0 | 0 | 5 | 3 | 0 | 0 | 2 | 7.2 | 2.2 | 10.1 | 9.9 | 1.3 | 4.5 | 1.05 |
| Alex Cobb | Bal | sp | 33 | 2 | 3 | 5 | 7 | 3 | 0 | 1 | 1 | 9.4 | 3.0 | 12.7 | 5.3 | 1.2 | 1.8 | 1.37 |
| Kyle Cody | Det | sp | 26 | 10 | 1 | 1 | 1 | 12 | 1 | 0 | 1 | 5.9 | 5.4 | 11.4 | 8.2 | 0.2 | 1.5 | 1.25 |
| A.J. Cole | Tor | mr | 29 | 1 | 0 | 0 | 2 | 5 | 1 | 0 | 5 | 9.0 | 2.5 | 11.7 | 7.5 | 1.2 | 3.1 | 1.27 |
| Gerrit Cole | Col | sp | 30 | 2 | 2 | 1 | 6 | 4 | 0 | 0 | 3 | 7.0 | 2.2 | 9.5 | 12.3 | 2.2 | 5.5 | 1.02 |
| Alex Colome | Min | cl | 32 | 2 | 0 | 1 | 0 | 1 | 0 | 0 | 2 | 5.9 | 4.9 | 10.7 | 7.1 | 0.0 | 1.5 | 1.19 |
| Sam Coonrod | SF | mr | 28 | 0 | 0 | 5 | 8 | 7 | 0 | 0 | 1 | 10.2 | 4.7 | 16.1 | 10.2 | 1.8 | 2.2 | 1.65 |
| Patrick Corbin* | Atl | sp | 31 | 3 | 4 | 6 | 2 | 0 | 7 | 2 | 2 | 12.0 | 2.7 | 14.8 | 7.6 | 1.6 | 2.8 | 1.64 |
| Jimmy Cordero | Phi | mr | 29 | 2 | 2 | 1 | 2 | 5 | 0 | 1 | 2 | 13.5 | 3.6 | 17.7 | 3.6 | 0.5 | 1.0 | 1.90 |
| Dylan Covey | Min | mr | 29 | 2 | 0 | 1 | 4 | 6 | 0 | 0 | 1 | 9.9 | 2.6 | 13.2 | 7.5 | 1.6 | 2.9 | 1.39 |
| Stefan Crichton | Mil | mr | 29 | 1 | 0 | 2 | 13 | 4 | 0 | 0 | 0 | 5.9 | 1.7 | 8.7 | 7.9 | 0.4 | 4.8 | 0.84 |
| Kyle Crick | Bal | mr | 28 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 20.3 | 0.0 | 20.3 | 0.0 | 0.0 | 0.0 | 2.25 |
| Garrett Crochet* | StL | mr | 22 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 3.4 | 3.4 | 10.1 | 3.4 | 0.0 | 1.0 | 0.75 |
| Wil Crowe | Tex | sp | 26 | 1 | 0 | 2 | 0 | 0 | 0 | 0 | 2 | 25.5 | 10.0 | 35.5 | 6.2 | 6.2 | 0.6 | 3.94 |
| Johnny Cueto | Oak | sp | 35 | 7 | 2 | 1 | 8 | 3 | 1 | 0 | 4 | 7.5 | 4.0 | 11.8 | 8.3 | 1.0 | 2.1 | 1.27 |
| John Curtiss | Bal | mr | 28 | 5 | 0 | 3 | 7 | 0 | 1 | 0 | 0 | 8.3 | 2.2 | 11.2 | 9.0 | 1.1 | 4.1 | 1.16 |
| Yu Darvish | LAA | sp | 34 | 11 | 2 | 5 | 3 | 6 | 0 | 2 | 3 | 7.0 | 2.0 | 9.1 | 12.0 | 0.7 | 6.0 | 1.00 |
| Zach Davies | Pit | sp | 28 | 3 | 4 | 0 | 8 | 6 | 0 | 2 | 7 | 8.6 | 2.8 | 11.7 | 8.8 | 1.3 | 3.2 | 1.27 |
| Wade Davis | Col | cl | 35 | 1 | 0 | 0 | 0 | 3 | 1 | 0 | 0 | 17.7 | 2.3 | 20.1 | 5.4 | 4.6 | 2.3 | 2.23 |
| Grant Dayton* | Atl | mr | 33 | 0 | 0 | 6 | 5 | 1 | 0 | 0 | 3 | 6.6 | 3.9 | 11.0 | 8.9 | 1.5 | 2.3 | 1.17 |
| Chase De Jong | Col | sp | 27 | 1 | 0 | 1 | 2 | 0 | 0 | 0 | 0 | 15.5 | 6.6 | 23.0 | 10.2 | 2.2 | 1.5 | 2.46 |
| Jacob deGrom | LAD | sp | 33 | 8 | 7 | 1 | 1 | 4 | 0 | 0 | 3 | 5.5 | 2.9 | 8.4 | 13.6 | 0.9 | 4.8 | 0.93 |
| Anthony DeSclafani | Min | sp | 31 | 1 | 2 | 3 | 2 | 3 | 0 | 0 | 4 | 8.8 | 5.4 | 14.4 | 8.1 | 1.0 | 1.5 | 1.57 |
| Ross Detwiler* | NYM | mr | 35 | 1 | 1 | 5 | 2 | 1 | 0 | 1 | 2 | 10.3 | 3.0 | 13.6 | 7.6 | 0.5 | 2.6 | 1.47 |
| Chris Devenski | KC | mr | 30 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 12.3 | 7.4 | 19.6 | 11.0 | 0.0 | 1.5 | 2.18 |
| Edwin Diaz | NYY | mr | 27 | 4 | 0 | 0 | 4 | 0 | 0 | 0 | 1 | 6.8 | 4.5 | 11.9 | 15.7 | 1.8 | 3.5 | 1.26 |
| Jairo Diaz | LAD | mr | 30 | 0 | 0 | 0 | 1 | 4 | 0 | 0 | 1 | 13.9 | 5.7 | 20.0 | 7.0 | 1.6 | 1.2 | 2.18 |
| Jake Diekman* | Sea | mr | 34 | 1 | 1 | 1 | 3 | 2 | 1 | 1 | 1 | 4.2 | 5.1 | 9.7 | 12.5 | 0.1 | 2.5 | 1.03 |
| Randy Dobnak | Oak | sp | 26 | 5 | 2 | 1 | 8 | 0 | 0 | 2 | 2 | 8.6 | 2.1 | 11.2 | 5.5 | 0.6 | 2.7 | 1.19 |
| Rafael Dolis | LAA | mr | 33 | 4 | 1 | 0 | 7 | 7 | 0 | 0 | 1 | 3.9 | 5.0 | 9.7 | 10.3 | 0.1 | 2.0 | 0.99 |
| Sean Doolittle* | Cle | mr | 34 | 0 | 0 | 1 | 3 | 0 | 0 | 0 | 3 | 12.5 | 2.9 | 16.0 | 5.5 | 2.7 | 1.9 | 1.72 |
| Tommy Doyle | Tor | mr | 25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14.2 | 2.8 | 17.1 | 8.5 | 1.4 | 3.0 | 1.89 |
| Oliver Drake | LAA | mr | 34 | 2 | 1 | 1 | 0 | 3 | 0 | 0 | 3 | 6.1 | 3.9 | 10.0 | 7.7 | 0.9 | 2.0 | 1.11 |
| Tyler Duffey | TB | mr | 30 | 0 | 0 | 0 | 2 | 1 | 0 | 0 | 1 | 5.7 | 3.2 | 9.2 | 13.2 | 0.7 | 4.1 | 1.00 |
| Danny Duffy* | NYY | sp | 32 | 3 | 1 | 10 | 11 | 10 | 0 | 2 | 1 | 7.0 | 3.2 | 10.7 | 8.9 | 1.1 | 2.8 | 1.13 |
| Robert Dugger | KC | mr | 25 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 20.8 | 3.1 | 24.7 | 5.4 | 2.3 | 1.8 | 2.66 |
| Justin Dunn | Hou | sp | 25 | 8 | 3 | 5 | 6 | 2 | 0 | 1 | 2 | 6.3 | 5.2 | 11.8 | 8.0 | 1.8 | 1.5 | 1.28 |
| Dane Dunning | NYM | sp | 26 | 7 | 6 | 9 | 5 | 9 | 1 | 2 | 3 | 6.2 | 4.2 | 10.8 | 9.2 | 0.6 | 2.2 | 1.16 |
| Carl Edwards | Bal | mr | 29 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 7.7 | 3.9 | 11.6 | 5.8 | 0.0 | 1.5 | 1.29 |
| Zach Eflin | Mia | sp | 27 | 6 | 1 | 4 | 4 | 3 | 0 | 1 | 4 | 7.4 | 2.7 | 10.3 | 12.2 | 1.4 | 4.5 | 1.12 |
| Seth Elledge | Tex | mr | 25 | 3 | 1 | 4 | 3 | 9 | 0 | 0 | 0 | 14.9 | 10.2 | 25.9 | 11.3 | 1.1 | 1.1 | 2.79 |
| Nathan Eovaldi | ChW | sp | 31 | 3 | 0 | 0 | 9 | 5 | 0 | 1 | 3 | 11.2 | 1.6 | 13.4 | 9.8 | 1.8 | 6.3 | 1.42 |
| Robbie Erlin* | NYM | sp | 30 | 3 | 1 | 1 | 6 | 1 | 0 | 1 | 5 | 10.4 | 2.4 | 13.3 | 7.7 | 2.6 | 3.2 | 1.42 |
| Thomas Eshelman | Tex | mr | 27 | 1 | 4 | 2 | 1 | 4 | 0 | 0 | 2 | 10.6 | 4.8 | 15.6 | 5.1 | 1.9 | 1.1 | 1.71 |
| Carlos Estevez | Phi | mr | 28 | 1 | 0 | 0 | 4 | 5 | 0 | 0 | 1 | 12.5 | 3.8 | 17.0 | 10.6 | 2.1 | 2.8 | 1.81 |
| Pete Fairbanks | Det | mr | 27 | 6 | 3 | 3 | 5 | 8 | 0 | 0 | 2 | 7.2 | 6.0 | 13.8 | 12.5 | 0.5 | 2.1 | 1.46 |
| Jeurys Familia | Was | mr | 31 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 8.0 | 2.5 | 11.0 | 7.4 | 1.2 | 3.0 | 1.16 |
| Buck Farmer | Min | mr | 30 | 1 | 2 | 2 | 2 | 6 | 1 | 0 | 1 | 8.3 | 2.3 | 11.0 | 8.0 | 0.8 | 3.4 | 1.19 |
| Erick Fedde | Sea | sp | 28 | 14 | 6 | 1 | 13 | 2 | 0 | 0 | 1 | 6.1 | 4.0 | 10.9 | 5.3 | 1.4 | 1.3 | 1.12 |
| Caleb Ferguson* | Was | mr | 24 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 8.5 | 1.3 | 10.0 | 9.4 | 1.9 | 7.3 | 1.09 |
| J.P. Feyereisen | LAA | mr | 28 | 0 | 1 | 0 | 3 | 3 | 0 | 0 | 2 | 6.0 | 4.2 | 10.8 | 7.4 | 1.8 | 1.8 | 1.13 |
| Mike Fiers | SD | sp | 36 | 13 | 5 | 2 | 13 | 5 | 1 | 1 | 6 | 10.9 | 2.8 | 14.4 | 5.8 | 1.5 | 2.1 | 1.53 |
| Kyle Finnegan | Col | mr | 29 | 4 | 0 | 0 | 5 | 4 | 0 | 2 | 4 | 6.8 | 4.5 | 11.8 | 9.6 | 0.7 | 2.1 | 1.26 |
| Jack Flaherty | Det | sp | 25 | 5 | 3 | 7 | 8 | 5 | 0 | 1 | 2 | 7.5 | 4.0 | 11.9 | 10.6 | 0.9 | 2.7 | 1.27 |
| Josh Fleming* | Mia | sp | 25 | 0 | 0 | 0 | 2 | 0 | 0 | 1 | 1 | 8.7 | 2.3 | 11.1 | 6.2 | 0.9 | 2.7 | 1.22 |
| Dylan Floro | Min | mr | 30 | 1 | 1 | 1 | 1 | 2 | 0 | 1 | 3 | 9.6 | 1.7 | 11.4 | 9.2 | 0.7 | 5.5 | 1.26 |
| Wilmer Font | Ari | mr | 31 | 6 | 2 | 0 | 4 | 2 | 0 | 0 | 5 | 13.4 | 7.2 | 21.1 | 8.8 | 1.2 | 1.2 | 2.29 |
| Matt Foster | Was | mr | 26 | 1 | 0 | 3 | 0 | 0 | 0 | 0 | 2 | 5.8 | 3.4 | 9.1 | 10.2 | 0.7 | 3.0 | 1.01 |
| Kyle Freeland* | ChW | sp | 28 | 9 | 2 | 0 | 10 | 0 | 0 | 0 | 6 | 8.6 | 3.1 | 12.2 | 6.1 | 0.8 | 2.0 | 1.31 |
| Sam Freeman* | Sea | mr | 34 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 6.8 | 4.5 | 11.3 | 6.8 | 0.8 | 1.5 | 1.25 |
| Max Fried* | Oak | sp | 27 | 7 | 1 | 5 | 13 | 2 | 4 | 0 | 5 | 6.6 | 3.2 | 10.4 | 9.6 | 0.6 | 3.0 | 1.09 |
| Jace Fry* | Cle | mr | 27 | 2 | 0 | 2 | 0 | 3 | 0 | 0 | 2 | 8.2 | 3.9 | 12.1 | 10.6 | 2.7 | 2.7 | 1.34 |
| Paul Fry* | Oak | mr | 28 | 0 | 0 | 0 | 1 | 3 | 0 | 0 | 0 | 2.0 | 2.8 | 5.2 | 11.5 | 0.0 | 4.1 | 0.53 |
| Carson Fulmer | SD | mr | 27 | 1 | 0 | 0 | 2 | 1 | 0 | 0 | 1 | 8.3 | 3.0 | 12.8 | 7.5 | 0.8 | 2.5 | 1.25 |
| Michael Fulmer | Tex | sp | 28 | 5 | 2 | 0 | 9 | 2 | 0 | 1 | 4 | 17.2 | 3.1 | 21.0 | 6.0 | 2.8 | 1.9 | 2.25 |
| Giovanny Gallegos | Hou | mr | 29 | 3 | 0 | 1 | 0 | 4 | 0 | 0 | 0 | 4.8 | 3.2 | 8.0 | 12.7 | 1.4 | 4.0 | 0.89 |
| Zac Gallen | Ari | sp | 25 | 27 | 6 | 4 | 9 | 6 | 0 | 1 | 2 | 8.0 | 4.0 | 12.3 | 10.7 | 1.3 | 2.7 | 1.33 |
| John Gant | ChC | mr | 28 | 2 | 2 | 0 | 1 | 8 | 1 | 0 | 1 | 5.7 | 5.3 | 11.1 | 11.3 | 0.4 | 2.2 | 1.22 |
| Bryan Garcia | Atl | mr | 26 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.5 | 3.0 | 10.5 | 5.3 | 0.0 | 1.8 | 1.17 |
| Deivi Garcia | Mia | sp | 22 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 5.8 | 0.3 | 6.1 | 7.7 | 1.0 | 24.0 | 0.68 |
| Edgar Garcia | Phi | mr | 24 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.0 | 3.4 | 3.4 | 3.4 | 0.0 | 1.0 | 0.38 |
| Jarlin Garcia* | LAA | mr | 28 | 1 | 1 | 1 | 4 | 1 | 2 | 2 | 1 | 6.3 | 3.1 | 9.9 | 8.1 | 0.4 | 2.6 | 1.05 |
| Luis Garcia | KC | mr | 34 | 2 | 0 | 2 | 0 | 9 | 0 | 1 | 2 | 17.9 | 8.8 | 26.7 | 10.9 | 3.0 | 1.2 | 2.97 |
| Luis Garcia | Pit | mr | 24 | 0 | 0 | 4 | 3 | 0 | 0 | 0 | 2 | 9.4 | 3.5 | 13.8 | 4.7 | 1.3 | 1.4 | 1.43 |
| Rico Garcia | LAD | mr | 27 | 1 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 16.8 | 3.6 | 20.4 | 4.4 | 2.2 | 1.2 | 2.27 |
| Rony Garcia | Col | mr | 23 | 5 | 1 | 0 | 0 | 1 | 0 | 0 | 2 | 13.8 | 3.1 | 16.9 | 5.6 | 3.7 | 1.8 | 1.88 |
| Yimi Garcia | KC | mr | 30 | 2 | 1 | 2 | 1 | 2 | 0 | 1 | 1 | 8.2 | 4.8 | 13.2 | 14.1 | 0.5 | 3.0 | 1.44 |
| Amir Garrett* | Phi | mr | 29 | 1 | 1 | 2 | 4 | 0 | 0 | 0 | 1 | 4.8 | 1.9 | 7.3 | 12.1 | 1.7 | 6.5 | 0.74 |
| Braxton Garrett* | TB | sp | 23 | 0 | 0 | 0 | 1 | 4 | 0 | 0 | 0 | 13.0 | 13.0 | 26.5 | 9.5 | 4.0 | 0.7 | 2.89 |
| Kevin Gausman | SD | sp | 30 | 10 | 1 | 7 | 3 | 4 | 4 | 0 | 3 | 7.4 | 3.1 | 10.6 | 12.2 | 1.4 | 3.9 | 1.16 |
| Sam Gaviglio | Col | mr | 31 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 13.9 | 10.6 | 24.5 | 7.4 | 4.1 | 0.7 | 2.73 |
| Joey Gerber | Phi | mr | 24 | 2 | 0 | 1 | 6 | 4 | 0 | 1 | 3 | 9.0 | 3.3 | 13.2 | 3.2 | 1.1 | 1.0 | 1.37 |
| Ian Gibaut | Hou | mr | 27 | 1 | 1 | 0 | 2 | 7 | 1 | 0 | 0 | 7.5 | 6.3 | 14.4 | 10.2 | 1.5 | 1.6 | 1.53 |
| Kyle Gibson | Oak | sp | 33 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10.3 | 2.2 | 12.4 | 9.7 | 1.6 | 4.5 | 1.38 |
| Kevin Ginkel | Mil | mr | 27 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 3.4 | 13.5 | 16.9 | 13.5 | 0.0 | 1.0 | 1.88 |
| Lucas Giolito | SD | sp | 26 | 8 | 2 | 1 | 8 | 7 | 0 | 0 | 2 | 6.5 | 3.0 | 9.9 | 12.4 | 1.1 | 4.1 | 1.06 |
| Mychal Givens | SD | mr | 31 | 2 | 0 | 0 | 0 | 1 | 0 | 0 | 2 | 9.8 | 7.9 | 17.7 | 6.8 | 3.0 | 0.9 | 1.97 |
| Tyler Glasnow | Sea | sp | 27 | 20 | 2 | 2 | 2 | 14 | 1 | 1 | 2 | 6.7 | 3.0 | 9.7 | 13.7 | 1.4 | 4.6 | 1.07 |
| Zack Godley | Col | sp | 31 | 2 | 2 | 1 | 6 | 8 | 0 | 0 | 1 | 15.4 | 5.3 | 21.4 | 10.0 | 3.3 | 1.9 | 2.31 |
| Austin Gomber* | LAA | mr | 27 | 2 | 3 | 2 | 5 | 7 | 0 | 0 | 2 | 6.2 | 5.0 | 11.6 | 8.0 | 0.2 | 1.6 | 1.25 |
| Tony Gonsolin | Mil | sp | 27 | 1 | 3 | 0 | 7 | 8 | 0 | 0 | 1 | 5.8 | 2.3 | 8.5 | 9.8 | 0.3 | 4.3 | 0.90 |
| Marco Gonzales* | Was | sp | 29 | 1 | 1 | 4 | 15 | 1 | 0 | 1 | 6 | 8.0 | 1.1 | 9.6 | 7.5 | 1.1 | 6.9 | 1.01 |
| Chi Chi Gonzalez | SF | sp | 29 | 2 | 1 | 0 | 5 | 7 | 0 | 0 | 4 | 10.0 | 4.2 | 14.7 | 8.5 | 0.8 | 2.0 | 1.58 |
| Gio Gonzalez* | NYM | mr | 35 | 6 | 1 | 0 | 7 | 6 | 0 | 1 | 0 | 13.2 | 5.1 | 18.9 | 8.7 | 2.3 | 1.7 | 2.03 |
| Victor Gonzalez* | LAD | mr | 25 | 4 | 2 | 2 | 10 | 1 | 0 | 0 | 1 | 5.4 | 0.9 | 7.8 | 9.7 | 0.1 | 11.0 | 0.70 |
| Nick Goody | Cin | mr | 29 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 18.0 | 11.3 | 29.3 | 11.3 | 2.3 | 1.0 | 3.25 |
| Trevor Gott | Tor | cl | 28 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 18.9 | 2.7 | 21.6 | 8.1 | 5.4 | 3.0 | 2.40 |
| Ashton Goudeau | Hou | mr | 28 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3.9 | 0.0 | 3.9 | 11.6 | 0.0 | 99.0 | 0.43 |
| Brusdar Graterol | Col | mr | 22 | 2 | 1 | 5 | 12 | 2 | 0 | 0 | 0 | 8.1 | 1.8 | 11.1 | 5.1 | 0.3 | 2.8 | 1.11 |
| Kendall Graveman | Mia | mr | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 7.4 | 3.9 | 11.3 | 7.0 | 1.7 | 1.8 | 1.26 |
| Jon Gray | Hou | sp | 29 | 7 | 1 | 4 | 7 | 9 | 1 | 0 | 0 | 11.2 | 2.8 | 14.5 | 5.8 | 1.5 | 2.0 | 1.56 |
| Sonny Gray | Ari | sp | 31 | 11 | 4 | 2 | 10 | 16 | 5 | 2 | 2 | 6.6 | 4.8 | 11.8 | 12.7 | 0.9 | 2.7 | 1.26 |
| Chad Green | Oak | mr | 30 | 5 | 0 | 0 | 2 | 4 | 0 | 0 | 1 | 6.3 | 1.4 | 8.0 | 11.3 | 1.4 | 7.8 | 0.86 |
| Shane Greene | Was | mr | 32 | 0 | 0 | 0 | 2 | 1 | 0 | 1 | 1 | 6.8 | 3.3 | 10.5 | 7.4 | 0.4 | 2.3 | 1.12 |
| Zack Greinke | ChC | sp | 37 | 5 | 2 | 1 | 5 | 13 | 0 | 2 | 9 | 11.2 | 1.4 | 12.8 | 9.2 | 0.9 | 6.7 | 1.40 |
| Foster Griffin* | ChW | mr | 25 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10.3 | 4.0 | 14.3 | 4.8 | 0.0 | 1.2 | 1.59 |
| Robert Gsellman | Was | sp | 27 | 3 | 2 | 5 | 3 | 8 | 0 | 0 | 4 | 13.2 | 5.4 | 19.1 | 7.5 | 1.5 | 1.4 | 2.06 |
| Junior Guerra | Hou | mr | 36 | 2 | 3 | 2 | 3 | 3 | 0 | 0 | 1 | 6.7 | 4.5 | 11.4 | 8.8 | 0.7 | 2.0 | 1.24 |
| Taylor Guilbeau* | Cin | mr | 28 | 0 | 0 | 1 | 1 | 2 | 0 | 0 | 1 | 12.6 | 4.8 | 18.0 | 5.4 | 1.2 | 1.1 | 1.93 |
| Josh Hader* | SD | cl | 27 | 1 | 2 | 3 | 7 | 8 | 0 | 0 | 0 | 3.6 | 5.4 | 9.7 | 12.6 | 1.3 | 2.4 | 1.00 |
| Jesse Hahn | Bal | mr | 31 | 3 | 1 | 0 | 8 | 4 | 0 | 0 | 1 | 3.2 | 3.8 | 7.9 | 9.5 | 0.2 | 2.5 | 0.78 |
| David Hale | Mia | mr | 33 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 5.2 | 2.9 | 8.6 | 6.3 | 1.1 | 2.2 | 0.89 |
| Cole Hamels* | Hou | sp | 37 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10.4 | 2.4 | 12.8 | 3.3 | 0.9 | 1.4 | 1.42 |
| Brad Hand* | Hou | cl | 31 | 2 | 2 | 0 | 10 | 0 | 0 | 1 | 0 | 6.1 | 2.4 | 9.8 | 10.1 | 0.0 | 4.3 | 0.94 |
| J.A. Happ* | ChC | sp | 38 | 7 | 1 | 6 | 4 | 1 | 0 | 0 | 3 | 6.4 | 2.6 | 9.3 | 6.8 | 1.4 | 2.6 | 1.01 |
| Ryne Harper | KC | mr | 32 | 0 | 1 | 0 | 3 | 1 | 0 | 2 | 1 | 7.0 | 1.7 | 9.6 | 9.0 | 0.3 | 5.2 | 0.97 |
| Will Harris | Det | mr | 36 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 1.9 | 2.9 | 11.6 | 0.0 | 6.0 | 0.32 |
| Geoff Hartlieb | LAA | mr | 27 | 0 | 1 | 1 | 7 | 8 | 0 | 0 | 2 | 7.2 | 8.2 | 16.4 | 8.0 | 0.4 | 1.0 | 1.71 |
| Hunter Harvey | NYM | mr | 26 | 0 | 0 | 0 | 3 | 9 | 0 | 0 | 0 | 8.6 | 3.6 | 12.8 | 7.1 | 1.5 | 2.0 | 1.35 |
| Matt Harvey | StL | sp | 32 | 0 | 2 | 3 | 2 | 4 | 0 | 0 | 1 | 19.2 | 4.0 | 23.6 | 7.2 | 5.0 | 1.8 | 2.58 |
| Thomas Hatch | NYM | mr | 26 | 14 | 2 | 1 | 8 | 2 | 1 | 1 | 4 | 5.4 | 5.0 | 11.0 | 8.0 | 0.7 | 1.6 | 1.15 |
| Andrew Heaney* | StL | sp | 30 | 0 | 2 | 5 | 9 | 4 | 0 | 0 | 3 | 9.0 | 2.4 | 11.7 | 9.7 | 1.5 | 4.1 | 1.26 |
| Taylor Hearn* | Tex | mr | 26 | 2 | 0 | 0 | 8 | 5 | 0 | 0 | 1 | 6.8 | 4.4 | 12.1 | 11.3 | 1.0 | 2.6 | 1.24 |
| Ben Heller | Hou | mr | 29 | 0 | 1 | 0 | 25 | 1 | 0 | 2 | 2 | 10.6 | 3.9 | 18.4 | 5.5 | 1.8 | 1.4 | 1.62 |
| Ryan Helsley | Pit | mr | 26 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 4.7 | 3.7 | 9.2 | 7.2 | 2.2 | 1.9 | 0.94 |
| Heath Hembree | Cle | mr | 32 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 2 | 17.1 | 4.3 | 21.7 | 8.9 | 5.6 | 2.1 | 2.37 |
| Kyle Hendricks | Was | sp | 31 | 5 | 0 | 1 | 4 | 3 | 0 | 1 | 2 | 8.4 | 0.8 | 9.3 | 8.3 | 0.9 | 10.9 | 1.02 |
| Liam Hendriks | Bal | cl | 32 | 0 | 0 | 2 | 3 | 0 | 0 | 0 | 0 | 4.8 | 0.9 | 6.0 | 13.8 | 0.4 | 15.4 | 0.64 |
| Jimmy Herget | Bal | mr | 27 | 0 | 1 | 0 | 5 | 0 | 0 | 0 | 1 | 6.3 | 5.4 | 12.4 | 8.6 | 0.9 | 1.6 | 1.30 |
| Carlos Hernandez | SF | sp | 24 | 1 | 0 | 0 | 2 | 1 | 0 | 0 | 1 | 13.7 | 4.8 | 18.8 | 10.5 | 2.7 | 2.2 | 2.05 |
| Darwinzon Hernandez* | Atl | mr | 24 | 0 | 1 | 1 | 5 | 2 | 1 | 0 | 0 | 11.0 | 4.9 | 17.5 | 10.1 | 2.5 | 2.1 | 1.77 |
| Elieser Hernandez | Phi | sp | 26 | 2 | 0 | 0 | 6 | 0 | 1 | 0 | 0 | 6.3 | 1.8 | 8.6 | 11.5 | 1.3 | 6.2 | 0.90 |
| Jonathan Hernandez | Tex | mr | 24 | 5 | 1 | 2 | 9 | 6 | 0 | 0 | 4 | 6.0 | 1.5 | 8.1 | 9.7 | 0.4 | 6.6 | 0.83 |
| Codi Heuer | Was | mr | 24 | 5 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 4.5 | 2.8 | 7.4 | 10.1 | 0.1 | 3.6 | 0.81 |
| Cam Hill | KC | mr | 27 | 1 | 0 | 0 | 7 | 1 | 0 | 1 | 1 | 6.6 | 2.3 | 10.0 | 7.9 | 2.0 | 3.4 | 0.99 |
| Rich Hill* | Hou | sp | 41 | 10 | 0 | 5 | 1 | 9 | 0 | 1 | 3 | 8.4 | 4.4 | 12.9 | 6.2 | 1.1 | 1.4 | 1.43 |
| Tim Hill* | LAD | mr | 31 | 1 | 2 | 0 | 3 | 2 | 0 | 1 | 0 | 5.1 | 1.3 | 7.0 | 10.8 | 0.6 | 8.1 | 0.72 |
| Jeff Hoffman | TB | mr | 28 | 1 | 0 | 4 | 4 | 8 | 0 | 1 | 2 | 16.1 | 3.3 | 20.2 | 8.6 | 1.9 | 2.6 | 2.16 |
| Derek Holland* | Phi | mr | 34 | 0 | 1 | 1 | 4 | 5 | 0 | 0 | 1 | 9.7 | 1.8 | 11.9 | 7.7 | 3.1 | 4.4 | 1.27 |
| Greg Holland | Bal | mr | 35 | 2 | 1 | 0 | 8 | 3 | 0 | 0 | 2 | 6.0 | 2.4 | 9.1 | 10.3 | 0.6 | 4.3 | 0.94 |
| Clay Holmes | Hou | mr | 28 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.0 | 9.0 | 9.0 | 9.0 | 0.0 | 1.0 | 1.00 |
| Tanner Houck | Cle | sp | 25 | 1 | 0 | 0 | 3 | 6 | 0 | 0 | 0 | 7.6 | 8.4 | 16.6 | 11.9 | 1.6 | 1.4 | 1.77 |
| Adrian Houser | LAD | sp | 28 | 8 | 0 | 10 | 11 | 3 | 1 | 1 | 2 | 12.6 | 4.8 | 18.2 | 8.6 | 1.3 | 1.8 | 1.93 |
| Sam Howard* | KC | mr | 28 | 0 | 2 | 1 | 9 | 0 | 1 | 0 | 1 | 7.3 | 3.7 | 12.5 | 13.0 | 1.7 | 3.5 | 1.23 |
| Spencer Howard | NYM | sp | 24 | 4 | 3 | 6 | 6 | 2 | 1 | 1 | 0 | 10.4 | 5.0 | 16.0 | 9.5 | 2.4 | 1.9 | 1.71 |
| James Hoyt | ChW | mr | 34 | 2 | 1 | 1 | 1 | 9 | 0 | 2 | 0 | 5.1 | 3.8 | 9.0 | 11.5 | 0.5 | 3.0 | 0.99 |
| Dakota Hudson | Bos | sp | 26 | 0 | 7 | 0 | 7 | 1 | 0 | 3 | 0 | 7.8 | 3.1 | 11.4 | 8.0 | 1.1 | 2.6 | 1.22 |
| Daniel Hudson | SF | cl | 34 | 0 | 0 | 0 | 3 | 1 | 0 | 1 | 1 | 3.7 | 5.3 | 9.8 | 8.7 | 0.8 | 1.6 | 1.00 |
| Jared Hughes | Ari | mr | 35 | 7 | 2 | 3 | 13 | 2 | 0 | 0 | 1 | 8.4 | 4.6 | 14.2 | 7.1 | 0.9 | 1.5 | 1.45 |
| Tommy Hunter | Bal | mr | 34 | 1 | 0 | 2 | 4 | 1 | 0 | 0 | 1 | 7.1 | 3.9 | 11.6 | 9.1 | 0.7 | 2.3 | 1.22 |
| Raisel Iglesias | Was | cl | 31 | 2 | 1 | 0 | 1 | 2 | 0 | 0 | 0 | 5.7 | 1.5 | 7.4 | 12.7 | 0.2 | 8.4 | 0.80 |
| Luke Jackson | Pit | mr | 29 | 4 | 0 | 2 | 2 | 8 | 0 | 1 | 1 | 14.3 | 4.0 | 18.6 | 7.1 | 1.3 | 1.8 | 2.04 |
| Josh James | SD | mr | 28 | 0 | 0 | 0 | 1 | 2 | 1 | 0 | 1 | 11.2 | 8.8 | 20.5 | 10.6 | 3.5 | 1.2 | 2.22 |
| Kenley Jansen | NYY | cl | 33 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10.0 | 5.1 | 15.1 | 12.1 | 0.7 | 2.4 | 1.68 |
| Cristian Javier | Bos | sp | 24 | 1 | 2 | 3 | 6 | 8 | 2 | 0 | 2 | 5.9 | 4.1 | 10.4 | 9.3 | 1.9 | 2.3 | 1.11 |
| Jeremy Jeffress | Mil | cl | 33 | 1 | 0 | 0 | 4 | 0 | 0 | 0 | 1 | 4.3 | 3.4 | 8.2 | 8.7 | 0.2 | 2.5 | 0.86 |
| Joe Jimenez | StL | mr | 26 | 4 | 0 | 3 | 21 | 4 | 0 | 0 | 1 | 10.1 | 2.1 | 14.7 | 10.2 | 3.6 | 4.9 | 1.35 |
| Pierce Johnson | KC | mr | 30 | 1 | 0 | 0 | 1 | 3 | 1 | 0 | 2 | 5.4 | 5.1 | 10.6 | 12.9 | 0.1 | 2.5 | 1.17 |
| Nate Jones | NYM | mr | 35 | 1 | 1 | 2 | 4 | 6 | 0 | 0 | 1 | 11.4 | 3.0 | 15.2 | 11.3 | 1.5 | 3.8 | 1.60 |
| Jakob Junis | SF | sp | 28 | 3 | 1 | 2 | 11 | 4 | 3 | 0 | 3 | 11.9 | 3.3 | 16.1 | 7.1 | 2.6 | 2.2 | 1.68 |
| Rob Kaminsky* | Bos | mr | 26 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 2 | 5.8 | 6.8 | 13.5 | 2.9 | 1.0 | 0.4 | 1.39 |
| James Kaprielian | Ari | mr | 27 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 34.4 | 4.9 | 39.3 | 2.5 | 9.8 | 0.5 | 4.36 |
| James Karinchak | SD | mr | 25 | 6 | 0 | 2 | 3 | 7 | 1 | 1 | 2 | 6.3 | 6.1 | 12.6 | 17.1 | 0.2 | 2.8 | 1.37 |
| Anthony Kay* | Det | mr | 26 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 8.0 | 4.0 | 12.3 | 12.0 | 1.2 | 3.0 | 1.33 |
| Brad Keller | Cle | sp | 25 | 4 | 1 | 0 | 3 | 1 | 0 | 0 | 1 | 7.3 | 2.6 | 10.1 | 6.6 | 0.3 | 2.5 | 1.10 |
| Brad Keller | Sea | sp | 25 | 2 | 0 | 1 | 4 | 0 | 0 | 1 | 1 | 5.3 | 2.0 | 7.9 | 6.6 | 0.1 | 3.4 | 0.81 |
| Brad Keller |   | sp | 25 | 6 | 1 | 1 | 7 | 1 | 0 | 1 | 2 | 6.6 | 2.4 | 9.3 | 6.6 | 0.2 | 2.8 | 1.00 |
| Mitch Keller | ChW | sp | 25 | 3 | 0 | 1 | 5 | 5 | 0 | 0 | 3 | 3.8 | 7.9 | 12.3 | 8.9 | 0.9 | 1.1 | 1.31 |
| Joe Kelly | ChC | mr | 33 | 2 | 0 | 1 | 1 | 4 | 0 | 0 | 1 | 11.9 | 11.9 | 24.2 | 5.6 | 0.0 | 0.5 | 2.65 |
| Merrill Kelly | Was | sp | 32 | 4 | 0 | 0 | 3 | 2 | 0 | 0 | 2 | 8.1 | 1.1 | 9.4 | 9.6 | 1.4 | 8.4 | 1.02 |
| Ian Kennedy | Min | mr | 36 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 14.2 | 1.4 | 16.1 | 9.5 | 4.3 | 6.7 | 1.74 |
| Clayton Kershaw* | Mil | sp | 33 | 0 | 1 | 4 | 6 | 0 | 1 | 0 | 2 | 6.4 | 1.5 | 8.1 | 9.9 | 1.2 | 6.8 | 0.87 |
| Dallas Keuchel* | ChC | sp | 33 | 14 | 1 | 6 | 6 | 1 | 0 | 1 | 4 | 8.9 | 2.9 | 12.1 | 5.5 | 0.5 | 1.9 | 1.31 |
| Mike Kickham* | Hou | mr | 32 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 8.6 | 1.1 | 10.8 | 14.0 | 4.3 | 13.0 | 1.08 |
| Yusei Kikuchi* | Cin | sp | 30 | 3 | 3 | 2 | 7 | 4 | 0 | 1 | 0 | 9.5 | 3.6 | 13.7 | 7.2 | 1.2 | 2.0 | 1.46 |
| Franklyn Kilome | SD | mr | 26 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 8.6 | 4.9 | 14.1 | 14.7 | 4.9 | 3.0 | 1.50 |
| Kwang Hyun Kim* | Bos | sp | 32 | 1 | 2 | 0 | 4 | 2 | 0 | 0 | 0 | 7.4 | 2.6 | 10.3 | 5.8 | 0.7 | 2.2 | 1.12 |
| Craig Kimbrel | NYM | mr | 33 | 1 | 4 | 3 | 5 | 6 | 0 | 2 | 1 | 5.0 | 7.2 | 13.0 | 16.4 | 1.1 | 2.3 | 1.35 |
| John King* | NYM | mr | 26 | 0 | 0 | 3 | 5 | 2 | 1 | 0 | 0 | 10.5 | 3.7 | 15.9 | 6.8 | 1.3 | 1.8 | 1.57 |
| Michael King | ChC | mr | 26 | 1 | 0 | 1 | 7 | 2 | 0 | 0 | 2 | 11.2 | 3.9 | 16.0 | 8.8 | 2.3 | 2.2 | 1.69 |
| Tyler Kinley | Col | mr | 30 | 1 | 0 | 0 | 7 | 12 | 0 | 1 | 1 | 4.9 | 5.6 | 11.3 | 11.3 | 0.6 | 2.0 | 1.17 |
| Brandon Kintzler | Tor | cl | 36 | 3 | 1 | 3 | 1 | 0 | 1 | 0 | 0 | 7.1 | 3.2 | 10.4 | 4.5 | 1.1 | 1.4 | 1.14 |
| Andrew Kittredge | Det | mr | 31 | 1 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 9.5 | 3.8 | 13.4 | 5.2 | 0.8 | 1.4 | 1.48 |
| Branden Kline | Cin | mr | 29 | 0 | 0 | 0 | 2 | 1 | 0 | 0 | 1 | 15.3 | 4.5 | 21.6 | 3.6 | 2.7 | 0.8 | 2.20 |
| Corey Kluber | Mia | sp | 35 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 6.4 | 3.6 | 9.9 | 9.2 | 0.7 | 2.6 | 1.11 |
| Adam Kolarek* | Bos | mr | 32 | 3 | 1 | 1 | 1 | 6 | 0 | 1 | 3 | 6.1 | 1.6 | 7.8 | 7.1 | 0.3 | 4.6 | 0.85 |
| Dean Kremer | Min | sp | 25 | 0 | 0 | 1 | 2 | 3 | 0 | 0 | 5 | 7.6 | 6.2 | 14.1 | 10.4 | 0.1 | 1.7 | 1.54 |
| Chad Kuhl | Oak | sp | 28 | 3 | 1 | 1 | 0 | 1 | 0 | 0 | 6 | 8.0 | 6.2 | 14.2 | 8.2 | 1.5 | 1.3 | 1.58 |
| Brady Lail | Cin | mr | 27 | 3 | 1 | 1 | 4 | 2 | 0 | 0 | 0 | 5.6 | 2.5 | 8.9 | 6.6 | 2.3 | 2.7 | 0.90 |
| Travis Lakins | Tex | mr | 27 | 0 | 1 | 2 | 2 | 8 | 0 | 0 | 1 | 8.4 | 5.9 | 14.5 | 8.7 | 1.3 | 1.5 | 1.58 |
| Jimmy Lambert | TB | mr | 26 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 16.2 | 9.0 | 25.2 | 3.6 | 0.9 | 0.4 | 2.80 |
| Dinelson Lamet | KC | sp | 28 | 3 | 1 | 2 | 9 | 1 | 1 | 0 | 3 | 5.6 | 2.0 | 8.0 | 13.8 | 0.8 | 7.0 | 0.84 |
| Wade LeBlanc* | Atl | sp | 36 | 0 | 0 | 1 | 2 | 0 | 0 | 0 | 1 | 9.4 | 3.1 | 12.9 | 4.7 | 1.8 | 1.5 | 1.39 |
| Jose Leclerc | Pit | cl | 27 | 3 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 38.6 | 15.4 | 54.0 | 3.9 | 3.9 | 0.3 | 6.00 |
| Brandon Leibrandt* | Min | mr | 28 | 1 | 0 | 2 | 0 | 2 | 0 | 0 | 0 | 6.6 | 7.6 | 14.3 | 2.3 | 0.8 | 0.3 | 1.58 |
| Jon Lester* | Det | sp | 37 | 8 | 4 | 4 | 9 | 7 | 1 | 1 | 1 | 8.2 | 2.7 | 11.3 | 6.9 | 1.4 | 2.6 | 1.21 |
| Josh Lindblom | KC | sp | 34 | 10 | 1 | 2 | 9 | 3 | 0 | 1 | 5 | 9.1 | 4.5 | 14.2 | 10.1 | 1.1 | 2.2 | 1.51 |
| Jonathan Loaisiga | Tor | mr | 26 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 6.0 | 0.8 | 8.3 | 10.5 | 0.8 | 14.0 | 0.75 |
| Walker Lockett | Cle | mr | 27 | 5 | 1 | 0 | 6 | 0 | 0 | 0 | 0 | 15.0 | 3.9 | 20.1 | 8.4 | 1.9 | 2.1 | 2.10 |
| Jorge Lopez | Bal | sp | 28 | 1 | 1 | 2 | 6 | 9 | 0 | 1 | 2 | 9.0 | 2.4 | 12.2 | 5.6 | 1.3 | 2.3 | 1.26 |
| Pablo Lopez | LAD | sp | 25 | 9 | 6 | 7 | 16 | 3 | 0 | 0 | 4 | 7.1 | 3.3 | 11.1 | 9.3 | 1.0 | 2.8 | 1.16 |
| Reynaldo Lopez | TB | sp | 27 | 5 | 4 | 1 | 5 | 0 | 0 | 0 | 4 | 17.4 | 5.7 | 23.7 | 10.3 | 4.3 | 1.8 | 2.57 |
| Yoan Lopez | Ari | mr | 28 | 3 | 1 | 1 | 1 | 2 | 2 | 0 | 2 | 15.0 | 5.3 | 20.5 | 6.7 | 3.0 | 1.3 | 2.26 |
| Michael Lorenzen | Tor | mr | 29 | 2 | 1 | 0 | 3 | 3 | 3 | 1 | 1 | 11.0 | 3.9 | 15.2 | 11.2 | 1.7 | 2.9 | 1.65 |
| Aaron Loup* | Det | mr | 33 | 0 | 0 | 6 | 5 | 1 | 0 | 0 | 1 | 6.6 | 1.9 | 9.0 | 8.2 | 1.2 | 4.4 | 0.94 |
| Joey Lucchesi* | Phi | sp | 28 | 0 | 0 | 0 | 5 | 1 | 0 | 0 | 2 | 18.6 | 3.0 | 23.6 | 6.8 | 1.9 | 2.3 | 2.41 |
| Seth Lugo | Cin | cl | 31 | 2 | 0 | 2 | 1 | 1 | 0 | 1 | 0 | 12.2 | 2.3 | 14.6 | 11.8 | 1.9 | 5.1 | 1.61 |
| Jesus Luzardo* | NYM | sp | 23 | 8 | 2 | 9 | 11 | 9 | 5 | 0 | 3 | 9.6 | 2.4 | 12.6 | 8.5 | 1.7 | 3.5 | 1.33 |
| Jordan Lyles | Cin | sp | 30 | 2 | 0 | 2 | 9 | 7 | 2 | 3 | 2 | 9.7 | 3.5 | 13.8 | 5.8 | 2.1 | 1.6 | 1.47 |
| Lance Lynn | NYY | sp | 34 | 18 | 4 | 6 | 18 | 2 | 0 | 0 | 5 | 8.3 | 2.7 | 11.7 | 8.9 | 1.4 | 3.3 | 1.22 |
| Kenta Maeda | Ari | sp | 33 | 14 | 2 | 1 | 4 | 0 | 0 | 1 | 2 | 6.6 | 1.8 | 8.6 | 12.4 | 1.8 | 6.9 | 0.94 |
| Matt Magill | Hou | mr | 31 | 1 | 0 | 0 | 1 | 7 | 0 | 0 | 3 | 13.9 | 8.1 | 22.4 | 9.3 | 3.9 | 1.1 | 2.44 |
| Tyler Mahle | Min | sp | 26 | 6 | 2 | 0 | 7 | 5 | 3 | 0 | 4 | 8.0 | 4.1 | 12.6 | 12.1 | 1.7 | 2.9 | 1.35 |
| Sean Manaea* | Phi | sp | 29 | 5 | 3 | 1 | 7 | 5 | 0 | 1 | 8 | 9.2 | 1.1 | 10.6 | 7.7 | 1.3 | 7.2 | 1.14 |
| Nick Margevicius* | Sea | sp | 25 | 2 | 1 | 2 | 1 | 3 | 0 | 0 | 2 | 11.8 | 3.0 | 14.9 | 8.2 | 1.8 | 2.7 | 1.64 |
| Brailyn Marquez* | Ari | mr | 22 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13.5 | 19.5 | 33.0 | 3.0 | 1.5 | 0.2 | 3.67 |
| German Marquez | Det | sp | 26 | 10 | 7 | 8 | 6 | 13 | 0 | 3 | 1 | 8.6 | 2.7 | 11.5 | 7.5 | 0.4 | 2.8 | 1.26 |
| Evan Marshall | LAD | mr | 31 | 3 | 0 | 0 | 2 | 6 | 0 | 0 | 3 | 9.0 | 4.1 | 13.3 | 12.0 | 0.8 | 3.0 | 1.45 |
| Brett Martin* | Atl | mr | 26 | 0 | 1 | 0 | 2 | 1 | 1 | 0 | 0 | 6.8 | 5.0 | 12.2 | 6.8 | 0.7 | 1.4 | 1.31 |
| Chris Martin | Bos | mr | 35 | 1 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 4.2 | 0.0 | 4.8 | 8.1 | 0.7 | 99.0 | 0.46 |
| Chris Martin | Cle | mr | 35 | 2 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 4.8 | 1.4 | 6.5 | 10.8 | 0.9 | 7.6 | 0.69 |
| Chris Martin |   | mr | 35 | 3 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 4.5 | 0.6 | 5.6 | 9.3 | 0.7 | 15.0 | 0.56 |
| Carlos Martinez | Det | sp | 29 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 9.0 | 0.0 | 9.0 | 9.0 | 0.0 | 99.0 | 1.00 |
| Phil Maton | LAD | mr | 28 | 2 | 0 | 1 | 7 | 6 | 0 | 0 | 0 | 12.8 | 1.9 | 15.8 | 13.6 | 0.3 | 7.3 | 1.63 |
| Tyler Matzek* | Hou | mr | 30 | 4 | 1 | 1 | 3 | 0 | 0 | 1 | 1 | 6.9 | 3.1 | 10.4 | 13.5 | 0.1 | 4.3 | 1.12 |
| Dustin May | NYY | sp | 23 | 5 | 1 | 6 | 6 | 6 | 0 | 1 | 2 | 8.0 | 3.3 | 11.6 | 7.5 | 1.9 | 2.3 | 1.25 |
| Trevor May | ChC | mr | 31 | 2 | 1 | 0 | 5 | 5 | 0 | 1 | 0 | 10.1 | 2.6 | 13.2 | 15.0 | 1.8 | 5.9 | 1.41 |
| Mike Mayers | Atl | mr | 29 | 0 | 2 | 1 | 7 | 1 | 0 | 1 | 0 | 4.4 | 2.8 | 7.8 | 11.6 | 0.8 | 4.1 | 0.80 |
| Chris Mazza | Atl | sp | 31 | 1 | 0 | 2 | 5 | 7 | 0 | 1 | 4 | 12.3 | 4.5 | 17.8 | 9.0 | 1.8 | 2.0 | 1.87 |
| Lance McCullers | Pit | sp | 27 | 7 | 6 | 1 | 21 | 4 | 1 | 1 | 2 | 8.8 | 4.2 | 14.1 | 9.6 | 1.0 | 2.3 | 1.45 |
| Jake McGee* | KC | mr | 34 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.9 | 2.6 | 9.5 | 13.4 | 0.5 | 5.1 | 1.06 |
| Kyle McGowin | Cle | mr | 29 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 10.5 | 3.6 | 14.3 | 11.0 | 1.4 | 3.1 | 1.57 |
| Triston McKenzie | Tex | sp | 23 | 5 | 2 | 3 | 1 | 1 | 0 | 0 | 3 | 7.3 | 3.4 | 10.8 | 12.5 | 1.7 | 3.7 | 1.19 |
| John Means* | Col | sp | 28 | 0 | 4 | 0 | 10 | 3 | 0 | 0 | 2 | 8.8 | 1.7 | 11.2 | 8.7 | 3.1 | 5.1 | 1.17 |
| Nick Mears | LAA | mr | 24 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 12.7 | 7.9 | 20.6 | 12.7 | 1.6 | 1.6 | 2.29 |
| Adonis Medina | Bos | sp | 24 | 0 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 7.5 | 4.4 | 11.9 | 6.3 | 1.3 | 1.4 | 1.33 |
| Humberto Mejia | Col | sp | 24 | 0 | 0 | 0 | 3 | 2 | 1 | 1 | 1 | 15.6 | 6.0 | 22.5 | 8.2 | 5.4 | 1.4 | 2.40 |
| Mark Melancon | Bos | cl | 36 | 1 | 1 | 1 | 5 | 4 | 0 | 0 | 2 | 8.1 | 2.0 | 10.8 | 6.1 | 0.3 | 3.0 | 1.13 |
| Keury Mella | TB | mr | 27 | 2 | 0 | 3 | 0 | 3 | 0 | 1 | 4 | 14.1 | 4.0 | 18.2 | 8.1 | 0.5 | 2.0 | 2.02 |
| Conner Menez* | StL | mr | 26 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 2 | 5.4 | 4.6 | 10.8 | 6.2 | 1.5 | 1.3 | 1.11 |
| Daniel Mengden | NYM | mr | 28 | 4 | 2 | 4 | 10 | 7 | 1 | 1 | 5 | 11.5 | 5.2 | 17.3 | 6.9 | 1.8 | 1.3 | 1.87 |
| Julian Merryweather | Bos | mr | 29 | 0 | 0 | 0 | 1 | 3 | 1 | 0 | 2 | 8.5 | 3.5 | 12.2 | 8.7 | 0.6 | 2.5 | 1.33 |
| Keynan Middleton | Atl | mr | 27 | 0 | 0 | 0 | 1 | 2 | 0 | 0 | 1 | 14.5 | 4.8 | 20.1 | 11.8 | 1.4 | 2.4 | 2.15 |
| Wade Miley* | Tor | sp | 34 | 5 | 0 | 5 | 7 | 0 | 1 | 0 | 2 | 9.4 | 5.6 | 15.9 | 7.1 | 0.6 | 1.3 | 1.66 |
| Andrew Miller* | Mil | mr | 36 | 2 | 0 | 1 | 13 | 6 | 0 | 0 | 1 | 5.9 | 3.1 | 11.3 | 10.8 | 0.9 | 3.5 | 1.00 |
| Tyson Miller | TB | sp | 25 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 9.4 | 6.3 | 16.3 | 5.7 | 1.3 | 0.9 | 1.74 |
| Alec Mills | Bal | sp | 29 | 1 | 4 | 12 | 9 | 2 | 0 | 1 | 2 | 8.3 | 3.2 | 12.0 | 7.4 | 1.9 | 2.3 | 1.28 |
| Hoby Milner* | KC | mr | 30 | 3 | 0 | 0 | 3 | 2 | 0 | 0 | 5 | 6.9 | 4.1 | 11.5 | 7.2 | 1.9 | 1.8 | 1.22 |
| Tommy Milone* | Atl | sp | 34 | 5 | 1 | 8 | 11 | 4 | 1 | 0 | 3 | 10.9 | 2.1 | 13.8 | 7.4 | 1.6 | 3.5 | 1.45 |
| Mike Minor* | Sea | sp | 33 | 9 | 5 | 4 | 5 | 2 | 0 | 0 | 4 | 7.9 | 3.6 | 11.8 | 9.9 | 1.8 | 2.7 | 1.29 |
| A.J. Minter* | NYY | mr | 27 | 4 | 1 | 0 | 0 | 3 | 0 | 0 | 4 | 5.2 | 2.9 | 8.1 | 10.0 | 0.4 | 3.5 | 0.90 |
| Anthony Misiewicz* | ChW | mr | 26 | 1 | 0 | 0 | 2 | 4 | 1 | 1 | 0 | 9.5 | 3.5 | 13.5 | 12.4 | 0.2 | 3.5 | 1.45 |
| Casey Mize | Pit | sp | 24 | 10 | 4 | 2 | 18 | 2 | 0 | 0 | 0 | 7.9 | 3.9 | 13.5 | 7.5 | 1.3 | 2.0 | 1.31 |
| Frankie Montas | ChC | sp | 28 | 5 | 5 | 5 | 7 | 5 | 1 | 1 | 4 | 11.0 | 5.0 | 16.4 | 11.1 | 1.8 | 2.2 | 1.77 |
| Rafael Montero | Mia | cl | 30 | 4 | 0 | 2 | 2 | 0 | 0 | 0 | 3 | 5.3 | 4.6 | 10.2 | 9.3 | 1.0 | 2.0 | 1.10 |
| Jordan Montgomery* | Pit | sp | 28 | 15 | 1 | 3 | 9 | 15 | 1 | 1 | 1 | 9.5 | 1.5 | 11.6 | 8.8 | 0.7 | 5.7 | 1.22 |
| Mike Montgomery* | ChW | mr | 31 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.5 | 5.3 | 12.8 | 4.5 | 1.5 | 0.9 | 1.42 |
| Adrian Morejon* | SD | mr | 22 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 8.5 | 3.3 | 11.8 | 10.7 | 2.2 | 3.2 | 1.32 |
| Adam Morgan* | LAA | mr | 31 | 1 | 0 | 1 | 2 | 1 | 0 | 0 | 1 | 7.7 | 3.2 | 11.3 | 9.3 | 1.4 | 2.9 | 1.21 |
| Mike Morin | Det | mr | 30 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 22.2 | 3.2 | 27.0 | 3.2 | 3.2 | 1.0 | 2.82 |
| Charlie Morton | Mil | sp | 37 | 1 | 0 | 0 | 11 | 1 | 0 | 0 | 3 | 9.8 | 3.5 | 14.0 | 9.5 | 1.0 | 2.7 | 1.47 |
| Patrick Murphy | Atl | mr | 26 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 21.6 | 16.2 | 37.8 | 5.4 | 0.0 | 0.3 | 4.20 |
| Joe Musgrove | Min | sp | 28 | 4 | 2 | 1 | 3 | 3 | 0 | 1 | 2 | 10.3 | 4.4 | 15.0 | 13.5 | 1.6 | 3.0 | 1.64 |
| Nick Nelson | Bal | mr | 25 | 1 | 0 | 1 | 0 | 2 | 0 | 0 | 0 | 9.2 | 3.6 | 12.8 | 8.4 | 1.9 | 2.4 | 1.42 |
| Hector Neris | LAA | mr | 32 | 1 | 2 | 2 | 0 | 8 | 0 | 0 | 4 | 10.6 | 3.4 | 14.0 | 10.1 | 0.1 | 3.0 | 1.55 |
| Dovydas Neverauskas | Tor | mr | 28 | 2 | 0 | 1 | 0 | 2 | 0 | 0 | 3 | 13.8 | 7.7 | 21.5 | 9.3 | 1.6 | 1.2 | 2.39 |
| Jake Newberry | Mia | mr | 26 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 5.8 | 3.5 | 9.3 | 10.3 | 1.6 | 2.9 | 1.04 |
| Sean Newcomb* | Tor | sp | 28 | 2 | 1 | 2 | 16 | 12 | 0 | 1 | 0 | 14.4 | 3.8 | 19.5 | 6.7 | 2.7 | 1.8 | 2.03 |
| Ljay Newsome | StL | sp | 24 | 0 | 1 | 8 | 7 | 0 | 0 | 1 | 0 | 15.9 | 2.0 | 19.0 | 5.1 | 3.6 | 2.5 | 1.99 |
| Juan Nicasio | Phi | mr | 34 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 19.6 | 4.9 | 24.5 | 4.9 | 4.9 | 1.0 | 2.73 |
| Aaron Nola | Min | sp | 28 | 9 | 3 | 2 | 6 | 1 | 0 | 2 | 0 | 5.9 | 2.6 | 8.7 | 12.6 | 1.1 | 4.9 | 0.94 |
| Daniel Norris* | Tor | mr | 28 | 5 | 1 | 1 | 0 | 0 | 0 | 0 | 2 | 7.1 | 1.9 | 9.0 | 8.4 | 0.7 | 4.4 | 1.00 |
| Ivan Nova | KC | sp | 34 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 11.0 | 0.0 | 12.3 | 4.9 | 3.7 | 99.0 | 1.23 |
| Darren O'Day | Sea | mr | 38 | 3 | 0 | 1 | 19 | 2 | 1 | 0 | 3 | 6.5 | 3.1 | 12.8 | 10.8 | 0.8 | 3.5 | 1.07 |
| Jake Odorizzi | ChW | sp | 31 | 4 | 2 | 0 | 4 | 1 | 0 | 1 | 1 | 13.7 | 3.8 | 18.5 | 5.4 | 3.1 | 1.4 | 1.95 |
| Shohei Ohtani | Ari | dh | 26 | 3 | 0 | 0 | 0 | 2 | 0 | 0 | 3 | 21.9 | 19.4 | 41.3 | 11.8 | 3.4 | 0.6 | 4.59 |
| Josh Osich* | Pit | mr | 32 | 3 | 0 | 1 | 6 | 1 | 0 | 1 | 1 | 11.9 | 4.0 | 17.2 | 7.9 | 3.4 | 1.9 | 1.77 |
| Roberto Osuna | Tor | mr | 26 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 5.9 | 3.5 | 9.4 | 4.1 | 0.6 | 1.2 | 1.04 |
| Corey Oswalt | Cle | mr | 27 | 10 | 1 | 0 | 3 | 2 | 0 | 0 | 2 | 11.8 | 1.7 | 14.1 | 9.3 | 1.7 | 5.3 | 1.50 |
| Adam Ottavino | Ari | mr | 35 | 5 | 1 | 0 | 2 | 4 | 1 | 2 | 3 | 11.6 | 9.3 | 21.3 | 10.8 | 1.4 | 1.2 | 2.32 |
| Johan Oviedo | StL | sp | 23 | 2 | 1 | 1 | 13 | 15 | 0 | 1 | 3 | 12.4 | 3.2 | 17.3 | 8.1 | 1.6 | 2.5 | 1.74 |
| Chris Paddack | Mia | sp | 25 | 4 | 0 | 2 | 5 | 0 | 0 | 0 | 0 | 7.6 | 1.7 | 9.6 | 8.9 | 1.7 | 5.2 | 1.03 |
| Emilio Pagan | StL | mr | 30 | 1 | 2 | 0 | 0 | 1 | 0 | 0 | 1 | 4.4 | 2.7 | 7.0 | 7.7 | 1.3 | 2.9 | 0.78 |
| Enoli Paredes | TB | mr | 25 | 2 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 9.9 | 7.6 | 17.6 | 9.7 | 0.9 | 1.3 | 1.94 |
| Blake Parker | Det | mr | 36 | 2 | 1 | 1 | 2 | 1 | 0 | 0 | 0 | 5.4 | 3.0 | 8.7 | 11.9 | 1.5 | 4.0 | 0.93 |
| Luis Patino | NYM | mr | 21 | 1 | 0 | 0 | 2 | 2 | 0 | 0 | 0 | 10.7 | 6.3 | 18.2 | 10.0 | 1.9 | 1.6 | 1.88 |
| James Paxton* | StL | sp | 32 | 3 | 1 | 3 | 14 | 5 | 1 | 1 | 6 | 10.1 | 2.9 | 14.3 | 10.9 | 1.6 | 3.7 | 1.45 |
| Joel Payamps | Mia | mr | 27 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 18.0 | 2.3 | 20.3 | 11.3 | 0.0 | 5.0 | 2.25 |
| Nate Pearson | NYM | sp | 24 | 8 | 2 | 10 | 3 | 5 | 1 | 0 | 4 | 6.3 | 7.2 | 13.8 | 7.2 | 2.1 | 1.0 | 1.49 |
| Felix Pena | SF | mr | 31 | 5 | 0 | 0 | 4 | 2 | 0 | 1 | 1 | 8.8 | 3.1 | 12.3 | 8.9 | 0.6 | 2.8 | 1.33 |
| Freddy Peralta | ChW | mr | 25 | 4 | 2 | 0 | 7 | 5 | 0 | 0 | 2 | 7.2 | 4.4 | 12.4 | 14.4 | 0.1 | 3.3 | 1.28 |
| Wandy Peralta* | Tex | mr | 29 | 0 | 1 | 2 | 5 | 2 | 3 | 0 | 4 | 8.6 | 3.3 | 12.4 | 7.0 | 0.6 | 2.1 | 1.32 |
| Luis Perdomo | Tor | mr | 28 | 3 | 0 | 0 | 0 | 3 | 0 | 2 | 2 | 8.0 | 5.7 | 13.6 | 10.6 | 2.0 | 1.9 | 1.52 |
| Cionel Perez* | Cle | mr | 25 | 0 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 12.1 | 4.2 | 16.3 | 6.6 | 1.4 | 1.6 | 1.81 |
| Martin Perez* | SD | sp | 30 | 3 | 5 | 1 | 19 | 10 | 0 | 0 | 4 | 7.8 | 3.4 | 12.1 | 6.8 | 1.2 | 2.0 | 1.24 |
| Oliver Perez* | Oak | mr | 39 | 3 | 0 | 3 | 4 | 0 | 0 | 1 | 1 | 6.8 | 2.5 | 10.4 | 4.5 | 0.3 | 1.8 | 1.03 |
| David Peterson* | SF | sp | 25 | 6 | 1 | 4 | 7 | 4 | 0 | 0 | 2 | 6.5 | 3.6 | 10.4 | 8.0 | 0.8 | 2.3 | 1.11 |
| Yusmeiro Petit | Bos | mr | 36 | 0 | 0 | 0 | 2 | 1 | 0 | 0 | 2 | 7.6 | 2.2 | 10.2 | 6.8 | 1.1 | 3.1 | 1.09 |
| David Phelps | Pit | mr | 34 | 2 | 1 | 1 | 0 | 7 | 0 | 0 | 0 | 10.3 | 1.9 | 12.2 | 12.2 | 4.3 | 6.5 | 1.36 |
| Evan Phillips | NYM | mr | 26 | 0 | 1 | 0 | 1 | 3 | 4 | 0 | 2 | 7.3 | 5.8 | 13.4 | 11.3 | 0.0 | 2.0 | 1.45 |
| Michael Pineda | LAA | sp | 32 | 7 | 4 | 2 | 3 | 2 | 1 | 0 | 6 | 9.4 | 2.9 | 12.6 | 8.9 | 0.2 | 3.1 | 1.36 |
| Nick Pivetta | Atl | mr | 28 | 2 | 0 | 1 | 4 | 0 | 0 | 2 | 1 | 8.7 | 2.6 | 12.5 | 3.5 | 0.6 | 1.4 | 1.25 |
| Zach Plesac | Cin | sp | 26 | 1 | 1 | 3 | 7 | 3 | 0 | 0 | 3 | 7.7 | 1.5 | 9.5 | 9.0 | 1.2 | 6.2 | 1.01 |
| Adam Plutko | Bos | mr | 29 | 2 | 2 | 1 | 6 | 0 | 1 | 0 | 1 | 8.1 | 2.3 | 11.0 | 4.1 | 1.0 | 1.8 | 1.15 |
| Drew Pomeranz* | NYY | mr | 32 | 7 | 3 | 0 | 0 | 2 | 0 | 1 | 2 | 4.2 | 5.6 | 9.8 | 13.2 | 0.0 | 2.4 | 1.09 |
| Cody Ponce | NYY | sp | 27 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 5.0 | 1.8 | 6.8 | 4.3 | 1.8 | 2.4 | 0.76 |
| Daniel Ponce de Leon | Hou | sp | 29 | 5 | 1 | 3 | 2 | 0 | 0 | 0 | 0 | 7.2 | 5.1 | 12.5 | 13.0 | 2.7 | 2.5 | 1.37 |
| Sean Poppen | Cin | mr | 27 | 2 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 10.6 | 3.9 | 14.5 | 10.6 | 1.0 | 2.8 | 1.61 |
| Rick Porcello | LAD | sp | 32 | 6 | 0 | 3 | 11 | 1 | 0 | 2 | 2 | 11.7 | 2.8 | 15.2 | 8.9 | 1.1 | 3.2 | 1.62 |
| Ryan Pressly | Mil | cl | 32 | 1 | 0 | 2 | 1 | 2 | 0 | 0 | 2 | 9.0 | 2.8 | 12.0 | 11.2 | 1.8 | 4.0 | 1.31 |
| Cal Quantrill | ChW | mr | 26 | 2 | 2 | 0 | 6 | 1 | 1 | 1 | 0 | 8.9 | 2.3 | 11.8 | 6.4 | 1.3 | 2.8 | 1.24 |
| Jose Quintana* | Mia | mr | 32 | 1 | 0 | 1 | 0 | 3 | 0 | 0 | 0 | 9.9 | 2.9 | 12.8 | 9.9 | 2.2 | 3.4 | 1.42 |
| Tanner Rainey | StL | mr | 28 | 0 | 0 | 0 | 1 | 2 | 0 | 0 | 2 | 5.1 | 1.1 | 6.8 | 11.8 | 1.7 | 10.5 | 0.69 |
| Brooks Raley* | Pit | mr | 33 | 0 | 1 | 0 | 12 | 0 | 0 | 0 | 0 | 6.0 | 2.9 | 10.9 | 9.9 | 2.2 | 3.5 | 0.99 |
| Erasmo Ramirez | Bos | mr | 31 | 1 | 3 | 0 | 0 | 1 | 1 | 1 | 0 | 5.2 | 2.1 | 7.3 | 6.2 | 0.6 | 2.9 | 0.81 |
| Nick Ramirez* | Cin | mr | 31 | 0 | 0 | 0 | 4 | 0 | 0 | 1 | 0 | 8.7 | 2.3 | 12.5 | 8.7 | 3.8 | 3.8 | 1.23 |
| Noe Ramirez | Mia | mr | 31 | 2 | 3 | 1 | 3 | 1 | 0 | 0 | 1 | 5.6 | 2.6 | 8.4 | 5.6 | 0.1 | 2.2 | 0.91 |
| Yohan Ramirez | KC | mr | 26 | 2 | 0 | 4 | 6 | 5 | 0 | 0 | 1 | 5.3 | 7.6 | 13.8 | 11.9 | 2.1 | 1.6 | 1.43 |
| Drew Rasmussen | NYM | mr | 25 | 0 | 0 | 5 | 1 | 1 | 0 | 0 | 1 | 10.7 | 5.8 | 16.7 | 12.8 | 2.6 | 2.2 | 1.83 |
| Robbie Ray* | StL | sp | 29 | 7 | 0 | 9 | 4 | 16 | 0 | 1 | 4 | 8.8 | 7.1 | 16.1 | 11.7 | 2.6 | 1.7 | 1.76 |
| Colin Rea | Sea | mr | 30 | 2 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 8.9 | 2.4 | 11.5 | 5.5 | 0.8 | 2.3 | 1.25 |
| Cody Reed* | ChC | mr | 28 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 9.4 | 7.8 | 17.2 | 7.0 | 2.0 | 0.9 | 1.91 |
| Sean Reid-Foley | Min | mr | 25 | 1 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 7.9 | 4.2 | 12.7 | 6.9 | 1.1 | 1.6 | 1.35 |
| Alex Reyes | ChW | mr | 26 | 4 | 1 | 0 | 2 | 12 | 0 | 1 | 1 | 8.3 | 7.4 | 16.0 | 11.9 | 0.7 | 1.6 | 1.74 |
| Garrett Richards | Mil | sp | 33 | 10 | 2 | 7 | 8 | 10 | 0 | 0 | 4 | 7.8 | 3.5 | 11.7 | 9.4 | 1.5 | 2.7 | 1.26 |
| Trevor Richards | KC | mr | 28 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 15.4 | 6.8 | 22.2 | 9.6 | 5.8 | 1.4 | 2.46 |
| Tanner Roark | Tor | sp | 34 | 2 | 4 | 0 | 9 | 10 | 0 | 0 | 1 | 12.8 | 4.9 | 18.3 | 7.9 | 1.9 | 1.6 | 1.97 |
| Hansel Robles | SD | mr | 30 | 3 | 1 | 7 | 4 | 4 | 0 | 0 | 1 | 8.4 | 6.7 | 15.6 | 10.0 | 1.9 | 1.5 | 1.67 |
| Carlos Rodon* | SF | sp | 28 | 0 | 1 | 0 | 9 | 7 | 0 | 0 | 1 | 9.1 | 5.1 | 17.2 | 7.1 | 0.7 | 1.4 | 1.57 |
| Joely Rodriguez* | Bal | mr | 29 | 1 | 0 | 0 | 1 | 4 | 1 | 0 | 0 | 8.2 | 2.9 | 11.3 | 9.5 | 1.0 | 3.3 | 1.23 |
| Richard Rodriguez | Sea | mr | 31 | 2 | 2 | 0 | 5 | 10 | 0 | 0 | 1 | 5.3 | 2.1 | 7.9 | 14.1 | 0.8 | 6.6 | 0.82 |
| Chaz Roe | Cle | mr | 34 | 2 | 0 | 2 | 4 | 1 | 0 | 0 | 3 | 8.8 | 4.0 | 13.8 | 9.0 | 0.8 | 2.3 | 1.42 |
| Taylor Rogers* | Mia | cl | 30 | 0 | 0 | 1 | 1 | 2 | 0 | 0 | 1 | 10.0 | 2.9 | 13.3 | 7.5 | 0.8 | 2.6 | 1.43 |
| Trevor Rogers* | KC | sp | 23 | 4 | 1 | 3 | 5 | 3 | 4 | 0 | 0 | 12.3 | 5.6 | 18.4 | 11.3 | 1.9 | 2.0 | 1.99 |
| Tyler Rogers | Cin | mr | 30 | 1 | 0 | 1 | 16 | 3 | 0 | 2 | 2 | 8.6 | 2.2 | 12.5 | 9.1 | 0.6 | 4.1 | 1.20 |
| Jordan Romano | ChC | mr | 28 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 2 | 6.8 | 3.9 | 10.7 | 11.7 | 2.5 | 3.0 | 1.19 |
| Sal Romano | Oak | mr | 27 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 15.2 | 6.8 | 21.9 | 5.1 | 0.0 | 0.8 | 2.44 |
| Sergio Romo | Col | mr | 38 | 2 | 0 | 0 | 7 | 3 | 0 | 1 | 2 | 8.3 | 4.2 | 13.3 | 8.6 | 1.5 | 2.0 | 1.39 |
| Hector Rondon | Tor | mr | 33 | 1 | 0 | 1 | 3 | 8 | 0 | 0 | 0 | 11.6 | 4.0 | 16.2 | 10.1 | 2.0 | 2.6 | 1.73 |
| Trevor Rosenthal | ChC | cl | 31 | 1 | 0 | 0 | 3 | 2 | 1 | 0 | 1 | 5.8 | 2.7 | 8.9 | 13.2 | 1.0 | 4.9 | 0.94 |
| Ramon Rosso | KC | mr | 25 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 9.6 | 4.8 | 14.4 | 9.6 | 2.4 | 2.0 | 1.60 |
| Jose Ruiz | Tex | mr | 26 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10.1 | 8.5 | 18.5 | 7.4 | 0.5 | 0.9 | 2.06 |
| Kyle Ryan* | SF | mr | 29 | 3 | 0 | 2 | 2 | 1 | 0 | 1 | 2 | 8.8 | 2.9 | 11.9 | 7.1 | 3.3 | 2.5 | 1.29 |
| Hyun Jin Ryu* | Ari | sp | 34 | 1 | 1 | 4 | 5 | 0 | 1 | 0 | 2 | 7.8 | 2.3 | 10.3 | 8.3 | 0.8 | 3.6 | 1.12 |
| Casey Sadler | SF | mr | 30 | 1 | 0 | 0 | 2 | 8 | 0 | 0 | 4 | 7.7 | 5.3 | 13.4 | 7.7 | 1.6 | 1.5 | 1.44 |
| Jeff Samardzija | Pit | sp | 36 | 4 | 0 | 0 | 8 | 0 | 0 | 1 | 1 | 13.3 | 1.1 | 15.9 | 4.6 | 4.9 | 4.2 | 1.60 |
| Anibal Sanchez | Tex | sp | 37 | 10 | 3 | 3 | 8 | 0 | 4 | 1 | 6 | 11.5 | 3.9 | 15.9 | 6.2 | 2.0 | 1.6 | 1.71 |
| Sixto Sanchez | Cle | sp | 22 | 7 | 1 | 0 | 9 | 4 | 0 | 0 | 0 | 9.5 | 2.5 | 12.6 | 8.6 | 0.9 | 3.4 | 1.33 |
| Patrick Sandoval* | Pit | sp | 24 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 7.9 | 2.1 | 10.2 | 5.3 | 1.7 | 2.5 | 1.11 |
| Dennis Santana | Hou | mr | 25 | 2 | 0 | 0 | 4 | 1 | 0 | 0 | 3 | 8.1 | 4.2 | 13.3 | 10.0 | 1.4 | 2.4 | 1.37 |
| Max Scherzer | Oak | sp | 36 | 12 | 2 | 3 | 3 | 15 | 0 | 1 | 5 | 8.7 | 3.1 | 11.9 | 12.0 | 1.1 | 3.9 | 1.31 |
| Clarke Schmidt | Phi | mr | 25 | 2 | 1 | 0 | 16 | 5 | 0 | 0 | 6 | 11.5 | 7.7 | 22.8 | 7.5 | 0.9 | 1.0 | 2.14 |
| John Schreiber | Pit | mr | 27 | 0 | 1 | 0 | 3 | 1 | 0 | 0 | 2 | 12.6 | 2.6 | 15.8 | 6.9 | 1.1 | 2.6 | 1.69 |
| Tanner Scott* | ChC | mr | 26 | 1 | 0 | 3 | 6 | 8 | 0 | 1 | 1 | 4.7 | 3.0 | 8.4 | 9.0 | 0.4 | 3.0 | 0.86 |
| Andre Scrubb | Was | mr | 26 | 0 | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 8.1 | 9.2 | 17.8 | 7.4 | 0.7 | 0.8 | 1.93 |
| Sam Selman* | StL | mr | 30 | 0 | 1 | 2 | 4 | 6 | 0 | 0 | 1 | 5.8 | 4.2 | 10.5 | 9.9 | 0.5 | 2.4 | 1.10 |
| Antonio Senzatela | Pit | sp | 26 | 11 | 3 | 0 | 8 | 0 | 0 | 3 | 7 | 9.3 | 1.8 | 11.4 | 5.5 | 1.2 | 3.0 | 1.24 |
| Justus Sheffield* | Phi | sp | 25 | 6 | 2 | 5 | 8 | 2 | 0 | 1 | 4 | 9.0 | 3.3 | 12.7 | 7.3 | 0.7 | 2.2 | 1.37 |
| Ryan Sherriff* | ChW | mr | 31 | 1 | 0 | 0 | 0 | 1 | 0 | 2 | 2 | 7.2 | 2.9 | 10.0 | 4.1 | 0.5 | 1.4 | 1.12 |
| Matt Shoemaker | Cle | sp | 34 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 6.8 | 2.8 | 9.6 | 8.0 | 1.7 | 2.8 | 1.06 |
| Matt Shoemaker | Sea | sp | 34 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 2 | 9.1 | 3.3 | 12.4 | 7.9 | 3.4 | 2.4 | 1.38 |
| Matt Shoemaker |   | sp | 34 | 5 | 0 | 0 | 0 | 1 | 0 | 1 | 3 | 7.8 | 3.0 | 10.8 | 8.0 | 2.5 | 2.6 | 1.20 |
| Chasen Shreve* | Bos | mr | 30 | 3 | 0 | 2 | 7 | 0 | 1 | 1 | 1 | 4.3 | 4.4 | 9.4 | 11.1 | 1.0 | 2.5 | 0.97 |
| Lucas Sims | Det | mr | 27 | 0 | 1 | 1 | 7 | 2 | 0 | 1 | 1 | 3.6 | 5.3 | 9.9 | 12.8 | 1.0 | 2.4 | 0.99 |
| Brady Singer | KC | sp | 24 | 4 | 3 | 4 | 6 | 9 | 3 | 2 | 1 | 8.6 | 3.4 | 12.3 | 10.1 | 1.2 | 2.9 | 1.34 |
| Tarik Skubal* | Sea | sp | 24 | 12 | 0 | 6 | 5 | 1 | 0 | 1 | 3 | 7.6 | 3.9 | 11.9 | 9.6 | 2.4 | 2.4 | 1.28 |
| Aaron Slegers | Mil | mr | 28 | 1 | 2 | 1 | 4 | 1 | 0 | 0 | 0 | 6.9 | 1.5 | 9.0 | 7.2 | 0.3 | 4.7 | 0.94 |
| Devin Smeltzer* | TB | mr | 25 | 10 | 1 | 4 | 12 | 4 | 1 | 0 | 8 | 11.6 | 3.6 | 16.0 | 8.2 | 1.6 | 2.3 | 1.69 |
| Burch Smith | Sea | mr | 31 | 0 | 2 | 1 | 0 | 1 | 0 | 2 | 0 | 4.9 | 1.3 | 6.1 | 8.9 | 0.2 | 6.9 | 0.68 |
| Caleb Smith* | Mil | sp | 29 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 2 | 7.0 | 5.4 | 12.6 | 7.4 | 2.0 | 1.4 | 1.38 |
| Drew Smith | Phi | mr | 27 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 5.7 | 2.8 | 8.5 | 8.5 | 0.9 | 3.0 | 0.95 |
| Josh A. Smith | Col | mr | 33 | 1 | 0 | 0 | 2 | 1 | 0 | 1 | 3 | 12.0 | 3.2 | 15.6 | 7.5 | 1.2 | 2.3 | 1.69 |
| Riley Smith | Det | mr | 26 | 4 | 0 | 4 | 0 | 3 | 0 | 0 | 1 | 6.7 | 4.4 | 11.1 | 12.4 | 0.5 | 2.8 | 1.23 |
| Will Smith* | Min | mr | 31 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 7.8 | 4.4 | 12.1 | 9.8 | 2.4 | 2.2 | 1.35 |
| Drew Smyly* | Hou | sp | 32 | 7 | 2 | 5 | 4 | 4 | 0 | 0 | 1 | 7.4 | 3.2 | 10.9 | 14.6 | 1.1 | 4.6 | 1.17 |
| Cy Sneed | KC | mr | 28 | 2 | 0 | 4 | 1 | 4 | 0 | 1 | 2 | 13.3 | 5.6 | 19.1 | 11.6 | 1.9 | 2.1 | 2.10 |
| Blake Snell* | LAD | sp | 28 | 3 | 1 | 2 | 3 | 17 | 0 | 1 | 2 | 8.6 | 2.7 | 11.5 | 11.2 | 2.2 | 4.2 | 1.26 |
| Chad Sobotka | Hou | mr | 27 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 1 | 18.0 | 9.0 | 27.0 | 3.0 | 3.0 | 0.3 | 3.00 |
| Joakim Soria | StL | mr | 37 | 0 | 1 | 0 | 2 | 2 | 0 | 0 | 1 | 7.5 | 2.6 | 10.3 | 8.9 | 0.5 | 3.5 | 1.11 |
| Mike Soroka | TB | sp | 23 | 1 | 0 | 3 | 3 | 5 | 0 | 0 | 0 | 9.1 | 4.7 | 14.3 | 6.0 | 0.6 | 1.3 | 1.53 |
| Gregory Soto* | StL | mr | 26 | 4 | 0 | 3 | 8 | 10 | 1 | 2 | 3 | 6.5 | 4.8 | 12.1 | 11.1 | 0.7 | 2.3 | 1.25 |
| Glenn Sparkman | Hou | mr | 29 | 2 | 0 | 3 | 0 | 1 | 0 | 0 | 0 | 19.9 | 7.1 | 27.0 | 7.1 | 1.4 | 1.0 | 3.00 |
| Jeffrey Springs* | TB | mr | 28 | 2 | 2 | 3 | 4 | 10 | 0 | 0 | 2 | 12.7 | 3.0 | 16.2 | 11.5 | 2.1 | 3.8 | 1.75 |
| Craig Stammen | Hou | mr | 37 | 7 | 1 | 1 | 9 | 3 | 0 | 0 | 1 | 8.9 | 2.3 | 12.1 | 8.3 | 0.5 | 3.7 | 1.24 |
| Cody Stashak | Cin | mr | 27 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 6.8 | 2.5 | 9.3 | 10.9 | 0.8 | 4.3 | 1.04 |
| Josh Staumont | TB | mr | 27 | 3 | 1 | 3 | 7 | 2 | 0 | 0 | 4 | 7.1 | 5.8 | 13.7 | 12.8 | 1.2 | 2.2 | 1.43 |
| Robert Stock | Cin | mr | 31 | 1 | 0 | 1 | 1 | 6 | 0 | 0 | 0 | 10.8 | 7.1 | 18.2 | 10.5 | 1.1 | 1.5 | 1.99 |
| Matt Strahm* | StL | mr | 29 | 2 | 0 | 7 | 27 | 4 | 1 | 1 | 0 | 7.4 | 3.2 | 14.1 | 6.5 | 1.6 | 2.0 | 1.18 |
| Stephen Strasburg | Cin | sp | 32 | 3 | 2 | 0 | 0 | 2 | 0 | 0 | 1 | 9.6 | 3.4 | 13.0 | 4.4 | 2.1 | 1.3 | 1.44 |
| Chris Stratton | StL | mr | 30 | 1 | 0 | 0 | 2 | 2 | 0 | 0 | 3 | 8.8 | 4.2 | 13.3 | 10.9 | 0.9 | 2.6 | 1.45 |
| Ross Stripling | Tex | sp | 31 | 4 | 2 | 2 | 3 | 0 | 0 | 0 | 1 | 12.5 | 5.4 | 18.1 | 8.0 | 2.8 | 1.5 | 1.99 |
| Pedro Strop | Col | mr | 36 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 8.0 | 8.0 | 16.0 | 5.0 | 0.0 | 0.6 | 1.78 |
| Andrew Suarez* | SF | mr | 28 | 3 | 0 | 0 | 1 | 5 | 0 | 0 | 4 | 10.7 | 8.3 | 19.4 | 6.2 | 0.7 | 0.8 | 2.12 |
| Jose Suarez* | Cle | sp | 23 | 2 | 0 | 0 | 2 | 5 | 0 | 0 | 0 | 16.8 | 5.8 | 23.5 | 4.4 | 2.7 | 0.8 | 2.51 |
| Ranger Suarez* | Cle | mr | 25 | 1 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 13.5 | 7.9 | 25.9 | 4.5 | 1.1 | 0.6 | 2.38 |
| Wander Suero | Tor | mr | 29 | 9 | 0 | 0 | 11 | 5 | 0 | 1 | 3 | 8.3 | 3.4 | 12.9 | 11.2 | 0.4 | 3.3 | 1.30 |
| Cole Sulser | Mil | cl | 31 | 2 | 0 | 0 | 3 | 2 | 0 | 0 | 2 | 6.7 | 4.4 | 11.6 | 7.9 | 0.9 | 1.8 | 1.23 |
| Brent Suter* | LAD | mr | 31 | 1 | 0 | 1 | 8 | 2 | 1 | 1 | 1 | 7.4 | 1.6 | 9.6 | 11.6 | 1.1 | 7.1 | 1.00 |
| Masahiro Tanaka | ChW | sp | 32 | 1 | 0 | 0 | 7 | 0 | 0 | 0 | 5 | 9.3 | 2.1 | 11.7 | 8.9 | 1.1 | 4.2 | 1.26 |
| Stephen Tarpley* | Cin | mr | 28 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.4 | 4.3 | 5.7 | 11.4 | 0.0 | 2.7 | 0.63 |
| Dillon Tate | Pit | mr | 27 | 0 | 0 | 1 | 5 | 1 | 0 | 0 | 1 | 6.3 | 2.8 | 10.2 | 7.8 | 0.2 | 2.8 | 1.01 |
| Blake Taylor* | ChW | mr | 25 | 5 | 0 | 1 | 3 | 3 | 1 | 0 | 3 | 6.1 | 3.8 | 10.3 | 6.0 | 0.7 | 1.6 | 1.10 |
| Josh Taylor* | Atl | mr | 28 | 2 | 0 | 1 | 2 | 0 | 0 | 0 | 1 | 7.1 | 5.8 | 13.3 | 5.1 | 1.3 | 0.9 | 1.43 |
| Julio Teheran | Tex | sp | 30 | 6 | 4 | 4 | 6 | 3 | 0 | 1 | 2 | 11.4 | 4.8 | 16.6 | 6.1 | 2.9 | 1.3 | 1.80 |
| Ryan Tepera | Tor | mr | 33 | 1 | 1 | 1 | 1 | 3 | 0 | 0 | 0 | 11.0 | 6.3 | 17.5 | 13.7 | 0.6 | 2.2 | 1.92 |
| Caleb Thielbar* | Mia | mr | 34 | 1 | 0 | 2 | 1 | 6 | 0 | 1 | 3 | 8.6 | 4.3 | 13.1 | 8.9 | 0.4 | 2.1 | 1.44 |
| Ryan Thompson | Oak | mr | 29 | 3 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 10.1 | 2.7 | 13.0 | 5.3 | 1.6 | 1.9 | 1.43 |
| Trent Thornton | SF | sp | 27 | 7 | 0 | 0 | 1 | 0 | 0 | 0 | 5 | 20.7 | 4.4 | 25.3 | 6.6 | 0.8 | 1.5 | 2.79 |
| Lewis Thorpe* | Tex | mr | 25 | 3 | 1 | 2 | 3 | 3 | 0 | 1 | 4 | 14.2 | 4.7 | 19.2 | 4.9 | 3.0 | 1.0 | 2.10 |
| Jesus Tinoco | SF | mr | 26 | 0 | 0 | 0 | 1 | 4 | 0 | 0 | 1 | 6.4 | 9.8 | 16.7 | 6.9 | 1.0 | 0.7 | 1.80 |
| Josh Tomlin | Mia | mr | 36 | 3 | 0 | 0 | 6 | 4 | 0 | 0 | 7 | 8.7 | 1.5 | 10.5 | 8.9 | 1.4 | 6.1 | 1.13 |
| Justin Topa | NYY | mr | 30 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.7 | 2.4 | 11.1 | 9.5 | 0.8 | 4.0 | 1.24 |
| Touki Toussaint | LAA | sp | 25 | 1 | 2 | 0 | 5 | 2 | 0 | 0 | 1 | 11.2 | 4.6 | 17.2 | 11.2 | 3.3 | 2.4 | 1.76 |
| Blake Treinen | ChC | mr | 33 | 5 | 1 | 1 | 11 | 9 | 3 | 1 | 3 | 9.2 | 3.0 | 13.2 | 9.1 | 0.6 | 3.0 | 1.35 |
| Andrew Triggs | Mil | mr | 32 | 0 | 0 | 0 | 0 | 2 | 2 | 0 | 0 | 13.9 | 2.9 | 16.8 | 8.0 | 3.6 | 2.8 | 1.86 |
| Lou Trivino | Atl | mr | 29 | 0 | 1 | 0 | 1 | 1 | 0 | 1 | 0 | 6.3 | 3.2 | 9.7 | 11.6 | 1.3 | 3.7 | 1.05 |
| Nick Tropeano | LAA | mr | 30 | 4 | 1 | 1 | 2 | 7 | 1 | 1 | 4 | 10.2 | 2.9 | 13.3 | 9.8 | 0.8 | 3.4 | 1.45 |
| Nik Turley* | ChW | mr | 31 | 2 | 0 | 0 | 10 | 1 | 0 | 1 | 2 | 4.7 | 2.6 | 8.5 | 8.6 | 0.5 | 3.3 | 0.81 |
| Spencer Turnbull | Bal | sp | 28 | 19 | 5 | 1 | 8 | 0 | 0 | 2 | 3 | 7.6 | 4.6 | 12.6 | 8.7 | 0.8 | 1.9 | 1.36 |
| Duane Underwood | Atl | mr | 26 | 5 | 1 | 2 | 4 | 7 | 0 | 0 | 1 | 12.3 | 2.1 | 14.9 | 13.0 | 2.1 | 6.3 | 1.60 |
| Jose Urena | Min | sp | 29 | 2 | 2 | 7 | 7 | 3 | 1 | 3 | 4 | 8.8 | 4.3 | 13.8 | 6.4 | 1.0 | 1.5 | 1.46 |
| Julio Urias* | Bal | sp | 24 | 9 | 4 | 6 | 4 | 2 | 0 | 0 | 7 | 7.5 | 3.0 | 10.7 | 6.7 | 0.7 | 2.2 | 1.17 |
| Jose Urquidy | Sea | sp | 26 | 5 | 4 | 0 | 7 | 2 | 0 | 1 | 3 | 6.4 | 3.4 | 10.4 | 6.0 | 1.2 | 1.8 | 1.09 |
| Cesar Valdez | Oak | cl | 36 | 2 | 0 | 2 | 0 | 3 | 0 | 1 | 2 | 4.5 | 3.5 | 8.1 | 8.5 | 0.2 | 2.4 | 0.90 |
| Framber Valdez* | Mia | sp | 27 | 9 | 4 | 6 | 12 | 16 | 3 | 0 | 9 | 8.6 | 2.0 | 11.1 | 9.4 | 0.4 | 4.6 | 1.17 |
| Phillips Valdez | Mia | mr | 29 | 4 | 0 | 0 | 6 | 1 | 0 | 0 | 2 | 9.7 | 5.1 | 15.5 | 7.8 | 0.6 | 1.5 | 1.64 |
| Vince Velasquez | Tor | sp | 29 | 1 | 2 | 0 | 7 | 3 | 1 | 0 | 1 | 13.9 | 4.7 | 19.3 | 12.1 | 2.0 | 2.6 | 2.07 |
| Justin Verlander | Hou | sp | 38 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14.1 | 5.1 | 19.3 | 9.6 | 1.3 | 1.9 | 2.14 |
| Nick Vincent | Phi | mr | 34 | 2 | 0 | 0 | 1 | 2 | 0 | 0 | 0 | 7.4 | 2.7 | 10.3 | 6.8 | 3.0 | 2.5 | 1.13 |
| Austin Voth | KC | sp | 29 | 6 | 4 | 0 | 17 | 0 | 0 | 1 | 4 | 9.6 | 3.7 | 14.2 | 7.7 | 2.4 | 2.1 | 1.48 |
| Jacob Waguespack | Tor | mr | 27 | 0 | 1 | 0 | 0 | 2 | 0 | 0 | 1 | 18.6 | 4.2 | 22.8 | 8.0 | 1.7 | 1.9 | 2.53 |
| Adam Wainwright | Col | sp | 39 | 0 | 0 | 0 | 6 | 1 | 0 | 0 | 2 | 9.7 | 2.8 | 12.8 | 8.7 | 1.6 | 3.1 | 1.39 |
| Taijuan Walker | Hou | sp | 28 | 29 | 7 | 15 | 8 | 6 | 0 | 0 | 6 | 7.6 | 3.2 | 11.2 | 8.5 | 1.2 | 2.6 | 1.20 |
| Tony Watson* | Sea | mr | 36 | 2 | 0 | 3 | 4 | 0 | 0 | 0 | 2 | 5.0 | 1.9 | 7.5 | 7.9 | 0.9 | 4.2 | 0.77 |
| Luke Weaver | ChW | sp | 27 | 3 | 2 | 0 | 2 | 0 | 0 | 1 | 5 | 10.2 | 3.3 | 13.7 | 10.4 | 1.3 | 3.2 | 1.50 |
| Jacob Webb | TB | mr | 27 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.1 | 4.8 | 12.9 | 9.3 | 0.3 | 1.9 | 1.43 |
| Logan Webb | Bos | sp | 24 | 8 | 0 | 3 | 13 | 7 | 0 | 0 | 7 | 10.3 | 3.8 | 14.8 | 7.2 | 1.3 | 1.9 | 1.57 |
| Tyler Webb* | NYY | mr | 30 | 2 | 2 | 0 | 0 | 5 | 1 | 0 | 0 | 7.9 | 3.8 | 11.7 | 8.2 | 1.6 | 2.2 | 1.30 |
| Ryan Weber | Cle | mr | 30 | 0 | 1 | 2 | 9 | 2 | 1 | 0 | 3 | 8.9 | 3.1 | 12.6 | 5.8 | 1.4 | 1.9 | 1.33 |
| Jordan Weems | Oak | mr | 28 | 1 | 1 | 0 | 0 | 4 | 0 | 0 | 1 | 9.8 | 6.8 | 16.6 | 8.6 | 1.8 | 1.3 | 1.84 |
| J.B. Wendelken | Was | mr | 28 | 3 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 5.3 | 2.3 | 7.7 | 8.5 | 0.3 | 3.6 | 0.85 |
| Zack Wheeler | SF | sp | 31 | 5 | 4 | 2 | 26 | 0 | 0 | 0 | 5 | 7.9 | 2.2 | 11.1 | 7.2 | 0.4 | 3.2 | 1.13 |
| Mitch White | Mil | mr | 26 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 15.2 | 0.0 | 15.2 | 3.4 | 0.0 | 99.0 | 1.69 |
| Kodi Whitley | Tex | mr | 26 | 1 | 0 | 2 | 1 | 2 | 0 | 0 | 1 | 9.9 | 4.9 | 15.1 | 4.3 | 1.6 | 0.9 | 1.65 |
| Rowan Wick | NYM | mr | 28 | 3 | 3 | 3 | 4 | 2 | 0 | 1 | 1 | 12.4 | 3.7 | 16.6 | 11.3 | 0.6 | 3.0 | 1.79 |
| Taylor Widener | LAD | mr | 26 | 1 | 1 | 4 | 4 | 0 | 0 | 0 | 2 | 6.0 | 5.4 | 12.1 | 9.8 | 1.9 | 1.8 | 1.27 |
| Brad Wieck* | Oak | mr | 29 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.2 | 2.2 | 4.3 | 5.4 | 0.0 | 2.5 | 0.48 |
| Devin Williams | NYY | mr | 26 | 2 | 0 | 0 | 2 | 4 | 0 | 0 | 2 | 2.5 | 2.8 | 5.5 | 15.8 | 0.4 | 5.7 | 0.58 |
| Taylor Williams | Det | cl | 29 | 0 | 0 | 0 | 1 | 2 | 0 | 0 | 2 | 7.5 | 1.3 | 9.4 | 9.4 | 0.6 | 7.5 | 0.98 |
| Trevor Williams | LAD | sp | 29 | 3 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 11.3 | 5.5 | 17.2 | 9.8 | 2.0 | 1.8 | 1.87 |
| Bryse Wilson | Ari | mr | 23 | 0 | 1 | 0 | 1 | 3 | 0 | 2 | 0 | 9.1 | 5.5 | 14.9 | 9.1 | 1.7 | 1.6 | 1.62 |
| Justin Wilson* | Mil | mr | 33 | 0 | 1 | 5 | 4 | 12 | 2 | 0 | 4 | 8.0 | 4.7 | 13.2 | 8.9 | 0.5 | 1.9 | 1.41 |
| Dan Winkler | Tex | mr | 31 | 1 | 0 | 0 | 2 | 1 | 5 | 0 | 1 | 6.7 | 4.0 | 11.0 | 9.3 | 0.8 | 2.3 | 1.19 |
| Matt Wisler | Sea | mr | 28 | 6 | 3 | 0 | 6 | 2 | 3 | 1 | 0 | 6.3 | 5.2 | 12.0 | 12.2 | 0.9 | 2.3 | 1.28 |
| Nick Wittgren | Was | mr | 30 | 1 | 0 | 0 | 11 | 0 | 1 | 0 | 2 | 7.7 | 1.7 | 10.6 | 10.8 | 1.8 | 6.6 | 1.03 |
| Asher Wojciechowski | Ari | sp | 32 | 18 | 4 | 1 | 6 | 2 | 1 | 0 | 1 | 11.4 | 3.7 | 15.5 | 7.0 | 3.1 | 1.9 | 1.67 |
| Jake Woodford | Pit | mr | 24 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 10.7 | 1.0 | 12.0 | 8.0 | 3.0 | 8.0 | 1.30 |
| Brandon Woodruff | Cin | sp | 28 | 9 | 4 | 1 | 17 | 2 | 0 | 0 | 2 | 7.8 | 2.5 | 10.9 | 12.0 | 0.9 | 4.8 | 1.14 |
| Brandon Workman | Col | cl | 32 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 18.4 | 4.9 | 23.8 | 9.2 | 3.8 | 1.9 | 2.58 |
| Kyle Wright | TB | sp | 25 | 9 | 2 | 10 | 2 | 2 | 0 | 2 | 0 | 9.0 | 5.8 | 15.0 | 7.5 | 1.8 | 1.3 | 1.65 |
| Miguel Yajure | LAA | mr | 23 | 3 | 1 | 1 | 2 | 5 | 0 | 1 | 3 | 9.1 | 6.1 | 15.6 | 5.5 | 1.0 | 0.9 | 1.69 |
| Shun Yamaguchi | TB | mr | 33 | 1 | 1 | 3 | 2 | 8 | 1 | 0 | 2 | 8.9 | 6.4 | 15.6 | 9.1 | 2.3 | 1.4 | 1.70 |
| Ryan Yarbrough* | LAA | sp | 29 | 5 | 2 | 3 | 27 | 4 | 0 | 1 | 3 | 8.9 | 1.2 | 11.4 | 6.3 | 0.7 | 5.2 | 1.12 |
| Eric Yardley | Bos | mr | 30 | 1 | 0 | 3 | 1 | 0 | 0 | 0 | 1 | 6.4 | 4.0 | 10.6 | 8.9 | 0.7 | 2.2 | 1.16 |
| Huascar Ynoa | Bos | sp | 23 | 3 | 0 | 2 | 7 | 6 | 0 | 0 | 2 | 9.6 | 5.0 | 15.5 | 6.8 | 1.2 | 1.4 | 1.62 |
| Alex Young* | Atl | mr | 27 | 0 | 1 | 7 | 2 | 0 | 0 | 0 | 3 | 12.4 | 5.0 | 17.7 | 6.1 | 2.9 | 1.2 | 1.93 |
| T.J. Zeuch | Atl | mr | 25 | 1 | 0 | 4 | 0 | 1 | 0 | 0 | 2 | 13.8 | 6.1 | 19.8 | 4.4 | 2.2 | 0.7 | 2.20 |
| Kyle Zimmer | ChW | mr | 29 | 7 | 0 | 0 | 2 | 8 | 0 | 1 | 1 | 5.8 | 3.6 | 9.7 | 9.4 | 0.0 | 2.6 | 1.05 |
| Bruce Zimmermann* | StL | sp | 26 | 2 | 0 | 2 | 5 | 0 | 0 | 1 | 1 | 8.3 | 6.6 | 17.6 | 6.6 | 1.1 | 1.0 | 1.65 |
| Jordan Zimmermann | Cle | sp | 35 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 14.6 | 3.4 | 18.1 | 7.2 | 1.1 | 2.1 | 2.01 |
| Tyler Zuber | Atl | mr | 26 | 0 | 0 | 4 | 3 | 1 | 0 | 2 | 2 | 5.8 | 9.1 | 15.3 | 12.2 | 2.1 | 1.3 | 1.66 |
| Analytical |
| Name | Team | P | Age | OPS | BIP | IPAVG | TBW | TBW/BF | TBWH | TBWH/BF | RC | RC27 | RCERA | CERA |
| Bryan Abreu | Hou | mr | 24 | .817 | 10 | .400 | 5 | .417 | 5 | .417 | 1.6 | 5.4 | 4.30 | 5.72 |
| Jason Adam | Tor | mr | 29 | .789 | 92 | .348 | 96 | .511 | 98 | .521 | 26.6 | 5.6 | 5.00 | 4.80 |
| Austin Adams | LAA | mr | 30 | .873 | 3 | .667 | 5 | .556 | 5 | .556 | 1.6 | 8.4 | 7.60 | 7.49 |
| Keegan Akin* | Min | sp | 26 | .699 | 268 | .310 | 205 | .447 | 208 | .453 | 50.2 | 4.2 | 3.76 | 3.42 |
| Jorge Alcala | Col | mr | 25 | .773 | 104 | .375 | 76 | .463 | 76 | .463 | 20.8 | 5.0 | 4.44 | 4.59 |
| Sandy Alcantara | SD | sp | 25 | .742 | 274 | .296 | 219 | .468 | 225 | .481 | 54.2 | 4.4 | 4.05 | 4.56 |
| Scott Alexander* | LAD | mr | 31 | .771 | 123 | .309 | 80 | .468 | 80 | .468 | 21.0 | 4.9 | 4.43 | 5.23 |
| Tyler Alexander* | LAD | mr | 26 | .761 | 108 | .361 | 74 | .430 | 80 | .465 | 20.5 | 4.6 | 4.08 | 4.96 |
| Kolby Allard* | Min | sp | 23 | .804 | 389 | .301 | 285 | .495 | 292 | .507 | 84.2 | 6.1 | 5.58 | 5.67 |
| Yency Almonte | Mia | mr | 27 | .589 | 252 | .262 | 123 | .326 | 139 | .369 | 28.5 | 2.7 | 2.47 | 2.56 |
| Dan Altavilla | Tex | mr | 28 | .859 | 184 | .370 | 159 | .526 | 162 | .536 | 50.2 | 7.1 | 6.52 | 6.36 |
| Jose Alvarado* | Pit | mr | 26 | .764 | 38 | .395 | 25 | .397 | 28 | .444 | 8.5 | 5.8 | 5.61 | 6.18 |
| Jose Alvarez* | Cin | mr | 32 | .513 | 30 | .200 | 16 | .340 | 16 | .340 | 2.8 | 2.1 | 1.91 | 1.57 |
| Adbert Alzolay | ChC | sp | 26 | .478 | 120 | .242 | 85 | .321 | 86 | .325 | 13.9 | 1.8 | 1.65 | 1.62 |
| Brett Anderson* | TB | sp | 33 | .877 | 512 | .334 | 381 | .540 | 393 | .557 | 118.7 | 6.8 | 6.18 | 5.88 |
| Chase Anderson | TB | sp | 33 | 1.003 | 347 | .372 | 354 | .640 | 361 | .653 | 118.6 | 8.9 | 8.07 | 7.75 |
| Ian Anderson | SF | sp | 23 | .552 | 312 | .247 | 177 | .344 | 183 | .355 | 37.7 | 2.6 | 2.41 | 2.24 |
| Nick Anderson | SD | cl | 30 | .343 | 166 | .199 | 66 | .212 | 67 | .215 | 9.0 | 0.9 | 0.85 | 0.84 |
| Shaun Anderson | SF | mr | 26 | .745 | 105 | .276 | 94 | .487 | 96 | .497 | 24.4 | 5.0 | 4.52 | 4.31 |
| Tyler Anderson* | Oak | sp | 31 | .764 | 429 | .298 | 283 | .456 | 297 | .478 | 81.9 | 5.3 | 4.80 | 4.76 |
| Matt Andriese | SF | mr | 31 | .649 | 207 | .213 | 156 | .438 | 156 | .438 | 30.8 | 3.0 | 2.78 | 2.93 |
| Tejay Antone | ChW | mr | 27 | .566 | 238 | .193 | 172 | .390 | 173 | .392 | 31.4 | 2.5 | 2.26 | 2.05 |
| Shawn Armstrong | Hou | mr | 30 | .580 | 71 | .254 | 36 | .350 | 38 | .369 | 8.0 | 2.8 | 2.54 | 2.18 |
| Shawn Armstrong | Mil | mr | 30 | .561 | 49 | .224 | 28 | .346 | 30 | .370 | 6.1 | 2.7 | 2.50 | 2.27 |
| Shawn Armstrong |   | mr | 30 | .572 | 120 | .242 | 64 | .348 | 68 | .370 | 14.1 | 2.8 | 2.52 | 2.22 |
| Jake Arrieta | KC | sp | 35 | .914 | 432 | .366 | 353 | .559 | 357 | .565 | 110.3 | 7.3 | 6.58 | 7.36 |
| Luis Avilan* | LAD | mr | 31 | .397 | 10 | .200 | 3 | .231 | 3 | .231 | 0.2 | 0.4 | 0.35 | 1.09 |
| Dakota Bacus | Cin | mr | 30 | .871 | 10 | .400 | 6 | .500 | 6 | .500 | 1.3 | 3.9 | 3.55 | 5.72 |
| Dakota Bacus | Cle | mr | 30 | .975 | 104 | .327 | 86 | .589 | 88 | .603 | 30.6 | 9.6 | 8.97 | 9.26 |
| Dakota Bacus |   | mr | 30 | .966 | 114 | .333 | 92 | .582 | 94 | .595 | 31.8 | 9.0 | 8.41 | 8.91 |
| Pedro Baez | Col | mr | 33 | .682 | 207 | .246 | 133 | .440 | 134 | .444 | 32.2 | 4.1 | 3.75 | 3.53 |
| Brandon Bailey | Min | mr | 26 | .697 | 69 | .188 | 45 | .437 | 48 | .466 | 10.9 | 4.0 | 3.68 | 3.90 |
| Homer Bailey | SF | sp | 35 | .871 | 90 | .389 | 69 | .500 | 72 | .522 | 23.1 | 7.5 | 6.94 | 8.21 |
| Caleb Baragar* | Det | mr | 27 | .561 | 238 | .193 | 119 | .360 | 121 | .366 | 23.4 | 2.4 | 2.17 | 1.75 |
| Daniel Bard | NYY | cl | 36 | .572 | 179 | .251 | 105 | .345 | 114 | .375 | 22.4 | 2.7 | 2.39 | 2.22 |
| Scott Barlow | Bos | mr | 28 | .697 | 190 | .347 | 155 | .428 | 160 | .442 | 40.5 | 4.2 | 3.76 | 3.72 |
| Jacob Barnes | Was | mr | 31 | .867 | 17 | .471 | 16 | .533 | 16 | .533 | 4.8 | 6.5 | 5.88 | 6.18 |
| Matt Barnes | Min | cl | 31 | .591 | 166 | .229 | 113 | .369 | 121 | .395 | 22.4 | 2.6 | 2.34 | 2.74 |
| Jaime Barria | Atl | sp | 24 | .549 | 248 | .190 | 127 | .354 | 131 | .365 | 24.9 | 2.4 | 2.20 | 1.84 |
| Tyler Bashlor | Phi | mr | 28 | 1.222 | 59 | .373 | 62 | .721 | 66 | .767 | 24.3 | 13.1 | 12.03 | 12.17 |
| Anthony Bass | Mil | cl | 33 | .435 | 315 | .162 | 122 | .274 | 127 | .285 | 20.6 | 1.5 | 1.41 | 1.14 |
| Chris Bassitt | Was | sp | 32 | .705 | 586 | .275 | 371 | .440 | 378 | .448 | 93.2 | 4.1 | 3.78 | 3.59 |
| Trevor Bauer | Det | sp | 30 | .515 | 490 | .235 | 295 | .326 | 306 | .338 | 57.3 | 2.2 | 1.98 | 1.65 |
| Cam Bedrosian | Ari | mr | 29 | .614 | 132 | .242 | 74 | .383 | 75 | .389 | 16.4 | 3.1 | 2.81 | 2.56 |
| Jalen Beeks* | Bos | mr | 27 | .749 | 189 | .429 | 126 | .430 | 129 | .440 | 35.7 | 4.7 | 4.21 | 4.03 |
| Wes Benjamin* | Mia | mr | 27 | .636 | 136 | .272 | 75 | .393 | 76 | .398 | 18.6 | 3.8 | 3.40 | 3.11 |
| Travis Bergen* | Mia | mr | 27 | .250 | 3 | .000 | 1 | .250 | 1 | .250 | 0.2 | 1.8 | 1.58 | 0.94 |
| Jose Berrios | Cin | sp | 27 | .819 | 490 | .331 | 435 | .512 | 446 | .525 | 126.3 | 6.0 | 5.43 | 5.71 |
| Dellin Betances | Oak | mr | 33 | .832 | 15 | .533 | 17 | .515 | 17 | .515 | 5.4 | 7.2 | 6.20 | 6.15 |
| Joe Biagini | Tor | mr | 31 | 1.092 | 39 | .462 | 36 | .632 | 37 | .649 | 14.3 | 13.8 | 11.97 | 13.23 |
| Shane Bieber | Col | sp | 26 | .582 | 362 | .293 | 288 | .375 | 293 | .381 | 58.2 | 2.7 | 2.45 | 2.37 |
| Brandon Bielak | Cle | sp | 25 | 1.105 | 279 | .330 | 311 | .694 | 323 | .721 | 110.5 | 11.0 | 10.09 | 10.44 |
| Ray Black | ChW | mr | 31 | .641 | 30 | .300 | 17 | .395 | 17 | .395 | 4.3 | 4.0 | 3.63 | 3.34 |
| Richard Bleier* | TB | mr | 34 | .571 | 168 | .232 | 74 | .344 | 77 | .358 | 14.1 | 2.3 | 2.05 | 1.82 |
| Scott Blewett | Tex | mr | 25 | .895 | 57 | .333 | 47 | .553 | 47 | .553 | 14.3 | 7.0 | 6.54 | 6.75 |
| Ryan Borucki* | Min | mr | 27 | .595 | 95 | .284 | 65 | .378 | 67 | .390 | 14.3 | 3.2 | 2.94 | 2.77 |
| Brad Boxberger | Tex | mr | 33 | .917 | 213 | .305 | 206 | .575 | 212 | .592 | 59.9 | 6.7 | 6.14 | 6.87 |
| Matthew Boyd* | LAA | sp | 30 | .966 | 301 | .312 | 290 | .618 | 295 | .629 | 93.6 | 8.4 | 7.66 | 7.44 |
| Brad Brach | Phi | mr | 35 | .665 | 118 | .263 | 91 | .408 | 99 | .444 | 21.7 | 3.9 | 3.51 | 3.92 |
| Archie Bradley | Was | cl | 28 | .803 | 146 | .384 | 99 | .465 | 103 | .484 | 31.9 | 6.1 | 5.53 | 5.63 |
| Ryan Brasier | StL | mr | 33 | .760 | 155 | .335 | 128 | .481 | 129 | .485 | 35.9 | 5.5 | 5.02 | 5.02 |
| Steven Brault* | Mil | sp | 29 | .627 | 377 | .305 | 220 | .359 | 237 | .387 | 53.9 | 3.4 | 3.14 | 3.56 |
| Ben Braymer* | ChW | mr | 27 | .724 | 73 | .370 | 47 | .423 | 47 | .423 | 12.8 | 4.7 | 4.21 | 4.97 |
| Colten Brewer | Tor | mr | 28 | .873 | 279 | .287 | 240 | .562 | 245 | .574 | 71.6 | 6.9 | 6.21 | 5.89 |
| Austin Brice | SF | mr | 29 | .816 | 104 | .288 | 97 | .522 | 100 | .538 | 28.7 | 6.4 | 5.91 | 5.50 |
| Zack Britton* | Oak | cl | 33 | .443 | 163 | .160 | 70 | .294 | 72 | .303 | 11.9 | 1.8 | 1.65 | 1.47 |
| Connor Brogdon | Pit | mr | 26 | .641 | 75 | .200 | 55 | .440 | 55 | .440 | 10.8 | 2.9 | 2.76 | 2.50 |
| JT Brubaker | Mia | sp | 27 | .704 | 274 | .274 | 198 | .446 | 202 | .455 | 49.5 | 4.2 | 3.80 | 3.72 |
| Kris Bubic* | Atl | sp | 23 | .739 | 489 | .321 | 337 | .451 | 342 | .457 | 89.1 | 4.6 | 4.24 | 4.63 |
| Walker Buehler | Was | sp | 26 | .552 | 364 | .190 | 230 | .369 | 233 | .373 | 42.4 | 2.3 | 2.11 | 1.97 |
| Madison Bumgarner* | LAA | sp | 31 | .909 | 218 | .275 | 173 | .577 | 181 | .603 | 52.9 | 7.0 | 6.24 | 5.84 |
| Aaron Bummer* | ChC | mr | 27 | .604 | 73 | .342 | 49 | .368 | 49 | .368 | 11.4 | 3.3 | 3.01 | 3.33 |
| Dylan Bundy | NYY | sp | 28 | .593 | 540 | .276 | 328 | .364 | 341 | .378 | 72.8 | 2.9 | 2.62 | 2.28 |
| Corbin Burnes | NYY | sp | 26 | .455 | 361 | .260 | 209 | .286 | 217 | .297 | 37.2 | 1.8 | 1.62 | 1.40 |
| Ty Buttrey | NYM | mr | 28 | .698 | 299 | .284 | 184 | .441 | 185 | .444 | 47.7 | 4.3 | 3.89 | 2.98 |
| Genesis Cabrera* | Oak | mr | 24 | .626 | 114 | .237 | 104 | .403 | 112 | .434 | 22.4 | 3.3 | 3.04 | 3.62 |
| Trevor Cahill | Bal | sp | 33 | .599 | 190 | .200 | 157 | .399 | 164 | .417 | 34.5 | 3.3 | 2.99 | 3.04 |
| Griffin Canning | TB | sp | 25 | .825 | 474 | .340 | 397 | .519 | 401 | .524 | 111.3 | 5.8 | 5.33 | 5.33 |
| Carlos Carrasco | StL | sp | 34 | .724 | 449 | .325 | 357 | .448 | 368 | .462 | 89.5 | 4.2 | 3.85 | 4.01 |
| Daniel Castano* | Cle | sp | 26 | .841 | 359 | .312 | 235 | .510 | 239 | .518 | 74.7 | 6.8 | 6.15 | 6.39 |
| Ryan Castellani | Atl | sp | 25 | .784 | 443 | .221 | 331 | .491 | 351 | .521 | 90.0 | 5.3 | 4.78 | 5.02 |
| Humberto Castellanos | Pit | mr | 23 | 1.333 | 27 | .519 | 43 | .811 | 44 | .830 | 19.2 | 20.8 | 17.96 | 19.92 |
| Diego Castillo | Cin | mr | 27 | .511 | 215 | .172 | 124 | .336 | 132 | .358 | 24.1 | 2.4 | 2.17 | 2.00 |
| Luis Castillo | Phi | sp | 28 | .680 | 509 | .332 | 378 | .426 | 383 | .431 | 93.1 | 3.9 | 3.57 | 3.27 |
| Miguel Castro | Sea | mr | 26 | .797 | 138 | .391 | 113 | .487 | 116 | .500 | 29.8 | 4.9 | 4.49 | 4.69 |
| Dylan Cease | SD | sp | 25 | .792 | 228 | .211 | 181 | .511 | 191 | .540 | 45.2 | 4.8 | 4.41 | 4.39 |
| Blake Cederlind | Oak | mr | 25 | 1.098 | 19 | .421 | 17 | .654 | 17 | .654 | 5.9 | 9.9 | 8.94 | 10.48 |
| Luis Cessa | SD | mr | 29 | .895 | 186 | .344 | 152 | .569 | 154 | .577 | 47.3 | 7.2 | 6.57 | 5.52 |
| Andrew Chafin* | Phi | mr | 31 | 1.002 | 97 | .320 | 99 | .660 | 99 | .660 | 30.2 | 8.2 | 7.50 | 8.04 |
| Aroldis Chapman* | Tor | mr | 33 | .837 | 76 | .355 | 87 | .565 | 88 | .571 | 23.7 | 5.8 | 5.33 | 4.35 |
| Tyler Chatwood | SF | sp | 31 | .885 | 198 | .449 | 190 | .538 | 193 | .547 | 63.5 | 8.0 | 7.24 | 7.02 |
| Jesse Chavez | Ari | mr | 37 | .981 | 223 | .327 | 221 | .614 | 226 | .628 | 72.1 | 8.5 | 7.86 | 8.29 |
| Yonny Chirinos | Det | sp | 27 | .812 | 55 | .400 | 40 | .476 | 41 | .488 | 11.8 | 5.8 | 5.20 | 5.95 |
| Adam Cimber | Tex | mr | 30 | .795 | 185 | .330 | 117 | .472 | 119 | .480 | 35.6 | 5.9 | 5.40 | 5.78 |
| Steve Cishek | Cin | mr | 35 | .894 | 65 | .385 | 62 | .517 | 68 | .567 | 21.3 | 8.1 | 7.30 | 8.25 |
| Jose Cisnero | LAA | mr | 32 | .600 | 226 | .283 | 132 | .351 | 143 | .380 | 32.1 | 3.2 | 2.91 | 2.70 |
| Aaron Civale | Cle | sp | 26 | .930 | 646 | .412 | 525 | .560 | 534 | .569 | 169.3 | 7.4 | 6.75 | 6.99 |
| Taylor Clarke | Tor | mr | 28 | .758 | 308 | .269 | 251 | .502 | 253 | .506 | 60.7 | 4.6 | 4.09 | 3.88 |
| Alex Claudio* | Cin | mr | 29 | .777 | 63 | .302 | 44 | .478 | 45 | .489 | 11.5 | 4.8 | 4.35 | 5.12 |
| Alex Claudio* | Cle | mr | 29 | .537 | 141 | .206 | 71 | .346 | 71 | .346 | 12.5 | 2.1 | 1.91 | 1.91 |
| Alex Claudio* |   | mr | 29 | .612 | 204 | .235 | 115 | .387 | 116 | .391 | 23.3 | 2.8 | 2.54 | 2.73 |
| Mike Clevinger | Phi | sp | 30 | .687 | 423 | .293 | 293 | .432 | 297 | .438 | 74.3 | 4.2 | 3.79 | 3.58 |
| Tyler Clippard | Oak | mr | 36 | .642 | 197 | .259 | 127 | .401 | 132 | .416 | 31.2 | 3.6 | 3.29 | 2.91 |
| Alex Cobb | Bal | sp | 33 | .732 | 564 | .284 | 336 | .444 | 343 | .454 | 88.0 | 4.5 | 4.07 | 4.39 |
| Kyle Cody | Det | sp | 26 | .546 | 256 | .246 | 142 | .348 | 143 | .350 | 28.8 | 2.6 | 2.36 | 2.52 |
| A.J. Cole | Tor | mr | 29 | .714 | 187 | .289 | 116 | .436 | 118 | .444 | 30.6 | 4.3 | 3.97 | 3.81 |
| Gerrit Cole | Col | sp | 30 | .715 | 425 | .247 | 384 | .483 | 390 | .491 | 88.9 | 4.0 | 3.67 | 3.20 |
| Alex Colome | Min | cl | 32 | .530 | 178 | .230 | 89 | .340 | 89 | .340 | 18.0 | 2.6 | 2.32 | 2.07 |
| Sam Coonrod | SF | mr | 28 | .889 | 174 | .333 | 164 | .554 | 172 | .581 | 50.2 | 7.1 | 6.60 | 6.33 |
| Patrick Corbin* | Atl | sp | 31 | .892 | 595 | .361 | 469 | .555 | 471 | .557 | 144.1 | 6.9 | 6.26 | 6.29 |
| Jimmy Cordero | Phi | mr | 29 | .914 | 132 | .379 | 86 | .524 | 88 | .537 | 28.7 | 7.5 | 6.71 | 7.12 |
| Dylan Covey | Min | mr | 29 | .787 | 150 | .320 | 104 | .471 | 108 | .489 | 28.9 | 5.1 | 4.53 | 5.17 |
| Stefan Crichton | Mil | mr | 29 | .546 | 249 | .241 | 116 | .314 | 129 | .349 | 20.6 | 1.9 | 1.71 | 1.74 |
| Kyle Crick | Bal | mr | 28 | .857 | 7 | .429 | 3 | .429 | 3 | .429 | 1.3 | 8.7 | 7.81 | 9.13 |
| Garrett Crochet* | StL | mr | 22 | .384 | 8 | .125 | 2 | .182 | 3 | .273 | 0.4 | 1.4 | 1.26 | 1.54 |
| Wil Crowe | Tex | sp | 26 | 1.560 | 51 | .490 | 77 | .962 | 77 | .962 | 37.6 | 28.2 | 26.13 | 27.19 |
| Johnny Cueto | Oak | sp | 35 | .677 | 531 | .267 | 352 | .426 | 360 | .436 | 85.6 | 3.9 | 3.55 | 3.53 |
| John Curtiss | Bal | mr | 28 | .666 | 248 | .290 | 151 | .399 | 158 | .418 | 39.2 | 3.9 | 3.51 | 3.40 |
| Yu Darvish | LAA | sp | 34 | .581 | 533 | .311 | 327 | .357 | 330 | .360 | 68.5 | 2.6 | 2.37 | 2.17 |
| Zach Davies | Pit | sp | 28 | .726 | 600 | .293 | 414 | .453 | 422 | .462 | 105.4 | 4.3 | 3.97 | 3.86 |
| Wade Davis | Col | cl | 35 | 1.168 | 45 | .378 | 46 | .754 | 46 | .754 | 18.9 | 14.6 | 13.11 | 13.26 |
| Grant Dayton* | Atl | mr | 33 | .678 | 240 | .221 | 175 | .443 | 180 | .456 | 41.8 | 4.0 | 3.59 | 3.29 |
| Chase De Jong | Col | sp | 27 | 1.064 | 62 | .484 | 67 | .626 | 69 | .645 | 27.0 | 13.0 | 10.76 | 12.40 |
| Jacob deGrom | LAD | sp | 33 | .544 | 444 | .261 | 317 | .359 | 318 | .361 | 61.4 | 2.4 | 2.20 | 1.85 |
| Anthony DeSclafani | Min | sp | 31 | .770 | 179 | .307 | 136 | .481 | 138 | .488 | 36.6 | 5.2 | 4.66 | 4.90 |
| Ross Detwiler* | NYM | mr | 35 | .749 | 171 | .345 | 106 | .442 | 108 | .450 | 29.8 | 4.9 | 4.44 | 4.25 |
| Chris Devenski | KC | mr | 30 | .916 | 22 | .455 | 21 | .568 | 21 | .568 | 7.2 | 9.2 | 7.91 | 7.15 |
| Edwin Diaz | NYY | mr | 27 | .699 | 107 | .308 | 117 | .455 | 121 | .471 | 29.5 | 4.4 | 4.00 | 4.01 |
| Jairo Diaz | LAD | mr | 30 | 1.021 | 76 | .395 | 70 | .625 | 71 | .634 | 24.8 | 10.2 | 9.14 | 9.49 |
| Jake Diekman* | Sea | mr | 34 | .426 | 126 | .214 | 68 | .274 | 71 | .286 | 11.2 | 1.6 | 1.51 | 1.58 |
| Randy Dobnak | Oak | sp | 26 | .672 | 441 | .281 | 229 | .397 | 237 | .411 | 56.5 | 3.6 | 3.28 | 3.25 |
| Rafael Dolis | LAA | mr | 33 | .455 | 160 | .200 | 87 | .291 | 94 | .314 | 13.8 | 1.6 | 1.45 | 1.64 |
| Sean Doolittle* | Cle | mr | 34 | .970 | 159 | .314 | 133 | .607 | 136 | .621 | 45.9 | 9.0 | 8.07 | 7.88 |
| Tommy Doyle | Tor | mr | 25 | .969 | 20 | .450 | 17 | .586 | 17 | .586 | 5.9 | 8.8 | 7.53 | 8.10 |
| Oliver Drake | LAA | mr | 34 | .621 | 106 | .217 | 66 | .410 | 66 | .410 | 13.9 | 3.1 | 2.83 | 2.47 |
| Tyler Duffey | TB | mr | 30 | .541 | 143 | .266 | 95 | .348 | 97 | .355 | 19.5 | 2.6 | 2.35 | 1.97 |
| Danny Duffy* | NYY | sp | 32 | .630 | 509 | .248 | 315 | .394 | 326 | .407 | 73.4 | 3.4 | 3.10 | 2.94 |
| Robert Dugger | KC | mr | 25 | 1.255 | 51 | .471 | 51 | .773 | 52 | .788 | 23.4 | 18.6 | 16.26 | 14.51 |
| Justin Dunn | Hou | sp | 25 | .697 | 409 | .191 | 316 | .467 | 322 | .476 | 73.7 | 4.1 | 3.81 | 3.85 |
| Dane Dunning | NYM | sp | 26 | .571 | 334 | .246 | 194 | .357 | 199 | .366 | 42.3 | 2.9 | 2.60 | 2.54 |
| Carl Edwards | Bal | mr | 29 | .633 | 15 | .267 | 8 | .400 | 8 | .400 | 2.0 | 3.9 | 3.53 | 2.35 |
| Zach Eflin | Mia | sp | 27 | .681 | 399 | .296 | 318 | .439 | 322 | .445 | 73.1 | 3.7 | 3.33 | 3.15 |
| Seth Elledge | Tex | mr | 25 | 1.135 | 105 | .476 | 133 | .700 | 136 | .716 | 50.6 | 13.7 | 12.56 | 11.74 |
| Nathan Eovaldi | ChW | sp | 31 | .838 | 395 | .367 | 307 | .507 | 316 | .522 | 90.8 | 5.8 | 5.33 | 5.55 |
| Robbie Erlin* | NYM | sp | 30 | .944 | 295 | .295 | 272 | .614 | 278 | .628 | 82.7 | 7.4 | 6.65 | 6.01 |
| Thomas Eshelman | Tex | mr | 27 | .904 | 182 | .302 | 147 | .572 | 148 | .576 | 42.7 | 6.8 | 6.10 | 6.73 |
| Carlos Estevez | Phi | mr | 28 | 1.011 | 150 | .400 | 159 | .639 | 163 | .655 | 54.1 | 9.4 | 8.42 | 7.91 |
| Pete Fairbanks | Det | mr | 27 | .619 | 158 | .335 | 117 | .374 | 122 | .390 | 27.2 | 3.4 | 3.10 | 3.89 |
| Jeurys Familia | Was | mr | 31 | .750 | 43 | .256 | 29 | .468 | 30 | .484 | 7.5 | 4.6 | 4.13 | 3.40 |
| Buck Farmer | Min | mr | 30 | .689 | 195 | .297 | 120 | .426 | 122 | .433 | 28.6 | 3.7 | 3.36 | 3.18 |
| Erick Fedde | Sea | sp | 28 | .662 | 408 | .181 | 253 | .427 | 266 | .449 | 58.5 | 3.7 | 3.31 | 3.26 |
| Caleb Ferguson* | Was | mr | 24 | .734 | 112 | .277 | 82 | .477 | 83 | .483 | 17.3 | 3.5 | 3.30 | 3.51 |
| J.P. Feyereisen | LAA | mr | 28 | .710 | 96 | .188 | 73 | .465 | 76 | .484 | 16.1 | 3.7 | 3.34 | 3.61 |
| Mike Fiers | SD | sp | 36 | .819 | 592 | .316 | 395 | .491 | 408 | .507 | 121.2 | 6.1 | 5.52 | 5.70 |
| Kyle Finnegan | Col | mr | 29 | .621 | 249 | .265 | 158 | .384 | 163 | .397 | 36.1 | 3.3 | 3.05 | 3.13 |
| Jack Flaherty | Det | sp | 25 | .657 | 406 | .296 | 284 | .408 | 292 | .420 | 67.2 | 3.7 | 3.32 | 3.39 |
| Josh Fleming* | Mia | sp | 25 | .685 | 297 | .286 | 167 | .415 | 169 | .420 | 38.8 | 3.5 | 3.19 | 3.47 |
| Dylan Floro | Min | mr | 30 | .702 | 234 | .342 | 142 | .420 | 143 | .423 | 37.1 | 4.1 | 3.74 | 3.47 |
| Wilmer Font | Ari | mr | 31 | .985 | 219 | .420 | 208 | .591 | 212 | .602 | 76.5 | 10.4 | 9.15 | 9.49 |
| Matt Foster | Was | mr | 26 | .571 | 161 | .236 | 101 | .378 | 101 | .378 | 20.6 | 2.8 | 2.49 | 1.92 |
| Kyle Freeland* | ChW | sp | 28 | .695 | 672 | .283 | 390 | .421 | 400 | .431 | 95.0 | 3.8 | 3.52 | 3.80 |
| Sam Freeman* | Sea | mr | 34 | .608 | 34 | .235 | 19 | .380 | 19 | .380 | 4.5 | 3.5 | 3.05 | 3.01 |
| Max Fried* | Oak | sp | 27 | .611 | 502 | .261 | 306 | .381 | 319 | .397 | 69.2 | 3.2 | 2.88 | 2.45 |
| Jace Fry* | Cle | mr | 27 | .862 | 155 | .265 | 166 | .587 | 166 | .587 | 41.3 | 5.5 | 4.99 | 5.08 |
| Paul Fry* | Oak | mr | 28 | .252 | 41 | .122 | 13 | .167 | 14 | .179 | 1.1 | 0.5 | 0.41 | 0.50 |
| Carson Fulmer | SD | mr | 27 | .705 | 35 | .286 | 21 | .404 | 23 | .442 | 6.4 | 4.9 | 4.33 | 3.88 |
| Michael Fulmer | Tex | sp | 28 | 1.120 | 391 | .432 | 359 | .666 | 368 | .683 | 139.4 | 11.8 | 10.68 | 12.38 |
| Giovanny Gallegos | Hou | mr | 29 | .545 | 107 | .196 | 81 | .377 | 81 | .377 | 13.8 | 2.2 | 2.00 | 1.91 |
| Zac Gallen | Ari | sp | 25 | .699 | 541 | .309 | 415 | .435 | 424 | .444 | 100.6 | 4.0 | 3.60 | 4.18 |
| John Gant | ChC | mr | 28 | .535 | 176 | .261 | 111 | .345 | 112 | .348 | 22.0 | 2.5 | 2.31 | 2.47 |
| Bryan Garcia | Atl | mr | 26 | .541 | 39 | .256 | 16 | .320 | 16 | .320 | 3.4 | 2.5 | 2.29 | 2.26 |
| Deivi Garcia | Mia | sp | 22 | .483 | 74 | .203 | 31 | .304 | 31 | .304 | 5.4 | 1.7 | 1.56 | 1.26 |
| Edgar Garcia | Phi | mr | 24 | .111 | 7 | .000 | 1 | .111 | 1 | .111 | 0.0 | 0.1 | 0.09 | 0.16 |
| Jarlin Garcia* | LAA | mr | 28 | .526 | 188 | .245 | 87 | .309 | 91 | .323 | 18.2 | 2.3 | 2.11 | 2.16 |
| Luis Garcia | KC | mr | 34 | 1.238 | 122 | .484 | 163 | .769 | 163 | .769 | 68.9 | 17.4 | 15.65 | 15.48 |
| Luis Garcia | Pit | mr | 24 | .799 | 103 | .252 | 68 | .500 | 71 | .522 | 19.6 | 5.8 | 5.54 | 4.40 |
| Rico Garcia | LAD | mr | 27 | 1.084 | 47 | .426 | 40 | .656 | 40 | .656 | 15.1 | 11.3 | 9.91 | 11.44 |
| Rony Garcia | Col | mr | 23 | 1.072 | 223 | .323 | 219 | .704 | 219 | .704 | 77.0 | 10.7 | 9.74 | 9.49 |
| Yimi Garcia | KC | mr | 30 | .704 | 89 | .382 | 77 | .440 | 78 | .446 | 20.2 | 4.6 | 4.14 | 3.67 |
| Amir Garrett* | Phi | mr | 29 | .571 | 114 | .175 | 84 | .384 | 88 | .402 | 14.4 | 2.2 | 2.00 | 1.75 |
| Braxton Garrett* | TB | sp | 23 | 1.224 | 50 | .360 | 81 | .779 | 82 | .788 | 29.2 | 14.3 | 13.15 | 15.67 |
| Kevin Gausman | SD | sp | 30 | .678 | 412 | .294 | 332 | .440 | 335 | .444 | 79.9 | 3.9 | 3.55 | 3.21 |
| Sam Gaviglio | Col | mr | 31 | 1.215 | 34 | .353 | 47 | .770 | 47 | .770 | 18.0 | 15.2 | 13.27 | 14.93 |
| Joey Gerber | Phi | mr | 24 | .830 | 217 | .267 | 142 | .511 | 148 | .532 | 37.0 | 5.0 | 4.57 | 4.62 |
| Ian Gibaut | Hou | mr | 27 | .795 | 74 | .270 | 71 | .522 | 73 | .537 | 19.1 | 5.7 | 5.16 | 5.05 |
| Kyle Gibson | Oak | sp | 33 | .772 | 46 | .348 | 34 | .479 | 34 | .479 | 9.5 | 5.1 | 4.61 | 4.83 |
| Kevin Ginkel | Mil | mr | 27 | .667 | 5 | .200 | 6 | .462 | 6 | .462 | 1.0 | 3.4 | 3.08 | 3.80 |
| Lucas Giolito | SD | sp | 26 | .632 | 442 | .278 | 340 | .409 | 348 | .418 | 72.4 | 3.1 | 2.83 | 2.67 |
| Mychal Givens | SD | mr | 31 | 1.010 | 93 | .269 | 105 | .665 | 105 | .665 | 31.4 | 8.5 | 7.71 | 8.79 |
| Tyler Glasnow | Sea | sp | 27 | .633 | 382 | .283 | 316 | .416 | 318 | .418 | 73.1 | 3.5 | 3.17 | 2.80 |
| Zack Godley | Col | sp | 31 | 1.154 | 253 | .431 | 309 | .724 | 315 | .738 | 120.4 | 13.5 | 12.04 | 12.41 |
| Austin Gomber* | LAA | mr | 27 | .556 | 320 | .253 | 173 | .343 | 178 | .353 | 34.1 | 2.5 | 2.27 | 2.68 |
| Tony Gonsolin | Mil | sp | 27 | .499 | 385 | .244 | 183 | .302 | 190 | .314 | 35.5 | 2.0 | 1.86 | 1.60 |
| Marco Gonzales* | Was | sp | 29 | .654 | 669 | .266 | 370 | .397 | 385 | .413 | 89.5 | 3.5 | 3.13 | 2.72 |
| Chi Chi Gonzalez | SF | sp | 29 | .826 | 223 | .363 | 173 | .499 | 178 | .513 | 48.4 | 5.6 | 4.94 | 5.34 |
| Gio Gonzalez* | NYM | mr | 35 | .972 | 300 | .373 | 283 | .598 | 290 | .613 | 101.5 | 9.7 | 8.87 | 9.19 |
| Victor Gonzalez* | LAD | mr | 25 | .434 | 151 | .238 | 51 | .218 | 61 | .261 | 10.9 | 1.6 | 1.45 | 1.29 |
| Nick Goody | Cin | mr | 29 | 1.370 | 14 | .500 | 22 | .880 | 22 | .880 | 9.5 | 21.4 | 19.27 | 16.03 |
| Trevor Gott | Tor | cl | 28 | 1.537 | 11 | .455 | 17 | 1.000 | 17 | 1.000 | 6.9 | 18.7 | 16.79 | 16.29 |
| Ashton Goudeau | Hou | mr | 28 | .250 | 5 | .200 | 1 | .125 | 1 | .125 | 0.1 | 0.5 | 0.43 | 0.40 |
| Brusdar Graterol | Col | mr | 22 | .642 | 281 | .292 | 129 | .351 | 141 | .383 | 26.9 | 2.6 | 2.32 | 2.97 |
| Kendall Graveman | Mia | mr | 30 | .753 | 58 | .224 | 44 | .506 | 44 | .506 | 10.4 | 4.5 | 4.09 | 3.84 |
| Jon Gray | Hou | sp | 29 | .837 | 460 | .320 | 318 | .514 | 325 | .525 | 97.2 | 6.4 | 5.79 | 5.72 |
| Sonny Gray | Ari | sp | 31 | .638 | 422 | .294 | 338 | .407 | 348 | .419 | 77.9 | 3.6 | 3.21 | 3.25 |
| Chad Green | Oak | mr | 30 | .557 | 171 | .234 | 103 | .354 | 105 | .361 | 21.8 | 2.6 | 2.37 | 2.04 |
| Shane Greene | Was | mr | 32 | .573 | 122 | .254 | 61 | .343 | 63 | .354 | 13.1 | 2.7 | 2.43 | 2.50 |
| Zack Greinke | ChC | sp | 37 | .781 | 686 | .375 | 454 | .466 | 459 | .471 | 134.8 | 5.4 | 4.88 | 4.51 |
| Foster Griffin* | ChW | mr | 25 | .731 | 38 | .342 | 21 | .429 | 21 | .429 | 5.8 | 4.8 | 4.16 | 4.49 |
| Robert Gsellman | Was | sp | 27 | 1.016 | 157 | .389 | 146 | .621 | 149 | .634 | 50.3 | 9.5 | 8.66 | 8.50 |
| Junior Guerra | Hou | mr | 36 | .644 | 236 | .263 | 158 | .413 | 161 | .420 | 34.2 | 3.3 | 2.97 | 3.03 |
| Taylor Guilbeau* | Cin | mr | 28 | .822 | 57 | .333 | 37 | .481 | 38 | .494 | 11.9 | 6.7 | 6.43 | 7.11 |
| Josh Hader* | SD | cl | 27 | .538 | 161 | .143 | 134 | .373 | 141 | .393 | 24.7 | 2.5 | 2.25 | 2.25 |
| Jesse Hahn | Bal | mr | 31 | .363 | 192 | .146 | 74 | .228 | 82 | .252 | 11.1 | 1.2 | 1.08 | 1.14 |
| David Hale | Mia | mr | 33 | .533 | 45 | .156 | 22 | .344 | 23 | .359 | 4.5 | 2.5 | 2.34 | 1.83 |
| Cole Hamels* | Hou | sp | 37 | .781 | 67 | .299 | 39 | .481 | 39 | .481 | 10.5 | 5.0 | 4.46 | 4.53 |
| Brad Hand* | Hou | cl | 31 | .554 | 162 | .272 | 83 | .317 | 93 | .355 | 19.1 | 2.6 | 2.38 | 1.85 |
| J.A. Happ* | ChC | sp | 38 | .642 | 486 | .208 | 297 | .422 | 301 | .428 | 61.0 | 3.1 | 2.77 | 2.56 |
| Ryne Harper | KC | mr | 32 | .610 | 83 | .277 | 44 | .355 | 47 | .379 | 10.5 | 3.0 | 2.74 | 2.09 |
| Will Harris | Det | mr | 36 | .136 | 16 | .063 | 3 | .100 | 3 | .100 | 0.1 | 0.1 | 0.09 | 0.16 |
| Geoff Hartlieb | LAA | mr | 27 | .684 | 182 | .280 | 133 | .424 | 140 | .446 | 31.4 | 4.2 | 3.76 | 4.95 |
| Hunter Harvey | NYM | mr | 26 | .707 | 139 | .273 | 89 | .430 | 92 | .444 | 22.3 | 4.1 | 3.77 | 4.57 |
| Matt Harvey | StL | sp | 32 | 1.319 | 159 | .447 | 202 | .835 | 204 | .843 | 83.7 | 16.9 | 15.06 | 16.89 |
| Thomas Hatch | NYM | mr | 26 | .561 | 276 | .207 | 161 | .355 | 169 | .372 | 33.5 | 2.7 | 2.45 | 2.70 |
| Andrew Heaney* | StL | sp | 30 | .747 | 564 | .309 | 417 | .469 | 426 | .479 | 109.1 | 4.7 | 4.22 | 4.08 |
| Taylor Hearn* | Tex | mr | 26 | .642 | 165 | .285 | 121 | .392 | 129 | .417 | 29.5 | 3.7 | 3.26 | 3.59 |
| Ben Heller | Hou | mr | 29 | .926 | 197 | .294 | 150 | .507 | 175 | .591 | 55.5 | 8.4 | 7.58 | 7.88 |
| Ryan Helsley | Pit | mr | 26 | .662 | 88 | .114 | 66 | .458 | 69 | .479 | 13.5 | 3.4 | 3.02 | 2.83 |
| Heath Hembree | Cle | mr | 32 | 1.359 | 167 | .401 | 251 | .900 | 253 | .907 | 102.3 | 17.6 | 15.74 | 15.58 |
| Kyle Hendricks | Was | sp | 31 | .621 | 678 | .291 | 351 | .371 | 355 | .376 | 81.9 | 3.1 | 2.80 | 2.62 |
| Liam Hendriks | Bal | cl | 32 | .397 | 195 | .251 | 86 | .234 | 89 | .243 | 13.5 | 1.2 | 1.09 | 0.96 |
| Jimmy Herget | Bal | mr | 27 | .636 | 158 | .234 | 107 | .404 | 112 | .423 | 25.2 | 3.7 | 3.31 | 3.48 |
| Carlos Hernandez | SF | sp | 24 | 1.001 | 138 | .420 | 144 | .615 | 146 | .624 | 50.5 | 9.7 | 8.64 | 9.88 |
| Darwinzon Hernandez* | Atl | mr | 24 | .944 | 77 | .364 | 79 | .568 | 84 | .604 | 25.5 | 7.9 | 7.05 | 8.37 |
| Elieser Hernandez | Phi | sp | 26 | .606 | 281 | .238 | 192 | .395 | 198 | .407 | 41.7 | 3.0 | 2.77 | 2.19 |
| Jonathan Hernandez | Tex | mr | 24 | .525 | 295 | .254 | 143 | .311 | 152 | .330 | 26.6 | 1.9 | 1.78 | 1.54 |
| Codi Heuer | Was | mr | 24 | .399 | 153 | .209 | 62 | .247 | 63 | .251 | 10.3 | 1.4 | 1.25 | 1.15 |
| Cam Hill | KC | mr | 27 | .686 | 140 | .200 | 95 | .430 | 102 | .462 | 23.1 | 3.8 | 3.42 | 3.34 |
| Rich Hill* | Hou | sp | 41 | .706 | 431 | .267 | 273 | .444 | 274 | .446 | 71.2 | 4.5 | 4.10 | 4.18 |
| Tim Hill* | LAD | mr | 31 | .474 | 103 | .233 | 49 | .283 | 52 | .301 | 8.2 | 1.6 | 1.40 | 1.31 |
| Jeff Hoffman | TB | mr | 28 | 1.131 | 179 | .453 | 182 | .695 | 186 | .710 | 70.1 | 12.3 | 11.06 | 10.23 |
| Derek Holland* | Phi | mr | 34 | .906 | 202 | .257 | 185 | .605 | 189 | .618 | 49.4 | 6.1 | 5.59 | 5.55 |
| Greg Holland | Bal | mr | 35 | .586 | 248 | .258 | 150 | .364 | 158 | .383 | 30.8 | 2.6 | 2.36 | 2.02 |
| Clay Holmes | Hou | mr | 28 | .250 | 2 | .000 | 1 | .250 | 1 | .250 | 0.1 | 0.6 | 0.53 | 0.94 |
| Tanner Houck | Cle | sp | 25 | .798 | 98 | .296 | 108 | .519 | 111 | .534 | 28.5 | 5.8 | 5.24 | 6.25 |
| Adrian Houser | LAD | sp | 28 | .946 | 384 | .391 | 338 | .572 | 349 | .591 | 113.4 | 8.4 | 7.66 | 7.71 |
| Sam Howard* | KC | mr | 28 | .764 | 123 | .293 | 120 | .480 | 129 | .516 | 31.9 | 4.9 | 4.48 | 4.30 |
| Spencer Howard | NYM | sp | 24 | .904 | 258 | .318 | 251 | .576 | 257 | .589 | 77.7 | 7.5 | 6.87 | 6.99 |
| James Hoyt | ChW | mr | 34 | .522 | 154 | .227 | 95 | .344 | 96 | .348 | 18.4 | 2.4 | 2.15 | 1.71 |
| Dakota Hudson | Bos | sp | 26 | .704 | 370 | .284 | 247 | .435 | 254 | .447 | 55.8 | 3.6 | 3.23 | 3.65 |
| Daniel Hudson | SF | cl | 34 | .521 | 73 | .137 | 45 | .349 | 48 | .372 | 8.4 | 2.4 | 2.12 | 2.05 |
| Jared Hughes | Ari | mr | 35 | .755 | 297 | .290 | 207 | .456 | 220 | .485 | 55.0 | 4.8 | 4.32 | 4.64 |
| Tommy Hunter | Bal | mr | 34 | .658 | 138 | .275 | 91 | .408 | 95 | .426 | 21.7 | 3.7 | 3.29 | 3.13 |
| Raisel Iglesias | Was | cl | 31 | .453 | 102 | .284 | 48 | .268 | 49 | .274 | 9.0 | 1.7 | 1.53 | 1.27 |
| Luke Jackson | Pit | mr | 29 | .919 | 270 | .404 | 205 | .544 | 207 | .549 | 70.9 | 8.3 | 7.58 | 8.30 |
| Josh James | SD | mr | 28 | 1.088 | 43 | .302 | 59 | .711 | 60 | .723 | 19.9 | 11.0 | 10.53 | 10.54 |
| Kenley Jansen | NYY | cl | 33 | .766 | 103 | .388 | 86 | .478 | 86 | .478 | 25.5 | 5.9 | 5.35 | 5.13 |
| Cristian Javier | Bos | sp | 24 | .675 | 385 | .187 | 305 | .458 | 311 | .467 | 66.7 | 3.7 | 3.34 | 3.24 |
| Jeremy Jeffress | Mil | cl | 33 | .419 | 176 | .193 | 73 | .257 | 77 | .271 | 10.6 | 1.3 | 1.13 | 1.38 |
| Joe Jimenez | StL | mr | 26 | .973 | 183 | .290 | 197 | .592 | 218 | .655 | 64.5 | 7.9 | 7.12 | 7.49 |
| Pierce Johnson | KC | mr | 30 | .537 | 124 | .282 | 86 | .350 | 87 | .354 | 17.1 | 2.6 | 2.30 | 2.14 |
| Nate Jones | NYM | mr | 35 | .843 | 135 | .393 | 113 | .507 | 117 | .525 | 36.4 | 6.8 | 6.14 | 6.10 |
| Jakob Junis | SF | sp | 28 | .944 | 327 | .321 | 283 | .585 | 294 | .607 | 93.9 | 8.2 | 7.48 | 7.64 |
| Rob Kaminsky* | Bos | mr | 26 | .708 | 30 | .167 | 19 | .452 | 20 | .476 | 4.6 | 4.3 | 3.99 | 3.64 |
| James Kaprielian | Ari | mr | 27 | 1.610 | 21 | .476 | 29 | 1.036 | 29 | 1.036 | 15.7 | 35.4 | 34.74 | 36.65 |
| James Karinchak | SD | mr | 25 | .584 | 155 | .400 | 147 | .370 | 150 | .378 | 32.3 | 3.2 | 2.85 | 2.99 |
| Anthony Kay* | Det | mr | 26 | .728 | 69 | .319 | 59 | .468 | 60 | .476 | 15.4 | 4.8 | 4.24 | 3.98 |
| Brad Keller | Cle | sp | 25 | .554 | 371 | .267 | 165 | .324 | 168 | .330 | 35.2 | 2.5 | 2.23 | 2.36 |
| Brad Keller | Sea | sp | 25 | .432 | 180 | .206 | 60 | .244 | 64 | .260 | 10.0 | 1.4 | 1.27 | 1.31 |
| Brad Keller |   | sp | 25 | .515 | 551 | .247 | 225 | .298 | 232 | .307 | 44.6 | 2.1 | 1.88 | 1.94 |
| Mitch Keller | ChW | sp | 25 | .566 | 187 | .144 | 141 | .397 | 146 | .411 | 26.4 | 2.8 | 2.59 | 2.97 |
| Joe Kelly | ChC | mr | 33 | .894 | 92 | .370 | 78 | .545 | 79 | .552 | 24.3 | 8.3 | 7.68 | 9.09 |
| Merrill Kelly | Was | sp | 32 | .684 | 305 | .289 | 202 | .433 | 205 | .439 | 46.7 | 3.6 | 3.20 | 2.92 |
| Ian Kennedy | Min | mr | 36 | 1.076 | 56 | .375 | 62 | .697 | 63 | .708 | 21.8 | 10.3 | 9.28 | 9.89 |
| Clayton Kershaw* | Mil | sp | 33 | .600 | 462 | .240 | 285 | .388 | 291 | .396 | 57.7 | 2.7 | 2.44 | 2.00 |
| Dallas Keuchel* | ChC | sp | 33 | .663 | 704 | .287 | 363 | .393 | 369 | .400 | 93.2 | 3.8 | 3.50 | 3.47 |
| Mike Kickham* | Hou | mr | 32 | .866 | 17 | .235 | 21 | .583 | 22 | .611 | 5.7 | 5.9 | 5.54 | 5.39 |
| Yusei Kikuchi* | Cin | sp | 30 | .803 | 354 | .319 | 259 | .494 | 266 | .508 | 68.6 | 5.1 | 4.57 | 5.01 |
| Franklyn Kilome | SD | mr | 26 | 1.067 | 27 | .222 | 51 | .750 | 52 | .765 | 15.3 | 9.2 | 8.47 | 7.79 |
| Kwang Hyun Kim* | Bos | sp | 32 | .656 | 452 | .259 | 251 | .409 | 255 | .416 | 51.9 | 3.0 | 2.69 | 2.80 |
| Craig Kimbrel | NYM | mr | 33 | .658 | 88 | .284 | 110 | .438 | 115 | .458 | 24.4 | 3.8 | 3.43 | 3.55 |
| John King* | NYM | mr | 26 | .823 | 84 | .321 | 59 | .476 | 64 | .516 | 19.5 | 6.8 | 5.92 | 6.05 |
| Michael King | ChC | mr | 26 | .921 | 226 | .341 | 207 | .570 | 214 | .590 | 67.3 | 7.9 | 7.01 | 7.35 |
| Tyler Kinley | Col | mr | 30 | .555 | 174 | .218 | 120 | .359 | 127 | .380 | 24.0 | 2.7 | 2.47 | 2.55 |
| Brandon Kintzler | Tor | cl | 36 | .696 | 329 | .231 | 200 | .452 | 201 | .455 | 35.9 | 2.8 | 2.54 | 3.11 |
| Andrew Kittredge | Det | mr | 31 | .769 | 107 | .299 | 69 | .483 | 69 | .483 | 17.7 | 4.8 | 4.35 | 4.46 |
| Branden Kline | Cin | mr | 29 | 1.122 | 37 | .378 | 33 | .647 | 35 | .686 | 13.1 | 12.2 | 10.60 | 12.25 |
| Corey Kluber | Mia | sp | 35 | .655 | 28 | .286 | 20 | .426 | 20 | .426 | 4.6 | 3.6 | 2.93 | 2.56 |
| Adam Kolarek* | Bos | mr | 32 | .453 | 195 | .231 | 68 | .257 | 69 | .260 | 13.0 | 1.7 | 1.51 | 1.41 |
| Dean Kremer | Min | sp | 25 | .742 | 184 | .321 | 152 | .478 | 154 | .484 | 39.5 | 5.0 | 4.51 | 3.75 |
| Chad Kuhl | Oak | sp | 28 | .761 | 321 | .265 | 262 | .496 | 262 | .496 | 68.0 | 5.2 | 4.70 | 5.01 |
| Brady Lail | Cin | mr | 27 | .694 | 111 | .144 | 80 | .471 | 84 | .494 | 16.9 | 3.5 | 3.15 | 2.88 |
| Travis Lakins | Tex | mr | 27 | .764 | 172 | .279 | 138 | .489 | 140 | .496 | 37.6 | 5.5 | 4.97 | 5.01 |
| Jimmy Lambert | TB | mr | 26 | 1.087 | 41 | .415 | 37 | .661 | 37 | .661 | 13.4 | 11.7 | 10.89 | 12.11 |
| Dinelson Lamet | KC | sp | 28 | .531 | 383 | .264 | 251 | .337 | 260 | .349 | 49.9 | 2.3 | 2.11 | 1.65 |
| Wade LeBlanc* | Atl | sp | 36 | .790 | 132 | .258 | 88 | .497 | 90 | .508 | 24.4 | 5.4 | 4.89 | 4.91 |
| Jose Leclerc | Pit | cl | 27 | 1.608 | 15 | .600 | 20 | .952 | 20 | .952 | 11.5 | 38.9 | 39.97 | 40.20 |
| Brandon Leibrandt* | Min | mr | 28 | .656 | 115 | .200 | 68 | .433 | 68 | .433 | 14.6 | 3.7 | 3.34 | 4.17 |
| Jon Lester* | Det | sp | 37 | .683 | 571 | .256 | 345 | .424 | 354 | .435 | 87.9 | 4.1 | 3.71 | 3.62 |
| Josh Lindblom | KC | sp | 34 | .780 | 369 | .331 | 296 | .482 | 305 | .497 | 85.8 | 5.7 | 5.11 | 4.89 |
| Jonathan Loaisiga | Tor | mr | 26 | .541 | 56 | .250 | 28 | .304 | 32 | .348 | 5.7 | 2.1 | 1.92 | 1.78 |
| Walker Lockett | Cle | mr | 27 | .992 | 163 | .429 | 142 | .580 | 148 | .604 | 53.3 | 9.9 | 9.00 | 10.00 |
| Jorge Lopez | Bal | sp | 28 | .724 | 214 | .271 | 124 | .428 | 130 | .448 | 31.9 | 4.1 | 3.80 | 4.17 |
| Pablo Lopez | LAD | sp | 25 | .647 | 568 | .261 | 367 | .402 | 383 | .420 | 86.5 | 3.5 | 3.23 | 3.10 |
| Reynaldo Lopez | TB | sp | 27 | 1.247 | 244 | .443 | 327 | .786 | 332 | .798 | 135.4 | 16.1 | 14.82 | 15.05 |
| Yoan Lopez | Ari | mr | 28 | 1.166 | 230 | .383 | 256 | .751 | 257 | .754 | 89.6 | 11.6 | 11.00 | 11.34 |
| Michael Lorenzen | Tor | mr | 29 | .857 | 234 | .368 | 211 | .537 | 214 | .545 | 65.7 | 7.0 | 6.36 | 6.19 |
| Aaron Loup* | Det | mr | 33 | .614 | 207 | .222 | 120 | .390 | 125 | .406 | 25.0 | 2.8 | 2.64 | 2.24 |
| Joey Lucchesi* | Phi | sp | 28 | 1.164 | 94 | .468 | 87 | .669 | 92 | .708 | 37.9 | 14.4 | 12.96 | 12.90 |
| Seth Lugo | Cin | cl | 31 | .880 | 207 | .425 | 187 | .542 | 188 | .545 | 56.8 | 6.6 | 5.98 | 6.47 |
| Jesus Luzardo* | NYM | sp | 23 | .795 | 490 | .310 | 367 | .495 | 378 | .509 | 100.6 | 5.2 | 4.73 | 4.71 |
| Jordan Lyles | Cin | sp | 30 | .840 | 465 | .267 | 351 | .530 | 360 | .544 | 101.4 | 6.1 | 5.57 | 5.69 |
| Lance Lynn | NYY | sp | 34 | .736 | 642 | .282 | 460 | .460 | 478 | .478 | 121.6 | 4.6 | 4.16 | 3.88 |
| Kenta Maeda | Ari | sp | 33 | .629 | 480 | .250 | 364 | .416 | 368 | .420 | 79.0 | 3.2 | 2.90 | 2.51 |
| Matt Magill | Hou | mr | 31 | 1.122 | 75 | .347 | 93 | .710 | 94 | .718 | 35.3 | 13.1 | 12.27 | 12.58 |
| Tyler Mahle | Min | sp | 26 | .801 | 315 | .308 | 314 | .523 | 321 | .535 | 83.5 | 5.4 | 4.85 | 4.57 |
| Sean Manaea* | Phi | sp | 29 | .711 | 647 | .298 | 390 | .433 | 397 | .441 | 97.0 | 3.9 | 3.57 | 3.51 |
| Nick Margevicius* | Sea | sp | 25 | .902 | 256 | .352 | 214 | .572 | 215 | .575 | 66.5 | 7.3 | 6.65 | 6.29 |
| Brailyn Marquez* | Ari | mr | 22 | 1.219 | 22 | .364 | 29 | .763 | 29 | .763 | 11.2 | 18.9 | 15.15 | 16.61 |
| German Marquez | Det | sp | 26 | .648 | 721 | .304 | 391 | .385 | 397 | .391 | 93.8 | 3.4 | 3.14 | 3.16 |
| Evan Marshall | LAD | mr | 31 | .705 | 178 | .365 | 134 | .428 | 136 | .435 | 37.1 | 4.8 | 4.24 | 4.25 |
| Brett Martin* | Atl | mr | 26 | .649 | 142 | .239 | 89 | .416 | 91 | .425 | 20.6 | 3.7 | 3.31 | 3.36 |
| Chris Martin | Bos | mr | 35 | .384 | 102 | .157 | 33 | .228 | 36 | .248 | 5.0 | 1.1 | 0.98 | 0.76 |
| Chris Martin | Cle | mr | 35 | .471 | 69 | .203 | 35 | .302 | 36 | .310 | 5.9 | 1.7 | 1.51 | 1.25 |
| Chris Martin |   | mr | 35 | .422 | 171 | .175 | 68 | .261 | 72 | .276 | 10.8 | 1.3 | 1.20 | 0.96 |
| Carlos Martinez | Det | sp | 29 | .536 | 6 | .333 | 2 | .250 | 2 | .250 | 0.6 | 2.8 | 2.55 | 1.95 |
| Phil Maton | LAD | mr | 28 | .819 | 160 | .500 | 122 | .455 | 129 | .481 | 41.5 | 6.5 | 5.82 | 5.71 |
| Tyler Matzek* | Hou | mr | 30 | .520 | 182 | .335 | 101 | .301 | 104 | .310 | 22.5 | 2.5 | 2.26 | 2.18 |
| Dustin May | NYY | sp | 23 | .740 | 450 | .247 | 326 | .476 | 332 | .485 | 79.5 | 4.3 | 3.94 | 4.14 |
| Trevor May | ChC | mr | 31 | .779 | 181 | .431 | 173 | .470 | 178 | .484 | 50.3 | 5.4 | 4.83 | 5.33 |
| Mike Mayers | Atl | mr | 29 | .469 | 219 | .192 | 121 | .300 | 128 | .318 | 20.3 | 1.7 | 1.57 | 1.47 |
| Chris Mazza | Atl | sp | 31 | .906 | 142 | .380 | 119 | .529 | 124 | .551 | 41.9 | 8.3 | 7.37 | 7.90 |
| Lance McCullers | Pit | sp | 27 | .819 | 477 | .325 | 403 | .508 | 424 | .535 | 112.9 | 5.7 | 5.11 | 4.81 |
| Jake McGee* | KC | mr | 34 | .576 | 114 | .316 | 76 | .365 | 76 | .365 | 16.5 | 2.9 | 2.63 | 2.16 |
| Kyle McGowin | Cle | mr | 29 | .835 | 98 | .388 | 86 | .518 | 87 | .524 | 23.5 | 5.6 | 5.06 | 5.72 |
| Triston McKenzie | Tex | sp | 23 | .693 | 179 | .279 | 153 | .455 | 154 | .458 | 37.2 | 4.1 | 3.77 | 3.46 |
| John Means* | Col | sp | 28 | .843 | 340 | .244 | 303 | .554 | 313 | .572 | 77.4 | 5.2 | 4.79 | 5.02 |
| Nick Mears | LAA | mr | 24 | .996 | 17 | .412 | 20 | .645 | 20 | .645 | 6.8 | 10.3 | 9.77 | 8.88 |
| Adonis Medina | Bos | sp | 24 | .726 | 40 | .250 | 28 | .475 | 28 | .475 | 6.1 | 3.8 | 3.46 | 3.82 |
| Humberto Mejia | Col | sp | 24 | 1.346 | 100 | .360 | 150 | .872 | 153 | .890 | 62.6 | 18.2 | 16.01 | 15.27 |
| Mark Melancon | Bos | cl | 36 | .551 | 212 | .274 | 83 | .297 | 88 | .315 | 20.6 | 2.7 | 2.50 | 2.64 |
| Keury Mella | TB | mr | 27 | .884 | 128 | .422 | 91 | .511 | 91 | .511 | 31.3 | 7.7 | 7.12 | 7.07 |
| Conner Menez* | StL | mr | 26 | .693 | 30 | .167 | 21 | .447 | 22 | .468 | 4.6 | 3.5 | 3.17 | 3.26 |
| Daniel Mengden | NYM | mr | 28 | .919 | 529 | .331 | 450 | .570 | 460 | .583 | 147.2 | 8.1 | 7.39 | 7.47 |
| Julian Merryweather | Bos | mr | 29 | .661 | 126 | .302 | 76 | .402 | 77 | .407 | 19.2 | 3.9 | 3.56 | 3.51 |
| Keynan Middleton | Atl | mr | 27 | .985 | 40 | .475 | 39 | .582 | 40 | .597 | 15.0 | 10.6 | 9.33 | 9.28 |
| Wade Miley* | Tor | sp | 34 | .802 | 194 | .325 | 143 | .483 | 150 | .507 | 41.3 | 5.8 | 5.20 | 5.27 |
| Andrew Miller* | Mil | mr | 36 | .600 | 119 | .235 | 73 | .341 | 86 | .402 | 18.6 | 3.3 | 3.01 | 2.90 |
| Tyson Miller | TB | sp | 25 | .804 | 50 | .260 | 37 | .514 | 38 | .528 | 11.0 | 6.4 | 6.20 | 5.74 |
| Alec Mills | Bal | sp | 29 | .764 | 516 | .250 | 382 | .492 | 391 | .504 | 97.0 | 4.7 | 4.36 | 4.29 |
| Hoby Milner* | KC | mr | 30 | .736 | 153 | .209 | 115 | .479 | 118 | .492 | 28.1 | 4.4 | 3.97 | 3.96 |
| Tommy Milone* | Atl | sp | 34 | .852 | 400 | .338 | 296 | .517 | 307 | .537 | 89.4 | 6.2 | 5.57 | 5.53 |
| Mike Minor* | Sea | sp | 33 | .722 | 468 | .265 | 366 | .466 | 371 | .473 | 91.2 | 4.4 | 4.05 | 4.14 |
| A.J. Minter* | NYY | mr | 27 | .486 | 158 | .234 | 80 | .308 | 80 | .308 | 13.6 | 1.8 | 1.59 | 1.50 |
| Anthony Misiewicz* | ChW | mr | 26 | .683 | 111 | .378 | 75 | .403 | 77 | .414 | 21.2 | 4.6 | 4.23 | 3.83 |
| Casey Mize | Pit | sp | 24 | .705 | 267 | .258 | 172 | .413 | 190 | .457 | 47.4 | 4.5 | 4.13 | 4.48 |
| Frankie Montas | ChC | sp | 28 | .883 | 430 | .370 | 414 | .552 | 421 | .561 | 128.9 | 7.3 | 6.66 | 6.89 |
| Rafael Montero | Mia | cl | 30 | .595 | 135 | .200 | 91 | .396 | 93 | .404 | 18.1 | 2.8 | 2.61 | 2.45 |
| Jordan Montgomery* | Pit | sp | 28 | .706 | 416 | .329 | 250 | .419 | 259 | .434 | 67.9 | 4.3 | 3.91 | 3.49 |
| Mike Montgomery* | ChW | mr | 31 | .720 | 36 | .222 | 24 | .471 | 24 | .471 | 5.7 | 4.3 | 3.84 | 4.43 |
| Adrian Morejon* | SD | mr | 22 | .771 | 56 | .304 | 50 | .500 | 50 | .500 | 11.6 | 4.3 | 3.87 | 4.75 |
| Adam Morgan* | LAA | mr | 31 | .729 | 102 | .275 | 77 | .467 | 79 | .479 | 17.3 | 3.8 | 3.53 | 3.64 |
| Mike Morin | Det | mr | 30 | 1.282 | 26 | .462 | 25 | .758 | 26 | .788 | 11.5 | 18.3 | 16.48 | 17.61 |
| Charlie Morton | Mil | sp | 37 | .762 | 374 | .340 | 268 | .457 | 279 | .476 | 77.7 | 5.3 | 4.85 | 4.84 |
| Patrick Murphy | Atl | mr | 26 | 1.028 | 8 | .500 | 7 | .583 | 7 | .583 | 2.6 | 14.2 | 12.81 | 17.04 |
| Joe Musgrove | Min | sp | 28 | .842 | 285 | .396 | 289 | .532 | 292 | .538 | 88.5 | 6.8 | 6.11 | 5.90 |
| Nick Nelson | Bal | mr | 25 | .779 | 136 | .287 | 106 | .505 | 106 | .505 | 28.5 | 5.3 | 4.82 | 4.86 |
| Hector Neris | LAA | mr | 32 | .668 | 238 | .387 | 135 | .377 | 135 | .377 | 38.5 | 4.4 | 3.93 | 4.20 |
| Dovydas Neverauskas | Tor | mr | 28 | 1.023 | 90 | .422 | 93 | .628 | 93 | .628 | 33.5 | 10.8 | 9.70 | 10.08 |
| Jake Newberry | Mia | mr | 26 | .634 | 56 | .232 | 44 | .423 | 44 | .423 | 7.0 | 2.2 | 2.02 | 2.89 |
| Sean Newcomb* | Tor | sp | 28 | 1.037 | 400 | .373 | 367 | .626 | 383 | .654 | 136.4 | 10.6 | 9.61 | 10.29 |
| Ljay Newsome | StL | sp | 24 | 1.172 | 233 | .361 | 235 | .748 | 242 | .771 | 91.0 | 13.1 | 11.95 | 10.93 |
| Juan Nicasio | Phi | mr | 34 | 1.213 | 15 | .400 | 16 | .762 | 16 | .762 | 6.9 | 17.0 | 15.27 | 16.90 |
| Aaron Nola | Min | sp | 28 | .570 | 469 | .254 | 324 | .370 | 330 | .377 | 66.3 | 2.7 | 2.42 | 2.05 |
| Daniel Norris* | Tor | mr | 28 | .587 | 272 | .257 | 145 | .369 | 145 | .369 | 32.4 | 2.9 | 2.66 | 2.15 |
| Ivan Nova | KC | sp | 34 | .900 | 26 | .231 | 20 | .588 | 21 | .618 | 6.0 | 6.7 | 6.58 | 5.92 |
| Darren O'Day | Sea | mr | 38 | .623 | 134 | .261 | 80 | .329 | 99 | .407 | 22.8 | 3.7 | 3.35 | 3.52 |
| Jake Odorizzi | ChW | sp | 31 | 1.117 | 130 | .346 | 130 | .699 | 134 | .720 | 48.7 | 11.7 | 10.37 | 10.14 |
| Shohei Ohtani | Ari | dh | 26 | 1.499 | 36 | .611 | 67 | .870 | 67 | .870 | 31.7 | 27.6 | 24.09 | 27.20 |
| Josh Osich* | Pit | mr | 32 | .989 | 133 | .301 | 130 | .616 | 136 | .645 | 45.4 | 9.4 | 8.69 | 8.83 |
| Roberto Osuna | Tor | mr | 26 | .499 | 47 | .191 | 19 | .311 | 19 | .311 | 3.3 | 1.9 | 1.73 | 1.97 |
| Corey Oswalt | Cle | mr | 27 | .905 | 143 | .364 | 120 | .566 | 123 | .580 | 39.7 | 7.6 | 6.90 | 5.87 |
| Adam Ottavino | Ari | mr | 35 | .941 | 128 | .391 | 136 | .576 | 138 | .585 | 46.1 | 9.2 | 8.42 | 9.16 |
| Johan Oviedo | StL | sp | 23 | .957 | 224 | .366 | 189 | .566 | 202 | .605 | 64.3 | 8.2 | 7.66 | 7.46 |
| Chris Paddack | Mia | sp | 25 | .682 | 361 | .247 | 244 | .441 | 249 | .450 | 55.6 | 3.6 | 3.29 | 3.05 |
| Emilio Pagan | StL | mr | 30 | .507 | 181 | .138 | 98 | .353 | 98 | .353 | 14.9 | 1.8 | 1.62 | 1.50 |
| Enoli Paredes | TB | mr | 25 | .802 | 162 | .364 | 141 | .498 | 142 | .502 | 38.7 | 5.8 | 5.28 | 6.64 |
| Blake Parker | Det | mr | 36 | .597 | 110 | .218 | 84 | .398 | 86 | .408 | 16.7 | 2.8 | 2.48 | 2.31 |
| Luis Patino | NYM | mr | 21 | .880 | 39 | .359 | 37 | .529 | 39 | .557 | 11.8 | 7.4 | 6.68 | 8.03 |
| James Paxton* | StL | sp | 32 | .842 | 270 | .356 | 231 | .504 | 245 | .535 | 73.1 | 6.5 | 5.84 | 5.56 |
| Joel Payamps | Mia | mr | 27 | .879 | 15 | .533 | 10 | .476 | 10 | .476 | 4.0 | 8.9 | 8.04 | 8.60 |
| Nate Pearson | NYM | sp | 24 | .747 | 207 | .179 | 178 | .503 | 181 | .511 | 43.7 | 4.9 | 4.48 | 4.77 |
| Felix Pena | SF | mr | 31 | .672 | 262 | .309 | 158 | .404 | 162 | .414 | 42.5 | 4.2 | 3.87 | 3.59 |
| Freddy Peralta | ChW | mr | 25 | .657 | 154 | .364 | 126 | .404 | 133 | .426 | 31.6 | 3.9 | 3.58 | 3.01 |
| Wandy Peralta* | Tex | mr | 29 | .679 | 273 | .289 | 157 | .407 | 162 | .420 | 40.4 | 4.0 | 3.66 | 3.61 |
| Luis Perdomo | Tor | mr | 28 | .811 | 227 | .264 | 223 | .544 | 223 | .544 | 60.3 | 5.9 | 5.41 | 5.10 |
| Cionel Perez* | Cle | mr | 25 | .878 | 82 | .378 | 62 | .530 | 62 | .530 | 17.5 | 6.1 | 5.46 | 7.01 |
| Martin Perez* | SD | sp | 30 | .725 | 540 | .261 | 358 | .446 | 377 | .470 | 85.3 | 3.9 | 3.60 | 3.93 |
| Oliver Perez* | Oak | mr | 39 | .574 | 100 | .230 | 42 | .323 | 46 | .354 | 10.0 | 2.8 | 2.53 | 2.23 |
| David Peterson* | SF | sp | 25 | .599 | 454 | .238 | 263 | .377 | 270 | .387 | 52.7 | 2.7 | 2.48 | 2.68 |
| Yusmeiro Petit | Bos | mr | 36 | .613 | 146 | .240 | 76 | .374 | 78 | .384 | 18.3 | 3.3 | 3.04 | 2.86 |
| David Phelps | Pit | mr | 34 | .973 | 145 | .290 | 185 | .678 | 185 | .678 | 51.0 | 7.1 | 6.59 | 6.61 |
| Evan Phillips | NYM | mr | 26 | .582 | 73 | .342 | 46 | .346 | 47 | .353 | 10.8 | 3.3 | 2.81 | 3.42 |
| Michael Pineda | LAA | sp | 32 | .677 | 258 | .345 | 148 | .393 | 151 | .401 | 41.3 | 4.3 | 3.83 | 3.53 |
| Nick Pivetta | Atl | mr | 28 | .671 | 97 | .258 | 45 | .369 | 49 | .402 | 12.9 | 4.1 | 3.73 | 3.67 |
| Zach Plesac | Cin | sp | 26 | .631 | 513 | .269 | 300 | .390 | 307 | .399 | 69.1 | 3.2 | 2.91 | 2.71 |
| Adam Plutko | Bos | mr | 29 | .707 | 282 | .252 | 157 | .434 | 163 | .450 | 35.5 | 3.5 | 3.18 | 3.39 |
| Drew Pomeranz* | NYY | mr | 32 | .421 | 130 | .238 | 75 | .280 | 75 | .280 | 11.9 | 1.6 | 1.45 | 1.57 |
| Cody Ponce | NYY | sp | 27 | .607 | 71 | .127 | 40 | .430 | 40 | .430 | 7.1 | 2.6 | 2.31 | 1.69 |
| Daniel Ponce de Leon | Hou | sp | 29 | .802 | 200 | .245 | 234 | .549 | 236 | .554 | 60.6 | 5.6 | 5.06 | 4.97 |
| Sean Poppen | Cin | mr | 27 | .831 | 26 | .385 | 22 | .524 | 22 | .524 | 7.2 | 7.2 | 6.22 | 5.28 |
| Rick Porcello | LAD | sp | 32 | .820 | 532 | .374 | 380 | .485 | 391 | .499 | 121.6 | 6.4 | 5.84 | 5.84 |
| Ryan Pressly | Mil | cl | 32 | .765 | 152 | .322 | 127 | .488 | 128 | .492 | 33.4 | 4.9 | 4.43 | 4.38 |
| Cal Quantrill | ChW | mr | 26 | .709 | 234 | .274 | 138 | .426 | 144 | .444 | 35.7 | 4.1 | 3.80 | 4.00 |
| Jose Quintana* | Mia | mr | 32 | .832 | 66 | .318 | 58 | .542 | 58 | .542 | 15.7 | 5.6 | 5.14 | 5.26 |
| Tanner Rainey | StL | mr | 28 | .536 | 34 | .176 | 21 | .344 | 22 | .361 | 4.1 | 2.3 | 2.07 | 1.58 |
| Brooks Raley* | Pit | mr | 33 | .720 | 119 | .193 | 98 | .445 | 110 | .500 | 25.0 | 4.3 | 3.77 | 3.81 |
| Erasmo Ramirez | Bos | mr | 31 | .487 | 241 | .187 | 103 | .313 | 103 | .313 | 16.7 | 1.7 | 1.52 | 1.38 |
| Nick Ramirez* | Cin | mr | 31 | .912 | 61 | .213 | 61 | .587 | 65 | .625 | 18.4 | 7.0 | 6.31 | 6.16 |
| Noe Ramirez | Mia | mr | 31 | .459 | 303 | .208 | 110 | .274 | 113 | .281 | 18.3 | 1.5 | 1.43 | 1.44 |
| Yohan Ramirez | KC | mr | 26 | .720 | 121 | .182 | 132 | .485 | 138 | .507 | 31.2 | 4.6 | 4.16 | 4.72 |
| Drew Rasmussen | NYM | mr | 25 | .975 | 115 | .374 | 146 | .638 | 147 | .642 | 45.5 | 8.5 | 7.68 | 7.67 |
| Robbie Ray* | StL | sp | 29 | .910 | 365 | .299 | 447 | .602 | 451 | .607 | 130.9 | 7.5 | 6.71 | 6.98 |
| Colin Rea | Sea | mr | 30 | .647 | 112 | .277 | 56 | .384 | 57 | .390 | 14.2 | 3.7 | 3.36 | 3.46 |
| Cody Reed* | ChC | mr | 28 | .885 | 65 | .292 | 62 | .574 | 62 | .574 | 17.7 | 7.0 | 6.22 | 7.45 |
| Sean Reid-Foley | Min | mr | 25 | .678 | 50 | .260 | 31 | .419 | 32 | .432 | 7.7 | 4.0 | 3.66 | 4.02 |
| Alex Reyes | ChW | mr | 26 | .735 | 127 | .346 | 113 | .461 | 115 | .469 | 29.8 | 5.1 | 4.61 | 5.22 |
| Garrett Richards | Mil | sp | 33 | .726 | 435 | .269 | 329 | .465 | 337 | .476 | 85.0 | 4.6 | 4.14 | 3.86 |
| Trevor Richards | KC | mr | 28 | 1.265 | 29 | .345 | 44 | .846 | 44 | .846 | 16.6 | 15.0 | 14.44 | 14.99 |
| Tanner Roark | Tor | sp | 34 | 1.008 | 434 | .387 | 418 | .625 | 427 | .638 | 137.7 | 8.9 | 8.07 | 8.72 |
| Hansel Robles | SD | mr | 30 | .823 | 178 | .275 | 172 | .536 | 176 | .548 | 48.8 | 6.4 | 5.85 | 5.79 |
| Carlos Rodon* | SF | sp | 28 | .796 | 81 | .309 | 56 | .438 | 65 | .508 | 17.5 | 5.8 | 5.33 | 5.96 |
| Joely Rodriguez* | Bal | mr | 29 | .674 | 126 | .294 | 83 | .423 | 84 | .429 | 20.8 | 4.0 | 3.63 | 3.35 |
| Richard Rodriguez | Sea | mr | 31 | .476 | 171 | .257 | 100 | .291 | 105 | .305 | 17.8 | 1.8 | 1.62 | 1.59 |
| Chaz Roe | Cle | mr | 34 | .743 | 100 | .320 | 70 | .440 | 74 | .465 | 19.7 | 4.9 | 4.42 | 4.33 |
| Taylor Rogers* | Mia | cl | 30 | .808 | 65 | .338 | 46 | .495 | 47 | .505 | 12.4 | 5.2 | 4.65 | 4.53 |
| Trevor Rogers* | KC | sp | 23 | .981 | 254 | .425 | 278 | .611 | 283 | .622 | 93.0 | 9.1 | 8.04 | 8.53 |
| Tyler Rogers | Cin | mr | 30 | .679 | 227 | .330 | 130 | .365 | 146 | .410 | 34.3 | 3.6 | 3.28 | 3.85 |
| Jordan Romano | ChC | mr | 28 | .761 | 98 | .224 | 100 | .524 | 100 | .524 | 22.7 | 4.3 | 3.97 | 4.03 |
| Sal Romano | Oak | mr | 27 | .933 | 23 | .391 | 16 | .533 | 16 | .533 | 6.1 | 9.7 | 9.27 | 8.43 |
| Sergio Romo | Col | mr | 38 | .761 | 242 | .269 | 185 | .481 | 192 | .499 | 52.3 | 5.5 | 4.96 | 4.57 |
| Hector Rondon | Tor | mr | 33 | .959 | 116 | .379 | 116 | .604 | 119 | .620 | 38.9 | 8.8 | 7.68 | 7.26 |
| Trevor Rosenthal | ChC | cl | 31 | .578 | 124 | .258 | 90 | .373 | 93 | .386 | 18.2 | 2.7 | 2.44 | 2.11 |
| Ramon Rosso | KC | mr | 25 | .903 | 40 | .300 | 41 | .603 | 41 | .603 | 11.9 | 7.1 | 6.41 | 6.24 |
| Jose Ruiz | Tex | mr | 26 | .755 | 53 | .340 | 39 | .464 | 39 | .464 | 10.7 | 5.6 | 5.08 | 6.64 |
| Kyle Ryan* | SF | mr | 29 | .912 | 176 | .227 | 169 | .615 | 171 | .622 | 43.8 | 6.0 | 5.41 | 5.59 |
| Hyun Jin Ryu* | Ari | sp | 34 | .633 | 593 | .285 | 339 | .387 | 344 | .393 | 74.2 | 3.0 | 2.74 | 2.86 |
| Casey Sadler | SF | mr | 30 | .818 | 122 | .246 | 105 | .536 | 107 | .546 | 27.7 | 5.5 | 5.05 | 4.75 |
| Jeff Samardzija | Pit | sp | 36 | 1.107 | 169 | .272 | 167 | .711 | 175 | .745 | 61.4 | 11.1 | 10.08 | 9.93 |
| Anibal Sanchez | Tex | sp | 37 | .916 | 471 | .323 | 381 | .569 | 389 | .581 | 121.1 | 7.5 | 6.86 | 6.99 |
| Sixto Sanchez | Cle | sp | 22 | .699 | 368 | .332 | 223 | .406 | 232 | .423 | 60.1 | 4.2 | 3.79 | 4.22 |
| Patrick Sandoval* | Pit | sp | 24 | .748 | 177 | .232 | 118 | .496 | 119 | .500 | 25.8 | 3.9 | 3.53 | 3.43 |
| Dennis Santana | Hou | mr | 25 | .737 | 101 | .287 | 77 | .448 | 81 | .471 | 22.0 | 5.2 | 4.62 | 4.54 |
| Max Scherzer | Oak | sp | 36 | .702 | 478 | .339 | 362 | .437 | 365 | .441 | 96.3 | 4.5 | 4.04 | 3.80 |
| Clarke Schmidt | Phi | mr | 25 | .983 | 130 | .369 | 118 | .539 | 134 | .612 | 44.0 | 9.7 | 8.77 | 9.48 |
| John Schreiber | Pit | mr | 27 | .902 | 165 | .370 | 123 | .547 | 126 | .560 | 39.2 | 7.1 | 6.61 | 6.37 |
| Tanner Scott* | ChC | mr | 26 | .460 | 190 | .200 | 86 | .279 | 92 | .299 | 14.9 | 1.7 | 1.49 | 1.50 |
| Andre Scrubb | Was | mr | 26 | .788 | 67 | .299 | 58 | .504 | 59 | .513 | 14.5 | 5.4 | 4.83 | 6.24 |
| Sam Selman* | StL | mr | 30 | .549 | 163 | .239 | 95 | .344 | 99 | .359 | 19.6 | 2.6 | 2.37 | 2.34 |
| Antonio Senzatela | Pit | sp | 26 | .712 | 720 | .283 | 402 | .427 | 410 | .436 | 98.8 | 3.8 | 3.55 | 3.84 |
| Justus Sheffield* | Phi | sp | 25 | .666 | 624 | .306 | 348 | .391 | 356 | .400 | 90.8 | 4.0 | 3.58 | 3.88 |
| Ryan Sherriff* | ChW | mr | 31 | .566 | 123 | .228 | 52 | .338 | 52 | .338 | 12.2 | 2.9 | 2.62 | 2.38 |
| Matt Shoemaker | Cle | sp | 34 | .650 | 168 | .214 | 111 | .432 | 111 | .432 | 23.5 | 3.2 | 2.97 | 2.94 |
| Matt Shoemaker | Sea | sp | 34 | .897 | 139 | .237 | 135 | .603 | 135 | .603 | 35.1 | 5.9 | 5.44 | 6.00 |
| Matt Shoemaker |   | sp | 34 | .764 | 307 | .225 | 246 | .511 | 246 | .511 | 57.6 | 4.4 | 4.01 | 4.23 |
| Chasen Shreve* | Bos | mr | 30 | .537 | 178 | .174 | 122 | .356 | 129 | .376 | 22.9 | 2.4 | 2.16 | 2.09 |
| Lucas Sims | Det | mr | 27 | .528 | 118 | .161 | 93 | .355 | 100 | .382 | 17.0 | 2.3 | 2.13 | 2.11 |
| Brady Singer | KC | sp | 24 | .711 | 458 | .308 | 331 | .443 | 337 | .451 | 85.7 | 4.4 | 4.01 | 4.07 |
| Tarik Skubal* | Sea | sp | 24 | .801 | 275 | .240 | 256 | .530 | 261 | .540 | 63.5 | 4.9 | 4.48 | 4.66 |
| Aaron Slegers | Mil | mr | 28 | .506 | 203 | .256 | 78 | .282 | 82 | .296 | 16.3 | 2.1 | 1.87 | 1.82 |
| Devin Smeltzer* | TB | mr | 25 | .901 | 444 | .347 | 367 | .553 | 379 | .571 | 122.8 | 7.9 | 7.17 | 6.61 |
| Burch Smith | Sea | mr | 31 | .385 | 137 | .212 | 45 | .224 | 45 | .224 | 6.9 | 1.1 | 1.01 | 0.91 |
| Caleb Smith* | Mil | sp | 29 | .751 | 181 | .210 | 148 | .503 | 149 | .507 | 36.2 | 4.8 | 4.31 | 4.54 |
| Drew Smith | Phi | mr | 27 | .501 | 49 | .204 | 24 | .320 | 24 | .320 | 4.2 | 1.9 | 1.78 | 1.90 |
| Josh A. Smith | Col | mr | 33 | .875 | 182 | .346 | 137 | .539 | 139 | .547 | 45.2 | 7.5 | 6.95 | 5.99 |
| Riley Smith | Det | mr | 26 | .556 | 122 | .303 | 78 | .347 | 78 | .347 | 15.8 | 2.6 | 2.39 | 2.60 |
| Will Smith* | Min | mr | 31 | .803 | 66 | .242 | 63 | .548 | 63 | .548 | 16.2 | 5.5 | 4.91 | 4.67 |
| Drew Smyly* | Hou | sp | 32 | .621 | 206 | .340 | 161 | .384 | 165 | .394 | 38.8 | 3.5 | 3.15 | 3.09 |
| Cy Sneed | KC | mr | 28 | .960 | 158 | .411 | 160 | .597 | 161 | .601 | 54.6 | 9.1 | 8.62 | 8.57 |
| Blake Snell* | LAD | sp | 28 | .770 | 411 | .297 | 360 | .501 | 363 | .505 | 91.5 | 4.8 | 4.33 | 4.47 |
| Chad Sobotka | Hou | mr | 27 | 1.357 | 13 | .385 | 15 | .833 | 15 | .833 | 6.7 | 20.0 | 17.95 | 15.68 |
| Joakim Soria | StL | mr | 37 | .581 | 189 | .286 | 98 | .345 | 100 | .352 | 22.2 | 2.9 | 2.57 | 2.59 |
| Mike Soroka | TB | sp | 23 | .702 | 156 | .295 | 92 | .420 | 95 | .434 | 24.0 | 4.4 | 4.02 | 4.42 |
| Gregory Soto* | StL | mr | 26 | .607 | 201 | .269 | 135 | .370 | 143 | .392 | 31.9 | 3.3 | 3.05 | 3.20 |
| Glenn Sparkman | Hou | mr | 29 | 1.105 | 28 | .464 | 26 | .667 | 26 | .667 | 11.0 | 14.8 | 14.06 | 12.73 |
| Jeffrey Springs* | TB | mr | 28 | .958 | 233 | .421 | 233 | .597 | 237 | .608 | 78.1 | 8.5 | 7.66 | 7.48 |
| Craig Stammen | Hou | mr | 37 | .656 | 247 | .312 | 134 | .373 | 143 | .398 | 37.2 | 4.0 | 3.63 | 3.50 |
| Cody Stashak | Cin | mr | 27 | .605 | 158 | .272 | 102 | .392 | 102 | .392 | 21.1 | 2.9 | 2.65 | 2.29 |
| Josh Staumont | TB | mr | 27 | .686 | 165 | .303 | 145 | .428 | 152 | .448 | 37.8 | 4.5 | 4.03 | 4.35 |
| Robert Stock | Cin | mr | 31 | .864 | 84 | .405 | 80 | .530 | 81 | .536 | 23.8 | 6.9 | 6.09 | 7.42 |
| Matt Strahm* | StL | mr | 29 | .741 | 202 | .223 | 129 | .408 | 156 | .494 | 39.0 | 5.0 | 4.53 | 4.71 |
| Stephen Strasburg | Cin | sp | 32 | .806 | 174 | .253 | 121 | .522 | 121 | .522 | 33.1 | 5.6 | 5.10 | 5.21 |
| Chris Stratton | StL | mr | 30 | .712 | 157 | .338 | 116 | .436 | 118 | .444 | 31.6 | 4.7 | 4.27 | 4.33 |
| Ross Stripling | Tex | sp | 31 | 1.013 | 366 | .350 | 375 | .648 | 378 | .653 | 123.9 | 9.3 | 8.53 | 9.17 |
| Pedro Strop | Col | mr | 36 | .658 | 30 | .267 | 18 | .419 | 18 | .419 | 4.5 | 4.5 | 4.05 | 4.43 |
| Andrew Suarez* | SF | mr | 28 | .910 | 82 | .354 | 70 | .551 | 71 | .559 | 21.2 | 7.3 | 6.61 | 7.61 |
| Jose Suarez* | Cle | sp | 23 | 1.167 | 78 | .410 | 77 | .706 | 79 | .725 | 30.4 | 13.4 | 12.09 | 13.54 |
| Ranger Suarez* | Cle | mr | 25 | .943 | 33 | .333 | 25 | .510 | 29 | .592 | 10.0 | 10.4 | 10.16 | 11.06 |
| Wander Suero | Tor | mr | 29 | .669 | 218 | .344 | 142 | .383 | 153 | .412 | 39.0 | 4.1 | 3.70 | 3.67 |
| Cole Sulser | Mil | cl | 31 | .660 | 138 | .239 | 91 | .421 | 94 | .435 | 21.3 | 3.7 | 3.36 | 3.21 |
| Brent Suter* | LAD | mr | 31 | .607 | 273 | .300 | 168 | .361 | 176 | .378 | 39.1 | 3.0 | 2.72 | 2.69 |
| Masahiro Tanaka | ChW | sp | 32 | .714 | 506 | .312 | 326 | .436 | 333 | .445 | 89.6 | 4.6 | 4.17 | 3.81 |
| Stephen Tarpley* | Cin | mr | 28 | .287 | 11 | .091 | 5 | .227 | 5 | .227 | 0.4 | 0.5 | 0.48 | 0.54 |
| Dillon Tate | Pit | mr | 27 | .538 | 116 | .241 | 53 | .310 | 58 | .339 | 11.3 | 2.4 | 2.20 | 2.07 |
| Blake Taylor* | ChW | mr | 25 | .578 | 220 | .209 | 114 | .365 | 117 | .375 | 25.6 | 3.0 | 2.71 | 2.46 |
| Josh Taylor* | Atl | mr | 28 | .704 | 123 | .211 | 82 | .456 | 84 | .467 | 20.8 | 4.6 | 4.14 | 4.27 |
| Julio Teheran | Tex | sp | 30 | .982 | 383 | .298 | 361 | .629 | 367 | .639 | 117.8 | 8.8 | 7.90 | 8.22 |
| Ryan Tepera | Tor | mr | 33 | .827 | 108 | .454 | 105 | .507 | 106 | .512 | 32.2 | 6.8 | 6.11 | 6.39 |
| Caleb Thielbar* | Mia | mr | 34 | .657 | 186 | .328 | 112 | .389 | 113 | .392 | 28.3 | 3.9 | 3.44 | 3.81 |
| Ryan Thompson | Oak | mr | 29 | .819 | 158 | .297 | 109 | .514 | 110 | .519 | 29.2 | 5.2 | 4.76 | 5.19 |
| Trent Thornton | SF | sp | 27 | 1.080 | 145 | .497 | 115 | .608 | 116 | .614 | 52.2 | 14.2 | 12.95 | 12.93 |
| Lewis Thorpe* | Tex | mr | 25 | 1.109 | 403 | .355 | 397 | .701 | 400 | .707 | 136.9 | 10.6 | 9.67 | 10.58 |
| Jesus Tinoco | SF | mr | 26 | .770 | 49 | .224 | 44 | .512 | 45 | .523 | 11.2 | 5.6 | 4.93 | 5.49 |
| Josh Tomlin | Mia | mr | 36 | .704 | 443 | .291 | 287 | .437 | 293 | .446 | 72.3 | 4.0 | 3.68 | 3.38 |
| Justin Topa | NYY | mr | 30 | .752 | 31 | .323 | 23 | .489 | 23 | .489 | 6.3 | 5.2 | 4.53 | 3.32 |
| Touki Toussaint | LAA | sp | 25 | .992 | 84 | .345 | 98 | .616 | 103 | .648 | 32.6 | 8.8 | 7.99 | 8.89 |
| Blake Treinen | ChC | mr | 33 | .689 | 281 | .327 | 168 | .393 | 179 | .419 | 47.9 | 4.4 | 4.03 | 3.99 |
| Andrew Triggs | Mil | mr | 32 | 1.045 | 38 | .368 | 39 | .672 | 39 | .672 | 13.0 | 9.5 | 8.57 | 9.76 |
| Lou Trivino | Atl | mr | 29 | .628 | 89 | .270 | 67 | .404 | 68 | .410 | 14.0 | 3.0 | 2.66 | 2.78 |
| Nick Tropeano | LAA | mr | 30 | .797 | 253 | .360 | 190 | .492 | 192 | .497 | 56.0 | 5.8 | 5.19 | 4.48 |
| Nik Turley* | ChW | mr | 31 | .504 | 183 | .186 | 88 | .306 | 98 | .340 | 17.8 | 2.2 | 1.97 | 1.54 |
| Spencer Turnbull | Bal | sp | 28 | .666 | 484 | .279 | 318 | .414 | 326 | .424 | 79.6 | 4.0 | 3.64 | 3.70 |
| Duane Underwood | Atl | mr | 26 | .901 | 184 | .435 | 178 | .555 | 182 | .567 | 57.1 | 7.2 | 6.61 | 6.71 |
| Jose Urena | Min | sp | 29 | .742 | 293 | .283 | 188 | .445 | 195 | .462 | 51.9 | 4.9 | 4.44 | 4.45 |
| Julio Urias* | Bal | sp | 24 | .626 | 527 | .262 | 285 | .384 | 289 | .389 | 63.1 | 3.1 | 2.79 | 2.87 |
| Jose Urquidy | Sea | sp | 26 | .603 | 303 | .201 | 163 | .376 | 170 | .392 | 35.8 | 3.0 | 2.75 | 2.91 |
| Cesar Valdez | Oak | cl | 36 | .434 | 119 | .185 | 51 | .282 | 51 | .282 | 8.8 | 1.7 | 1.56 | 1.24 |
| Framber Valdez* | Mia | sp | 27 | .637 | 549 | .332 | 300 | .364 | 312 | .379 | 71.8 | 3.2 | 2.89 | 3.00 |
| Phillips Valdez | Mia | mr | 29 | .710 | 230 | .317 | 144 | .417 | 150 | .435 | 40.8 | 4.9 | 4.55 | 5.08 |
| Vince Velasquez | Tor | sp | 29 | .998 | 267 | .457 | 284 | .609 | 291 | .624 | 102.5 | 10.0 | 9.02 | 9.29 |
| Justin Verlander | Hou | sp | 38 | .883 | 46 | .435 | 37 | .521 | 37 | .521 | 12.9 | 8.3 | 7.47 | 8.66 |
| Nick Vincent | Phi | mr | 34 | .848 | 133 | .195 | 122 | .587 | 123 | .591 | 25.7 | 4.3 | 3.91 | 4.52 |
| Austin Voth | KC | sp | 29 | .889 | 493 | .280 | 437 | .565 | 454 | .587 | 128.5 | 6.6 | 6.03 | 6.17 |
| Jacob Waguespack | Tor | mr | 27 | 1.056 | 81 | .494 | 70 | .614 | 70 | .614 | 28.2 | 12.1 | 10.72 | 12.33 |
| Adam Wainwright | Col | sp | 39 | .792 | 495 | .317 | 372 | .496 | 378 | .504 | 99.9 | 5.1 | 4.68 | 4.83 |
| Taijuan Walker | Hou | sp | 28 | .663 | 551 | .263 | 352 | .414 | 360 | .423 | 85.4 | 3.7 | 3.40 | 3.32 |
| Tony Watson* | Sea | mr | 36 | .497 | 159 | .176 | 74 | .314 | 78 | .331 | 13.6 | 1.9 | 1.79 | 1.44 |
| Luke Weaver | ChW | sp | 27 | .847 | 213 | .357 | 183 | .534 | 185 | .539 | 54.7 | 6.4 | 5.78 | 5.08 |
| Jacob Webb | TB | mr | 27 | .610 | 84 | .310 | 49 | .371 | 49 | .371 | 11.5 | 3.4 | 3.12 | 3.50 |
| Logan Webb | Bos | sp | 24 | .866 | 491 | .328 | 386 | .533 | 399 | .551 | 113.8 | 6.3 | 5.72 | 5.69 |
| Tyler Webb* | NYY | mr | 30 | .699 | 155 | .258 | 109 | .452 | 109 | .452 | 25.3 | 3.9 | 3.59 | 3.98 |
| Ryan Weber | Cle | mr | 30 | .774 | 426 | .275 | 286 | .481 | 295 | .496 | 73.4 | 4.7 | 4.24 | 4.51 |
| Jordan Weems | Oak | mr | 28 | .886 | 42 | .310 | 40 | .571 | 40 | .571 | 12.2 | 7.5 | 6.75 | 6.86 |
| J.B. Wendelken | Was | mr | 28 | .470 | 130 | .231 | 57 | .289 | 57 | .289 | 8.4 | 1.4 | 1.26 | 1.41 |
| Zack Wheeler | SF | sp | 31 | .637 | 687 | .291 | 354 | .364 | 380 | .391 | 81.7 | 3.0 | 2.77 | 2.93 |
| Mitch White | Mil | mr | 26 | .800 | 23 | .391 | 11 | .440 | 11 | .440 | 4.0 | 6.7 | 6.01 | 5.55 |
| Kodi Whitley | Tex | mr | 26 | .801 | 94 | .266 | 64 | .500 | 65 | .508 | 18.0 | 5.7 | 5.34 | 5.78 |
| Rowan Wick | NYM | mr | 28 | .863 | 209 | .440 | 171 | .510 | 175 | .522 | 56.0 | 7.1 | 6.44 | 6.26 |
| Taylor Widener | LAD | mr | 26 | .760 | 130 | .200 | 124 | .512 | 128 | .529 | 29.5 | 4.7 | 4.21 | 3.97 |
| Brad Wieck* | Oak | mr | 29 | .297 | 21 | .095 | 6 | .214 | 6 | .214 | 0.5 | 0.5 | 0.47 | 0.39 |
| Devin Williams | NYY | mr | 26 | .316 | 87 | .161 | 47 | .215 | 49 | .224 | 5.8 | 0.9 | 0.77 | 0.72 |
| Taylor Williams | Det | cl | 29 | .621 | 37 | .297 | 20 | .357 | 21 | .375 | 4.2 | 2.6 | 2.40 | 2.39 |
| Trevor Williams | LAD | sp | 29 | .888 | 68 | .353 | 62 | .549 | 63 | .558 | 19.0 | 7.1 | 6.69 | 7.43 |
| Bryse Wilson | Ari | mr | 23 | .810 | 92 | .293 | 78 | .513 | 79 | .520 | 20.8 | 5.5 | 5.16 | 5.63 |
| Justin Wilson* | Mil | mr | 33 | .646 | 190 | .305 | 116 | .383 | 120 | .396 | 28.0 | 3.6 | 3.25 | 3.73 |
| Dan Winkler | Tex | mr | 31 | .595 | 133 | .263 | 81 | .368 | 83 | .377 | 17.4 | 2.9 | 2.61 | 3.01 |
| Matt Wisler | Sea | mr | 28 | .620 | 230 | .274 | 178 | .396 | 184 | .410 | 40.9 | 3.5 | 3.16 | 3.29 |
| Nick Wittgren | Was | mr | 30 | .745 | 184 | .272 | 147 | .465 | 158 | .500 | 38.4 | 4.5 | 4.07 | 3.58 |
| Asher Wojciechowski | Ari | sp | 32 | .980 | 365 | .304 | 351 | .634 | 357 | .644 | 113.5 | 8.5 | 7.66 | 7.85 |
| Jake Woodford | Pit | mr | 24 | .866 | 77 | .299 | 63 | .553 | 64 | .561 | 17.3 | 5.7 | 5.18 | 5.75 |
| Brandon Woodruff | Cin | sp | 28 | .642 | 570 | .328 | 386 | .385 | 403 | .402 | 92.3 | 3.4 | 3.07 | 3.16 |
| Brandon Workman | Col | cl | 32 | 1.254 | 59 | .458 | 73 | .785 | 74 | .796 | 30.3 | 16.0 | 14.73 | 14.94 |
| Kyle Wright | TB | sp | 25 | .828 | 346 | .283 | 295 | .532 | 297 | .536 | 76.3 | 5.5 | 5.04 | 5.88 |
| Miguel Yajure | LAA | mr | 23 | .753 | 155 | .277 | 103 | .462 | 105 | .471 | 29.9 | 5.6 | 5.11 | 5.33 |
| Shun Yamaguchi | TB | mr | 33 | .883 | 193 | .280 | 198 | .579 | 200 | .585 | 56.2 | 6.8 | 6.15 | 6.59 |
| Ryan Yarbrough* | LAA | sp | 29 | .655 | 559 | .290 | 268 | .358 | 295 | .394 | 75.1 | 3.8 | 3.42 | 3.33 |
| Eric Yardley | Bos | mr | 30 | .621 | 129 | .256 | 83 | .399 | 84 | .404 | 16.6 | 2.9 | 2.61 | 2.65 |
| Huascar Ynoa | Bos | sp | 23 | .820 | 217 | .304 | 163 | .502 | 170 | .523 | 48.0 | 6.1 | 5.53 | 5.65 |
| Alex Young* | Atl | mr | 27 | 1.048 | 183 | .322 | 183 | .673 | 185 | .680 | 59.5 | 9.4 | 8.61 | 8.83 |
| T.J. Zeuch | Atl | mr | 25 | 1.076 | 61 | .344 | 57 | .679 | 57 | .679 | 19.4 | 10.3 | 9.62 | 9.27 |
| Kyle Zimmer | ChW | mr | 29 | .562 | 162 | .259 | 92 | .357 | 94 | .364 | 19.6 | 2.7 | 2.45 | 1.79 |
| Bruce Zimmermann* | StL | sp | 26 | .755 | 50 | .260 | 34 | .420 | 39 | .481 | 10.7 | 5.8 | 5.31 | 5.98 |
| Jordan Zimmermann | Cle | sp | 35 | .946 | 109 | .431 | 84 | .560 | 84 | .560 | 28.8 | 8.4 | 7.46 | 8.23 |
| Tyler Zuber | Atl | mr | 26 | .772 | 154 | .214 | 190 | .525 | 193 | .533 | 46.2 | 5.3 | 4.73 | 5.56 |
| Start |
| Name | Team | P | Age | GS | CG | CG% | SHO | QS | QS% | RS | RS/G | RL | RLS | RL% | PCH/G | STR% |
| Bryan Abreu | Hou | mr | 24 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 0 | 0 | .000 | 25.0 | .560 |
| Jason Adam | Tor | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 15 | 2 | .133 | 21.7 | .616 |
| Austin Adams | LAA | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 2 | 2 | 1.000 | 22.0 | .477 |
| Keegan Akin* | Min | sp | 26 | 21 | 0 | .000 | 0 | 7 | .333 | 101 | 4.8 | 17 | 5 | .294 | 85.0 | .609 |
| Jorge Alcala | Col | mr | 25 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 9 | 3 | .333 | 28.0 | .635 |
| Sandy Alcantara | SD | sp | 25 | 18 | 1 | .056 | 0 | 9 | .500 | 77 | 4.3 | 12 | 5 | .417 | 96.7 | .614 |
| Scott Alexander* | LAD | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 15 | 5 | .333 | 20.7 | .550 |
| Tyler Alexander* | LAD | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 13 | 3 | .231 | 24.2 | .649 |
| Kolby Allard* | Min | sp | 23 | 27 | 0 | .000 | 0 | 7 | .259 | 117 | 4.3 | 21 | 7 | .333 | 81.0 | .583 |
| Yency Almonte | Mia | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 26 | 5 | .192 | 18.1 | .648 |
| Dan Altavilla | Tex | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 32 | 13 | .406 | 27.3 | .573 |
| Jose Alvarado* | Pit | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 4 | 0 | .000 | 20.3 | .611 |
| Jose Alvarez* | Cin | mr | 32 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 1 | 0 | .000 | 21.9 | .611 |
| Adbert Alzolay | ChC | sp | 26 | 13 | 0 | .000 | 0 | 3 | .231 | 65 | 5.0 | 4 | 3 | .750 | 86.5 | .584 |
| Brett Anderson* | TB | sp | 33 | 30 | 0 | .000 | 0 | 9 | .300 | 92 | 3.1 | 22 | 11 | .500 | 79.8 | .676 |
| Chase Anderson | TB | sp | 33 | 1 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 31 | 14 | .452 | 34.8 | .644 |
| Ian Anderson | SF | sp | 23 | 19 | 0 | .000 | 0 | 16 | .842 | 79 | 4.2 | 8 | 1 | .125 | 107.3 | .623 |
| Nick Anderson | SD | cl | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 5 | 2 | .400 | 21.4 | .666 |
| Shaun Anderson | SF | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 4 | 3 | .750 | 27.4 | .582 |
| Tyler Anderson* | Oak | sp | 31 | 24 | 0 | .000 | 0 | 10 | .417 | 118 | 4.9 | 22 | 10 | .455 | 75.0 | .617 |
| Matt Andriese | SF | mr | 31 | 3 | 0 | .000 | 0 | 0 | .000 | 9 | 3.0 | 2 | 1 | .500 | 30.4 | .621 |
| Tejay Antone | ChW | mr | 27 | 14 | 0 | .000 | 0 | 7 | .500 | 63 | 4.5 | 19 | 2 | .105 | 55.6 | .603 |
| Shawn Armstrong | Hou | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 2 | 2 | 1.000 | 18.1 | .630 |
| Shawn Armstrong | Mil | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 3 | 0 | .000 | 18.9 | .649 |
| Shawn Armstrong |   | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 5 | 2 | .400 | 18.5 | .639 |
| Jake Arrieta | KC | sp | 35 | 24 | 3 | .125 | 1 | 7 | .292 | 97 | 4.0 | 18 | 7 | .389 | 96.8 | .599 |
| Luis Avilan* | LAD | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 0 | 0 | .000 | 12.3 | .612 |
| Dakota Bacus | Cin | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 2 | 0 | .000 | 25.5 | .627 |
| Dakota Bacus | Cle | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 8 | 3 | .375 | 22.1 | .542 |
| Dakota Bacus |   | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 10 | 3 | .300 | 22.4 | .550 |
| Pedro Baez | Col | mr | 33 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 23 | 5 | .217 | 25.6 | .612 |
| Brandon Bailey | Min | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 7 | 2 | .286 | 22.7 | .575 |
| Homer Bailey | SF | sp | 35 | 5 | 0 | .000 | 0 | 0 | .000 | 24 | 4.8 | 5 | 1 | .200 | 102.8 | .553 |
| Caleb Baragar* | Det | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 15 | 3 | .200 | 20.2 | .646 |
| Daniel Bard | NYY | cl | 36 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 8 | 4 | .500 | 25.8 | .632 |
| Scott Barlow | Bos | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 26 | 5 | .192 | 17.9 | .647 |
| Jacob Barnes | Was | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 2 | 0 | .000 | 20.6 | .660 |
| Matt Barnes | Min | cl | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 13 | 3 | .231 | 23.1 | .597 |
| Jaime Barria | Atl | sp | 24 | 14 | 1 | .071 | 1 | 10 | .714 | 59 | 4.2 | 0 | 0 | .000 | 92.9 | .651 |
| Tyler Bashlor | Phi | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 9 | 4 | .444 | 21.5 | .588 |
| Anthony Bass | Mil | cl | 33 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 11 | 3 | .273 | 24.8 | .658 |
| Chris Bassitt | Was | sp | 32 | 33 | 0 | .000 | 0 | 19 | .576 | 226 | 6.8 | 15 | 6 | .400 | 92.2 | .641 |
| Trevor Bauer | Det | sp | 30 | 33 | 4 | .121 | 3 | 29 | .879 | 175 | 5.3 | 6 | 2 | .333 | 108.8 | .645 |
| Cam Bedrosian | Ari | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 2 | 2 | 1.000 | 20.7 | .608 |
| Jalen Beeks* | Bos | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 16 | 1 | .063 | 33.4 | .678 |
| Wes Benjamin* | Mia | mr | 27 | 7 | 0 | .000 | 0 | 3 | .429 | 38 | 5.4 | 3 | 1 | .333 | 86.5 | .618 |
| Travis Bergen* | Mia | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 0 | 0 | .000 | 18.0 | .556 |
| Jose Berrios | Cin | sp | 27 | 36 | 0 | .000 | 0 | 10 | .278 | 207 | 5.8 | 34 | 16 | .471 | 91.6 | .606 |
| Dellin Betances | Oak | mr | 33 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 5 | 0 | .000 | 18.0 | .542 |
| Joe Biagini | Tor | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 16 | 6 | .375 | 21.1 | .555 |
| Shane Bieber | Col | sp | 26 | 30 | 2 | .067 | 2 | 21 | .700 | 196 | 6.5 | 11 | 2 | .182 | 104.9 | .631 |
| Brandon Bielak | Cle | sp | 25 | 18 | 0 | .000 | 0 | 3 | .167 | 86 | 4.8 | 12 | 0 | .000 | 65.3 | .571 |
| Ray Black | ChW | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 2 | 0 | .000 | 17.5 | .566 |
| Richard Bleier* | TB | mr | 34 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 15 | 6 | .400 | 17.5 | .632 |
| Scott Blewett | Tex | mr | 25 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 6 | 0 | .000 | 31.0 | .613 |
| Ryan Borucki* | Min | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 18 | 3 | .167 | 21.5 | .568 |
| Brad Boxberger | Tex | mr | 33 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 32 | 9 | .281 | 20.5 | .589 |
| Matthew Boyd* | LAA | sp | 30 | 22 | 0 | .000 | 0 | 4 | .182 | 141 | 6.4 | 21 | 8 | .381 | 76.4 | .622 |
| Brad Brach | Phi | mr | 35 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 26 | 9 | .346 | 23.5 | .521 |
| Archie Bradley | Was | cl | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 13 | 3 | .231 | 21.9 | .641 |
| Ryan Brasier | StL | mr | 33 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 27 | 7 | .259 | 21.6 | .604 |
| Steven Brault* | Mil | sp | 29 | 30 | 0 | .000 | 0 | 4 | .133 | 213 | 7.1 | 24 | 12 | .500 | 80.2 | .585 |
| Ben Braymer* | ChW | mr | 27 | 4 | 0 | .000 | 0 | 1 | .250 | 18 | 4.5 | 3 | 1 | .333 | 73.7 | .609 |
| Colten Brewer | Tor | mr | 28 | 22 | 0 | .000 | 0 | 4 | .182 | 87 | 4.0 | 16 | 11 | .688 | 76.0 | .595 |
| Austin Brice | SF | mr | 29 | 3 | 0 | .000 | 0 | 0 | .000 | 7 | 2.3 | 5 | 1 | .200 | 26.0 | .579 |
| Zack Britton* | Oak | cl | 33 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 3 | 1 | .333 | 16.1 | .594 |
| Connor Brogdon | Pit | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 0 | 0 | .000 | 21.0 | .652 |
| JT Brubaker | Mia | sp | 27 | 18 | 0 | .000 | 0 | 9 | .500 | 78 | 4.3 | 5 | 2 | .400 | 92.8 | .634 |
| Kris Bubic* | Atl | sp | 23 | 29 | 0 | .000 | 0 | 14 | .483 | 136 | 4.7 | 24 | 4 | .167 | 92.7 | .612 |
| Walker Buehler | Was | sp | 26 | 25 | 3 | .120 | 1 | 19 | .760 | 150 | 6.0 | 8 | 0 | .000 | 96.0 | .634 |
| Madison Bumgarner* | LAA | sp | 31 | 20 | 0 | .000 | 0 | 3 | .150 | 83 | 4.2 | 13 | 5 | .385 | 51.1 | .652 |
| Aaron Bummer* | ChC | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 8 | 0 | .000 | 20.1 | .589 |
| Dylan Bundy | NYY | sp | 28 | 33 | 2 | .061 | 2 | 27 | .818 | 147 | 4.5 | 12 | 2 | .167 | 103.4 | .656 |
| Corbin Burnes | NYY | sp | 26 | 29 | 0 | .000 | 0 | 22 | .759 | 129 | 4.4 | 13 | 2 | .154 | 103.1 | .618 |
| Ty Buttrey | NYM | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 24 | 10 | .417 | 21.7 | .648 |
| Genesis Cabrera* | Oak | mr | 24 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 19 | 7 | .368 | 19.4 | .569 |
| Trevor Cahill | Bal | sp | 33 | 20 | 0 | .000 | 0 | 4 | .200 | 130 | 6.5 | 10 | 2 | .200 | 83.5 | .573 |
| Griffin Canning | TB | sp | 25 | 33 | 0 | .000 | 0 | 10 | .303 | 100 | 3.0 | 24 | 11 | .458 | 89.6 | .606 |
| Carlos Carrasco | StL | sp | 34 | 32 | 0 | .000 | 0 | 15 | .469 | 132 | 4.1 | 8 | 3 | .375 | 100.4 | .624 |
| Daniel Castano* | Cle | sp | 26 | 18 | 0 | .000 | 0 | 5 | .278 | 89 | 4.9 | 15 | 9 | .600 | 88.9 | .598 |
| Ryan Castellani | Atl | sp | 25 | 29 | 0 | .000 | 0 | 8 | .276 | 101 | 3.5 | 15 | 2 | .133 | 87.9 | .572 |
| Humberto Castellanos | Pit | mr | 23 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 3 | 0 | .000 | 36.5 | .530 |
| Diego Castillo | Cin | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 20 | 6 | .300 | 22.1 | .573 |
| Luis Castillo | Phi | sp | 28 | 33 | 2 | .061 | 2 | 18 | .545 | 139 | 4.2 | 18 | 10 | .556 | 105.2 | .633 |
| Miguel Castro | Sea | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 15 | 5 | .333 | 21.2 | .607 |
| Dylan Cease | SD | sp | 25 | 15 | 0 | .000 | 0 | 5 | .333 | 82 | 5.5 | 9 | 3 | .333 | 87.8 | .583 |
| Blake Cederlind | Oak | mr | 25 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 3 | 0 | .000 | 12.3 | .558 |
| Luis Cessa | SD | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 11 | 6 | .545 | 27.4 | .670 |
| Andrew Chafin* | Phi | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 18 | 8 | .444 | 19.8 | .595 |
| Aroldis Chapman* | Tor | mr | 33 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 7 | 0 | .000 | 17.7 | .653 |
| Tyler Chatwood | SF | sp | 31 | 17 | 0 | .000 | 0 | 0 | .000 | 80 | 4.7 | 19 | 5 | .263 | 86.2 | .592 |
| Jesse Chavez | Ari | mr | 37 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 16 | 6 | .375 | 25.8 | .602 |
| Yonny Chirinos | Det | sp | 27 | 5 | 0 | .000 | 0 | 1 | .200 | 19 | 3.8 | 9 | 2 | .222 | 59.8 | .625 |
| Adam Cimber | Tex | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 26 | 10 | .385 | 19.6 | .613 |
| Steve Cishek | Cin | mr | 35 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 15 | 5 | .333 | 22.0 | .577 |
| Jose Cisnero | LAA | mr | 32 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 26 | 3 | .115 | 17.3 | .623 |
| Aaron Civale | Cle | sp | 26 | 33 | 2 | .061 | 1 | 11 | .333 | 114 | 3.5 | 30 | 8 | .267 | 103.0 | .659 |
| Taylor Clarke | Tor | mr | 28 | 22 | 0 | .000 | 0 | 10 | .455 | 119 | 5.4 | 4 | 1 | .250 | 89.5 | .608 |
| Alex Claudio* | Cin | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 6 | 2 | .333 | 19.1 | .628 |
| Alex Claudio* | Cle | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 13 | 2 | .154 | 20.4 | .652 |
| Alex Claudio* |   | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 19 | 4 | .211 | 20.0 | .645 |
| Mike Clevinger | Phi | sp | 30 | 27 | 0 | .000 | 0 | 10 | .370 | 111 | 4.1 | 24 | 12 | .500 | 96.5 | .617 |
| Tyler Clippard | Oak | mr | 36 | 5 | 0 | .000 | 0 | 0 | .000 | 21 | 4.2 | 13 | 2 | .154 | 18.0 | .643 |
| Alex Cobb | Bal | sp | 33 | 30 | 1 | .033 | 0 | 16 | .533 | 163 | 5.4 | 13 | 4 | .308 | 88.7 | .621 |
| Kyle Cody | Det | sp | 26 | 19 | 0 | .000 | 0 | 7 | .368 | 78 | 4.1 | 16 | 5 | .313 | 82.7 | .579 |
| A.J. Cole | Tor | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 7 | 0 | .000 | 25.1 | .626 |
| Gerrit Cole | Col | sp | 30 | 31 | 0 | .000 | 0 | 19 | .613 | 199 | 6.4 | 14 | 3 | .214 | 100.6 | .656 |
| Alex Colome | Min | cl | 32 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 8 | 6 | .750 | 16.9 | .591 |
| Sam Coonrod | SF | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 19 | 5 | .263 | 27.0 | .598 |
| Patrick Corbin* | Atl | sp | 31 | 33 | 2 | .061 | 1 | 16 | .485 | 142 | 4.3 | 20 | 7 | .350 | 91.9 | .656 |
| Jimmy Cordero | Phi | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 11 | 3 | .273 | 16.2 | .630 |
| Dylan Covey | Min | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 8 | 1 | .125 | 35.8 | .657 |
| Stefan Crichton | Mil | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 17 | 2 | .118 | 20.1 | .667 |
| Kyle Crick | Bal | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 0 | 0 | .000 | 8.0 | .813 |
| Garrett Crochet* | StL | mr | 22 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 1 | 0 | .000 | 46.0 | .630 |
| Wil Crowe | Tex | sp | 26 | 4 | 0 | .000 | 0 | 0 | .000 | 13 | 3.3 | 5 | 0 | .000 | 70.8 | .537 |
| Johnny Cueto | Oak | sp | 35 | 33 | 1 | .030 | 1 | 14 | .424 | 181 | 5.5 | 18 | 10 | .556 | 94.6 | .611 |
| John Curtiss | Bal | mr | 28 | 3 | 0 | .000 | 0 | 0 | .000 | 21 | 7.0 | 17 | 1 | .059 | 26.3 | .670 |
| Yu Darvish | LAA | sp | 34 | 33 | 5 | .152 | 4 | 25 | .758 | 152 | 4.6 | 13 | 1 | .077 | 103.2 | .677 |
| Zach Davies | Pit | sp | 28 | 33 | 5 | .152 | 1 | 19 | .576 | 110 | 3.3 | 12 | 4 | .333 | 101.8 | .637 |
| Wade Davis | Col | cl | 35 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 5 | 4 | .800 | 25.0 | .631 |
| Grant Dayton* | Atl | mr | 33 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 18 | 6 | .333 | 28.8 | .622 |
| Chase De Jong | Col | sp | 27 | 6 | 0 | .000 | 0 | 0 | .000 | 36 | 6.0 | 5 | 0 | .000 | 68.7 | .587 |
| Jacob deGrom | LAD | sp | 33 | 34 | 1 | .029 | 0 | 24 | .706 | 166 | 4.9 | 26 | 4 | .154 | 104.5 | .636 |
| Anthony DeSclafani | Min | sp | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 20 | 8 | .400 | 29.5 | .589 |
| Ross Detwiler* | NYM | mr | 35 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 29 | 12 | .414 | 20.0 | .678 |
| Chris Devenski | KC | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 2 | 1 | .500 | 27.0 | .574 |
| Edwin Diaz | NYY | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 12 | 3 | .250 | 21.1 | .597 |
| Jairo Diaz | LAD | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 7 | 3 | .429 | 28.2 | .563 |
| Jake Diekman* | Sea | mr | 34 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 7 | 2 | .286 | 18.5 | .605 |
| Randy Dobnak | Oak | sp | 26 | 24 | 0 | .000 | 0 | 12 | .500 | 97 | 4.0 | 15 | 6 | .400 | 83.5 | .639 |
| Rafael Dolis | LAA | mr | 33 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 13 | 1 | .077 | 18.5 | .581 |
| Sean Doolittle* | Cle | mr | 34 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 13 | 8 | .615 | 19.0 | .613 |
| Tommy Doyle | Tor | mr | 25 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 5 | 2 | .400 | 19.6 | .643 |
| Oliver Drake | LAA | mr | 34 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 6 | 0 | .000 | 19.8 | .609 |
| Tyler Duffey | TB | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 7 | 0 | .000 | 21.9 | .620 |
| Danny Duffy* | NYY | sp | 32 | 32 | 1 | .031 | 1 | 21 | .656 | 139 | 4.3 | 14 | 3 | .214 | 94.5 | .629 |
| Robert Dugger | KC | mr | 25 | 1 | 0 | .000 | 0 | 0 | .000 | 5 | 5.0 | 0 | 0 | .000 | 58.5 | .632 |
| Justin Dunn | Hou | sp | 25 | 30 | 0 | .000 | 0 | 11 | .367 | 94 | 3.1 | 24 | 3 | .125 | 86.9 | .576 |
| Dane Dunning | NYM | sp | 26 | 22 | 0 | .000 | 0 | 14 | .636 | 69 | 3.1 | 15 | 2 | .133 | 94.1 | .607 |
| Carl Edwards | Bal | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 1 | 0 | .000 | 25.3 | .526 |
| Zach Eflin | Mia | sp | 27 | 30 | 0 | .000 | 0 | 18 | .600 | 139 | 4.6 | 11 | 0 | .000 | 94.9 | .642 |
| Seth Elledge | Tex | mr | 25 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 32 | 6 | .188 | 22.2 | .551 |
| Nathan Eovaldi | ChW | sp | 31 | 27 | 0 | .000 | 0 | 9 | .333 | 148 | 5.5 | 18 | 9 | .500 | 83.6 | .678 |
| Robbie Erlin* | NYM | sp | 30 | 20 | 0 | .000 | 0 | 6 | .300 | 83 | 4.2 | 14 | 11 | .786 | 75.0 | .653 |
| Thomas Eshelman | Tex | mr | 27 | 12 | 0 | .000 | 0 | 4 | .333 | 42 | 3.5 | 6 | 4 | .667 | 77.8 | .608 |
| Carlos Estevez | Phi | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 17 | 6 | .353 | 26.1 | .610 |
| Pete Fairbanks | Det | mr | 27 | 2 | 0 | .000 | 0 | 0 | .000 | 14 | 7.0 | 39 | 9 | .231 | 20.4 | .594 |
| Jeurys Familia | Was | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 1 | 1 | 1.000 | 21.4 | .603 |
| Buck Farmer | Min | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 19 | 7 | .368 | 22.9 | .656 |
| Erick Fedde | Sea | sp | 28 | 22 | 0 | .000 | 0 | 9 | .409 | 126 | 5.7 | 16 | 4 | .250 | 63.9 | .588 |
| Caleb Ferguson* | Was | mr | 24 | 4 | 0 | .000 | 0 | 0 | .000 | 21 | 5.3 | 11 | 5 | .455 | 25.0 | .664 |
| J.P. Feyereisen | LAA | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 10 | 4 | .400 | 34.2 | .577 |
| Mike Fiers | SD | sp | 36 | 32 | 0 | .000 | 0 | 12 | .375 | 174 | 5.4 | 26 | 13 | .500 | 90.1 | .623 |
| Kyle Finnegan | Col | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 39 | 10 | .256 | 20.6 | .597 |
| Jack Flaherty | Det | sp | 25 | 28 | 1 | .036 | 0 | 16 | .571 | 153 | 5.5 | 18 | 5 | .278 | 96.5 | .597 |
| Josh Fleming* | Mia | sp | 25 | 16 | 0 | .000 | 0 | 9 | .563 | 97 | 6.1 | 9 | 0 | .000 | 87.1 | .661 |
| Dylan Floro | Min | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 25 | 4 | .160 | 21.4 | .689 |
| Wilmer Font | Ari | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 34 | 15 | .441 | 28.6 | .553 |
| Matt Foster | Was | mr | 26 | 6 | 0 | .000 | 0 | 0 | .000 | 72 | 12.0 | 11 | 5 | .455 | 22.1 | .620 |
| Kyle Freeland* | ChW | sp | 28 | 36 | 1 | .028 | 0 | 21 | .583 | 157 | 4.4 | 35 | 6 | .171 | 96.2 | .626 |
| Sam Freeman* | Sea | mr | 34 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 3 | 0 | .000 | 18.3 | .607 |
| Max Fried* | Oak | sp | 27 | 33 | 0 | .000 | 0 | 19 | .576 | 131 | 4.0 | 15 | 4 | .267 | 93.0 | .633 |
| Jace Fry* | Cle | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 19 | 7 | .368 | 22.7 | .595 |
| Paul Fry* | Oak | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 3 | 2 | .667 | 15.0 | .613 |
| Carson Fulmer | SD | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 2 | 0 | .000 | 27.3 | .597 |
| Michael Fulmer | Tex | sp | 28 | 28 | 0 | .000 | 0 | 2 | .071 | 108 | 3.9 | 28 | 14 | .500 | 68.3 | .622 |
| Giovanny Gallegos | Hou | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 9 | 1 | .111 | 20.2 | .644 |
| Zac Gallen | Ari | sp | 25 | 33 | 2 | .061 | 0 | 20 | .606 | 120 | 3.6 | 22 | 9 | .409 | 111.1 | .606 |
| John Gant | ChC | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 14 | 3 | .214 | 24.2 | .582 |
| Bryan Garcia | Atl | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 4 | 1 | .250 | 24.7 | .601 |
| Deivi Garcia | Mia | sp | 22 | 4 | 0 | .000 | 0 | 4 | 1.000 | 10 | 2.5 | 0 | 0 | .000 | 93.8 | .664 |
| Edgar Garcia | Phi | mr | 24 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 1 | 1 | 1.000 | 21.0 | .571 |
| Jarlin Garcia* | LAA | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 17 | 5 | .294 | 18.7 | .635 |
| Luis Garcia | KC | mr | 34 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 5 | 1 | .200 | 35.9 | .550 |
| Luis Garcia | Pit | mr | 24 | 4 | 0 | .000 | 0 | 2 | .500 | 17 | 4.3 | 1 | 1 | 1.000 | 51.0 | .627 |
| Rico Garcia | LAD | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 1 | 1 | 1.000 | 25.7 | .593 |
| Rony Garcia | Col | mr | 23 | 10 | 0 | .000 | 0 | 2 | .200 | 40 | 4.0 | 11 | 4 | .364 | 45.2 | .627 |
| Yimi Garcia | KC | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 2 | 0 | .000 | 24.6 | .622 |
| Amir Garrett* | Phi | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 6 | 1 | .167 | 17.7 | .649 |
| Braxton Garrett* | TB | sp | 23 | 6 | 0 | .000 | 0 | 0 | .000 | 20 | 3.3 | 10 | 6 | .600 | 68.7 | .500 |
| Kevin Gausman | SD | sp | 30 | 30 | 0 | .000 | 0 | 13 | .433 | 134 | 4.5 | 18 | 7 | .389 | 98.1 | .642 |
| Sam Gaviglio | Col | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 3 | 1 | .333 | 32.6 | .500 |
| Joey Gerber | Phi | mr | 24 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 15 | 4 | .267 | 19.1 | .612 |
| Ian Gibaut | Hou | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 5 | 4 | .800 | 25.7 | .548 |
| Kyle Gibson | Oak | sp | 33 | 3 | 0 | .000 | 0 | 1 | .333 | 34 | 11.3 | 1 | 0 | .000 | 89.3 | .634 |
| Kevin Ginkel | Mil | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 3 | 0 | .000 | 25.5 | .588 |
| Lucas Giolito | SD | sp | 26 | 33 | 1 | .030 | 1 | 21 | .636 | 173 | 5.2 | 18 | 7 | .389 | 102.8 | .616 |
| Mychal Givens | SD | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 8 | 2 | .250 | 28.9 | .554 |
| Tyler Glasnow | Sea | sp | 27 | 33 | 0 | .000 | 0 | 19 | .576 | 190 | 5.8 | 21 | 3 | .143 | 95.0 | .625 |
| Zack Godley | Col | sp | 31 | 22 | 0 | .000 | 0 | 4 | .182 | 148 | 6.7 | 19 | 7 | .368 | 72.0 | .604 |
| Austin Gomber* | LAA | mr | 27 | 23 | 0 | .000 | 0 | 8 | .348 | 89 | 3.9 | 16 | 6 | .375 | 86.2 | .599 |
| Tony Gonsolin | Mil | sp | 27 | 25 | 0 | .000 | 0 | 18 | .720 | 149 | 6.0 | 7 | 1 | .143 | 92.0 | .665 |
| Marco Gonzales* | Was | sp | 29 | 33 | 7 | .212 | 1 | 21 | .636 | 258 | 7.8 | 15 | 4 | .267 | 93.4 | .702 |
| Chi Chi Gonzalez | SF | sp | 29 | 14 | 0 | .000 | 0 | 8 | .571 | 61 | 4.4 | 2 | 0 | .000 | 95.0 | .587 |
| Gio Gonzalez* | NYM | mr | 35 | 23 | 0 | .000 | 0 | 3 | .130 | 95 | 4.1 | 16 | 8 | .500 | 78.9 | .599 |
| Victor Gonzalez* | LAD | mr | 25 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 7 | 3 | .429 | 25.3 | .729 |
| Nick Goody | Cin | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 5 | 0 | .000 | 25.8 | .524 |
| Trevor Gott | Tor | cl | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 1 | 0 | .000 | 17.8 | .592 |
| Ashton Goudeau | Hou | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 0 | 0 | .000 | 14.0 | .714 |
| Brusdar Graterol | Col | mr | 22 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 18 | 7 | .389 | 17.9 | .661 |
| Kendall Graveman | Mia | mr | 30 | 4 | 0 | .000 | 0 | 3 | .750 | 21 | 5.3 | 1 | 1 | 1.000 | 83.0 | .590 |
| Jon Gray | Hou | sp | 29 | 25 | 0 | .000 | 0 | 9 | .360 | 83 | 3.3 | 28 | 13 | .464 | 88.4 | .635 |
| Sonny Gray | Ari | sp | 31 | 33 | 0 | .000 | 0 | 15 | .455 | 159 | 4.8 | 26 | 10 | .385 | 101.5 | .582 |
| Chad Green | Oak | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 8 | 1 | .125 | 18.2 | .665 |
| Shane Greene | Was | mr | 32 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 5 | 0 | .000 | 22.2 | .637 |
| Zack Greinke | ChC | sp | 37 | 36 | 1 | .028 | 1 | 18 | .500 | 199 | 5.5 | 25 | 7 | .280 | 91.4 | .684 |
| Foster Griffin* | ChW | mr | 25 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 6 | 0 | .000 | 29.5 | .593 |
| Robert Gsellman | Was | sp | 27 | 11 | 0 | .000 | 0 | 1 | .091 | 66 | 6.0 | 13 | 1 | .077 | 79.5 | .574 |
| Junior Guerra | Hou | mr | 36 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 21 | 5 | .238 | 23.6 | .601 |
| Taylor Guilbeau* | Cin | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 7 | 1 | .143 | 26.5 | .588 |
| Josh Hader* | SD | cl | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 11 | 3 | .273 | 25.0 | .590 |
| Jesse Hahn | Bal | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 7 | 1 | .143 | 23.4 | .616 |
| David Hale | Mia | mr | 33 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 2 | 2 | 1.000 | 24.4 | .614 |
| Cole Hamels* | Hou | sp | 37 | 4 | 0 | .000 | 0 | 1 | .250 | 6 | 1.5 | 5 | 2 | .400 | 75.8 | .624 |
| Brad Hand* | Hou | cl | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 3 | 0 | .000 | 17.9 | .659 |
| J.A. Happ* | ChC | sp | 38 | 27 | 2 | .074 | 0 | 21 | .778 | 155 | 5.7 | 15 | 3 | .200 | 90.6 | .635 |
| Ryne Harper | KC | mr | 32 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 5 | 5 | 1.000 | 22.4 | .624 |
| Will Harris | Det | mr | 36 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 1 | 0 | .000 | 13.2 | .667 |
| Geoff Hartlieb | LAA | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 36 | 14 | .389 | 21.2 | .531 |
| Hunter Harvey | NYM | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 14 | 4 | .286 | 27.4 | .619 |
| Matt Harvey | StL | sp | 32 | 14 | 0 | .000 | 0 | 1 | .071 | 63 | 4.5 | 11 | 4 | .364 | 61.9 | .611 |
| Thomas Hatch | NYM | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 13 | 4 | .308 | 30.4 | .574 |
| Andrew Heaney* | StL | sp | 30 | 33 | 1 | .030 | 1 | 18 | .545 | 139 | 4.2 | 13 | 3 | .231 | 99.4 | .641 |
| Taylor Hearn* | Tex | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 12 | 3 | .250 | 28.5 | .583 |
| Ben Heller | Hou | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 23 | 11 | .478 | 23.1 | .578 |
| Ryan Helsley | Pit | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 8 | 2 | .250 | 24.0 | .572 |
| Heath Hembree | Cle | mr | 32 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 18 | 6 | .333 | 22.8 | .607 |
| Kyle Hendricks | Was | sp | 31 | 33 | 4 | .121 | 2 | 25 | .758 | 179 | 5.4 | 13 | 5 | .385 | 97.7 | .708 |
| Liam Hendriks | Bal | cl | 32 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 0 | 0 | .000 | 21.1 | .718 |
| Jimmy Herget | Bal | mr | 27 | 1 | 0 | .000 | 0 | 0 | .000 | 5 | 5.0 | 16 | 2 | .125 | 23.9 | .577 |
| Carlos Hernandez | SF | sp | 24 | 9 | 0 | .000 | 0 | 3 | .333 | 30 | 3.3 | 6 | 1 | .167 | 101.4 | .596 |
| Darwinzon Hernandez* | Atl | mr | 24 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 9 | 1 | .111 | 32.8 | .562 |
| Elieser Hernandez | Phi | sp | 26 | 21 | 1 | .048 | 0 | 7 | .333 | 93 | 4.4 | 13 | 4 | .308 | 90.1 | .659 |
| Jonathan Hernandez | Tex | mr | 24 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 19 | 3 | .158 | 23.1 | .657 |
| Codi Heuer | Was | mr | 24 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 0 | 0 | .000 | 17.9 | .621 |
| Cam Hill | KC | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 11 | 3 | .273 | 27.1 | .621 |
| Rich Hill* | Hou | sp | 41 | 25 | 0 | .000 | 0 | 13 | .520 | 71 | 2.8 | 14 | 3 | .214 | 92.4 | .605 |
| Tim Hill* | LAD | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 11 | 3 | .273 | 17.6 | .657 |
| Jeff Hoffman | TB | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 16 | 2 | .125 | 25.2 | .652 |
| Derek Holland* | Phi | mr | 34 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 5 | 0 | .000 | 25.1 | .651 |
| Greg Holland | Bal | mr | 35 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 22 | 7 | .318 | 21.9 | .646 |
| Clay Holmes | Hou | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 0 | 0 | .000 | 24.0 | .583 |
| Tanner Houck | Cle | sp | 25 | 9 | 0 | .000 | 0 | 4 | .444 | 27 | 3.0 | 9 | 5 | .556 | 92.1 | .544 |
| Adrian Houser | LAD | sp | 28 | 26 | 0 | .000 | 0 | 5 | .192 | 146 | 5.6 | 27 | 12 | .444 | 83.8 | .626 |
| Sam Howard* | KC | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 16 | 6 | .375 | 27.2 | .597 |
| Spencer Howard | NYM | sp | 24 | 19 | 0 | .000 | 0 | 4 | .211 | 77 | 4.1 | 19 | 5 | .263 | 87.7 | .602 |
| James Hoyt | ChW | mr | 34 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 20 | 4 | .200 | 16.9 | .609 |
| Dakota Hudson | Bos | sp | 26 | 25 | 1 | .040 | 0 | 8 | .320 | 118 | 4.7 | 14 | 2 | .143 | 87.2 | .615 |
| Daniel Hudson | SF | cl | 34 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 0 | 0 | .000 | 17.9 | .580 |
| Jared Hughes | Ari | mr | 35 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 22 | 9 | .409 | 29.0 | .575 |
| Tommy Hunter | Bal | mr | 34 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 14 | 3 | .214 | 22.3 | .606 |
| Raisel Iglesias | Was | cl | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 6 | 1 | .167 | 17.5 | .684 |
| Luke Jackson | Pit | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 23 | 2 | .087 | 29.0 | .597 |
| Josh James | SD | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 8 | 3 | .375 | 27.1 | .511 |
| Kenley Jansen | NYY | cl | 33 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 5 | 2 | .400 | 25.0 | .599 |
| Cristian Javier | Bos | sp | 24 | 30 | 1 | .033 | 1 | 12 | .400 | 175 | 5.8 | 13 | 2 | .154 | 80.0 | .611 |
| Jeremy Jeffress | Mil | cl | 33 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 6 | 1 | .167 | 20.8 | .608 |
| Joe Jimenez | StL | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 18 | 6 | .333 | 26.6 | .638 |
| Pierce Johnson | KC | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 12 | 4 | .333 | 27.2 | .586 |
| Nate Jones | NYM | mr | 35 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 19 | 6 | .316 | 22.9 | .650 |
| Jakob Junis | SF | sp | 28 | 19 | 0 | .000 | 0 | 6 | .316 | 104 | 5.5 | 16 | 10 | .625 | 72.7 | .638 |
| Rob Kaminsky* | Bos | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 8 | 3 | .375 | 12.9 | .592 |
| James Kaprielian | Ari | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 0 | 0 | .000 | 31.0 | .667 |
| James Karinchak | SD | mr | 25 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 19 | 4 | .211 | 26.8 | .581 |
| Anthony Kay* | Det | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 7 | 2 | .286 | 35.1 | .605 |
| Brad Keller | Cle | sp | 25 | 18 | 3 | .167 | 1 | 15 | .833 | 67 | 3.7 | 6 | 4 | .667 | 105.5 | .629 |
| Brad Keller | Sea | sp | 25 | 9 | 2 | .222 | 2 | 9 | 1.000 | 52 | 5.8 | 1 | 0 | .000 | 93.0 | .662 |
| Brad Keller |   | sp | 25 | 27 | 5 | .185 | 3 | 24 | .889 | 119 | 4.4 | 7 | 4 | .571 | 101.3 | .639 |
| Mitch Keller | ChW | sp | 25 | 17 | 0 | .000 | 0 | 4 | .235 | 73 | 4.3 | 14 | 2 | .143 | 88.6 | .524 |
| Joe Kelly | ChC | mr | 33 | 5 | 0 | .000 | 0 | 0 | .000 | 24 | 4.8 | 14 | 9 | .643 | 33.6 | .500 |
| Merrill Kelly | Was | sp | 32 | 17 | 1 | .059 | 0 | 14 | .824 | 95 | 5.6 | 3 | 1 | .333 | 96.9 | .694 |
| Ian Kennedy | Min | mr | 36 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 7 | 2 | .286 | 29.3 | .638 |
| Clayton Kershaw* | Mil | sp | 33 | 30 | 1 | .033 | 1 | 22 | .733 | 153 | 5.1 | 10 | 2 | .200 | 88.9 | .693 |
| Dallas Keuchel* | ChC | sp | 33 | 33 | 5 | .152 | 1 | 19 | .576 | 191 | 5.8 | 15 | 3 | .200 | 99.6 | .634 |
| Mike Kickham* | Hou | mr | 32 | 2 | 0 | .000 | 0 | 0 | .000 | 8 | 4.0 | 1 | 0 | .000 | 48.3 | .683 |
| Yusei Kikuchi* | Cin | sp | 30 | 22 | 1 | .045 | 1 | 9 | .409 | 128 | 5.8 | 19 | 11 | .579 | 90.3 | .610 |
| Franklyn Kilome | SD | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 2 | 2 | 1.000 | 35.9 | .592 |
| Kwang Hyun Kim* | Bos | sp | 32 | 23 | 3 | .130 | 1 | 16 | .696 | 100 | 4.3 | 10 | 5 | .500 | 86.9 | .645 |
| Craig Kimbrel | NYM | mr | 33 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 20 | 12 | .600 | 27.8 | .568 |
| John King* | NYM | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 8 | 4 | .500 | 29.4 | .623 |
| Michael King | ChC | mr | 26 | 15 | 0 | .000 | 0 | 4 | .267 | 89 | 5.9 | 13 | 3 | .231 | 81.5 | .624 |
| Tyler Kinley | Col | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 15 | 1 | .067 | 22.4 | .563 |
| Brandon Kintzler | Tor | cl | 36 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 28 | 13 | .464 | 24.2 | .612 |
| Andrew Kittredge | Det | mr | 31 | 3 | 0 | .000 | 0 | 0 | .000 | 10 | 3.3 | 12 | 3 | .250 | 21.0 | .599 |
| Branden Kline | Cin | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 2 | 1 | .500 | 26.9 | .596 |
| Corey Kluber | Mia | sp | 35 | 2 | 0 | .000 | 0 | 1 | .500 | 11 | 5.5 | 2 | 0 | .000 | 89.0 | .640 |
| Adam Kolarek* | Bos | mr | 32 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 24 | 6 | .250 | 16.0 | .658 |
| Dean Kremer | Min | sp | 25 | 14 | 0 | .000 | 0 | 4 | .286 | 47 | 3.4 | 10 | 4 | .400 | 97.2 | .564 |
| Chad Kuhl | Oak | sp | 28 | 4 | 0 | .000 | 0 | 0 | .000 | 16 | 4.0 | 31 | 15 | .484 | 37.9 | .575 |
| Brady Lail | Cin | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 2 | 0 | .000 | 34.6 | .596 |
| Travis Lakins | Tex | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 16 | 5 | .313 | 21.7 | .574 |
| Jimmy Lambert | TB | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 9 | 4 | .444 | 23.4 | .551 |
| Dinelson Lamet | KC | sp | 28 | 32 | 0 | .000 | 0 | 22 | .688 | 90 | 2.8 | 9 | 1 | .111 | 95.0 | .645 |
| Wade LeBlanc* | Atl | sp | 36 | 8 | 0 | .000 | 0 | 4 | .500 | 25 | 3.1 | 5 | 2 | .400 | 78.9 | .632 |
| Jose Leclerc | Pit | cl | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 2 | 0 | .000 | 14.4 | .569 |
| Brandon Leibrandt* | Min | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 17 | 3 | .176 | 39.0 | .526 |
| Jon Lester* | Det | sp | 37 | 33 | 2 | .061 | 0 | 19 | .576 | 173 | 5.2 | 23 | 3 | .130 | 89.4 | .632 |
| Josh Lindblom | KC | sp | 34 | 24 | 3 | .125 | 0 | 10 | .417 | 118 | 4.9 | 18 | 9 | .500 | 98.0 | .595 |
| Jonathan Loaisiga | Tor | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 2 | 0 | .000 | 25.1 | .667 |
| Walker Lockett | Cle | mr | 27 | 1 | 0 | .000 | 0 | 1 | 1.000 | 4 | 4.0 | 17 | 5 | .294 | 37.7 | .626 |
| Jorge Lopez | Bal | sp | 28 | 12 | 0 | .000 | 0 | 6 | .500 | 83 | 6.9 | 4 | 3 | .750 | 80.2 | .652 |
| Pablo Lopez | LAD | sp | 25 | 34 | 0 | .000 | 0 | 23 | .676 | 145 | 4.3 | 23 | 6 | .261 | 102.1 | .621 |
| Reynaldo Lopez | TB | sp | 27 | 25 | 0 | .000 | 0 | 0 | .000 | 79 | 3.2 | 22 | 8 | .364 | 63.5 | .603 |
| Yoan Lopez | Ari | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 25 | 10 | .400 | 25.6 | .602 |
| Michael Lorenzen | Tor | mr | 29 | 17 | 0 | .000 | 0 | 2 | .118 | 76 | 4.5 | 10 | 3 | .300 | 78.3 | .615 |
| Aaron Loup* | Det | mr | 33 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 24 | 3 | .125 | 16.6 | .672 |
| Joey Lucchesi* | Phi | sp | 28 | 6 | 0 | .000 | 0 | 1 | .167 | 24 | 4.0 | 4 | 3 | .750 | 73.8 | .614 |
| Seth Lugo | Cin | cl | 31 | 3 | 0 | .000 | 0 | 0 | .000 | 13 | 4.3 | 21 | 4 | .190 | 27.2 | .653 |
| Jesus Luzardo* | NYM | sp | 23 | 30 | 1 | .033 | 0 | 17 | .567 | 65 | 2.2 | 11 | 5 | .455 | 88.7 | .660 |
| Jordan Lyles | Cin | sp | 30 | 26 | 0 | .000 | 0 | 10 | .385 | 203 | 7.8 | 17 | 9 | .529 | 90.5 | .607 |
| Lance Lynn | NYY | sp | 34 | 36 | 5 | .139 | 2 | 22 | .611 | 157 | 4.4 | 18 | 5 | .278 | 105.1 | .634 |
| Kenta Maeda | Ari | sp | 33 | 32 | 3 | .094 | 0 | 23 | .719 | 91 | 2.8 | 17 | 6 | .353 | 103.8 | .673 |
| Matt Magill | Hou | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 11 | 4 | .364 | 27.1 | .551 |
| Tyler Mahle | Min | sp | 26 | 27 | 0 | .000 | 0 | 10 | .370 | 124 | 4.6 | 15 | 7 | .467 | 89.5 | .597 |
| Sean Manaea* | Phi | sp | 29 | 33 | 4 | .121 | 0 | 19 | .576 | 147 | 4.5 | 16 | 6 | .375 | 95.2 | .700 |
| Nick Margevicius* | Sea | sp | 25 | 1 | 0 | .000 | 0 | 0 | .000 | 8 | 8.0 | 25 | 4 | .160 | 44.6 | .658 |
| Brailyn Marquez* | Ari | mr | 22 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 3 | 0 | .000 | 77.5 | .432 |
| German Marquez | Det | sp | 26 | 36 | 7 | .194 | 3 | 26 | .722 | 169 | 4.7 | 25 | 10 | .400 | 102.4 | .629 |
| Evan Marshall | LAD | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 17 | 1 | .059 | 22.3 | .619 |
| Brett Martin* | Atl | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 15 | 6 | .400 | 19.9 | .560 |
| Chris Martin | Bos | mr | 35 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 3 | 0 | .000 | 17.3 | .754 |
| Chris Martin | Cle | mr | 35 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 2 | 0 | .000 | 16.7 | .707 |
| Chris Martin |   | mr | 35 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 5 | 0 | .000 | 17.0 | .732 |
| Carlos Martinez | Det | sp | 29 | 1 | 0 | .000 | 0 | 0 | .000 | 8 | 8.0 | 0 | 0 | .000 | 25.0 | .760 |
| Phil Maton | LAD | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 26 | 6 | .231 | 22.2 | .658 |
| Tyler Matzek* | Hou | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 19 | 5 | .263 | 26.4 | .626 |
| Dustin May | NYY | sp | 23 | 28 | 1 | .036 | 1 | 14 | .500 | 133 | 4.8 | 9 | 5 | .556 | 88.1 | .634 |
| Trevor May | ChC | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 23 | 3 | .130 | 26.6 | .635 |
| Mike Mayers | Atl | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 13 | 4 | .308 | 20.7 | .648 |
| Chris Mazza | Atl | sp | 31 | 8 | 1 | .125 | 0 | 1 | .125 | 32 | 4.0 | 10 | 5 | .500 | 60.0 | .594 |
| Lance McCullers | Pit | sp | 27 | 32 | 0 | .000 | 0 | 13 | .406 | 145 | 4.5 | 18 | 3 | .167 | 96.5 | .594 |
| Jake McGee* | KC | mr | 34 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 3 | 2 | .667 | 23.7 | .677 |
| Kyle McGowin | Cle | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 15 | 5 | .333 | 25.0 | .614 |
| Triston McKenzie | Tex | sp | 23 | 15 | 0 | .000 | 0 | 7 | .467 | 55 | 3.7 | 9 | 4 | .444 | 87.3 | .648 |
| John Means* | Col | sp | 28 | 25 | 0 | .000 | 0 | 7 | .280 | 160 | 6.4 | 8 | 3 | .375 | 79.0 | .664 |
| Nick Mears | LAA | mr | 24 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 1 | 1 | 1.000 | 32.0 | .578 |
| Adonis Medina | Bos | sp | 24 | 4 | 0 | .000 | 0 | 1 | .250 | 30 | 7.5 | 5 | 1 | .200 | 58.5 | .564 |
| Humberto Mejia | Col | sp | 24 | 10 | 0 | .000 | 0 | 0 | .000 | 79 | 7.9 | 6 | 2 | .333 | 69.0 | .565 |
| Mark Melancon | Bos | cl | 36 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 11 | 0 | .000 | 16.7 | .655 |
| Keury Mella | TB | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 18 | 4 | .222 | 22.4 | .654 |
| Conner Menez* | StL | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 1 | 1 | 1.000 | 25.3 | .554 |
| Daniel Mengden | NYM | mr | 28 | 34 | 0 | .000 | 0 | 9 | .265 | 106 | 3.1 | 31 | 14 | .452 | 87.5 | .595 |
| Julian Merryweather | Bos | mr | 29 | 8 | 0 | .000 | 0 | 0 | .000 | 61 | 7.6 | 7 | 2 | .286 | 32.7 | .600 |
| Keynan Middleton | Atl | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 5 | 1 | .200 | 30.3 | .579 |
| Wade Miley* | Tor | sp | 34 | 14 | 0 | .000 | 0 | 3 | .214 | 65 | 4.6 | 15 | 5 | .333 | 67.3 | .575 |
| Andrew Miller* | Mil | mr | 36 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 14 | 7 | .500 | 17.8 | .622 |
| Tyson Miller | TB | sp | 25 | 3 | 0 | .000 | 0 | 1 | .333 | 10 | 3.3 | 4 | 1 | .250 | 79.3 | .592 |
| Alec Mills | Bal | sp | 29 | 33 | 1 | .030 | 0 | 12 | .364 | 215 | 6.5 | 32 | 5 | .156 | 85.0 | .625 |
| Hoby Milner* | KC | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 5 | 2 | .400 | 27.1 | .587 |
| Tommy Milone* | Atl | sp | 34 | 25 | 1 | .040 | 1 | 11 | .440 | 119 | 4.8 | 13 | 8 | .615 | 79.7 | .677 |
| Mike Minor* | Sea | sp | 33 | 33 | 0 | .000 | 0 | 14 | .424 | 156 | 4.7 | 29 | 7 | .241 | 90.3 | .629 |
| A.J. Minter* | NYY | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 3 | 0 | .000 | 21.6 | .630 |
| Anthony Misiewicz* | ChW | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 19 | 4 | .211 | 17.5 | .653 |
| Casey Mize | Pit | sp | 24 | 18 | 0 | .000 | 0 | 5 | .278 | 89 | 4.9 | 10 | 3 | .300 | 82.9 | .599 |
| Frankie Montas | ChC | sp | 28 | 33 | 0 | .000 | 0 | 9 | .273 | 183 | 5.5 | 35 | 13 | .371 | 90.7 | .608 |
| Rafael Montero | Mia | cl | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 12 | 4 | .333 | 19.2 | .618 |
| Jordan Montgomery* | Pit | sp | 28 | 24 | 0 | .000 | 0 | 12 | .500 | 106 | 4.4 | 11 | 2 | .182 | 91.2 | .659 |
| Mike Montgomery* | ChW | mr | 31 | 3 | 0 | .000 | 0 | 1 | .333 | 12 | 4.0 | 2 | 0 | .000 | 45.8 | .579 |
| Adrian Morejon* | SD | mr | 22 | 1 | 0 | .000 | 0 | 0 | .000 | 2 | 2.0 | 7 | 2 | .286 | 26.1 | .650 |
| Adam Morgan* | LAA | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 14 | 4 | .286 | 14.3 | .622 |
| Mike Morin | Det | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 4 | 3 | .750 | 29.0 | .569 |
| Charlie Morton | Mil | sp | 37 | 27 | 0 | .000 | 0 | 5 | .185 | 176 | 6.5 | 22 | 11 | .500 | 81.6 | .632 |
| Patrick Murphy | Atl | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 0 | 0 | .000 | 21.0 | .571 |
| Joe Musgrove | Min | sp | 28 | 23 | 1 | .043 | 0 | 3 | .130 | 102 | 4.4 | 17 | 5 | .294 | 93.0 | .628 |
| Nick Nelson | Bal | mr | 25 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 4 | 0 | .000 | 35.3 | .615 |
| Hector Neris | LAA | mr | 32 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 22 | 8 | .364 | 22.1 | .638 |
| Dovydas Neverauskas | Tor | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 12 | 5 | .417 | 23.6 | .593 |
| Jake Newberry | Mia | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 4 | 1 | .250 | 15.0 | .616 |
| Sean Newcomb* | Tor | sp | 28 | 32 | 0 | .000 | 0 | 3 | .094 | 140 | 4.4 | 36 | 14 | .389 | 67.0 | .605 |
| Ljay Newsome | StL | sp | 24 | 12 | 1 | .083 | 0 | 1 | .083 | 51 | 4.3 | 10 | 4 | .400 | 72.5 | .712 |
| Juan Nicasio | Phi | mr | 34 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 1 | 0 | .000 | 37.5 | .627 |
| Aaron Nola | Min | sp | 28 | 33 | 1 | .030 | 1 | 26 | .788 | 122 | 3.7 | 14 | 4 | .286 | 104.8 | .645 |
| Daniel Norris* | Tor | mr | 28 | 1 | 0 | .000 | 0 | 0 | .000 | 12 | 12.0 | 10 | 0 | .000 | 30.0 | .656 |
| Ivan Nova | KC | sp | 34 | 1 | 0 | .000 | 0 | 0 | .000 | 10 | 10.0 | 1 | 1 | 1.000 | 114.0 | .649 |
| Darren O'Day | Sea | mr | 38 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 14 | 3 | .214 | 18.0 | .615 |
| Jake Odorizzi | ChW | sp | 31 | 9 | 0 | .000 | 0 | 0 | .000 | 46 | 5.1 | 11 | 5 | .455 | 71.1 | .617 |
| Shohei Ohtani | Ari | dh | 26 | 3 | 0 | .000 | 0 | 0 | .000 | 18 | 6.0 | 4 | 3 | .750 | 84.0 | .464 |
| Josh Osich* | Pit | mr | 32 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 12 | 7 | .583 | 24.1 | .618 |
| Roberto Osuna | Tor | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 5 | 3 | .600 | 24.1 | .627 |
| Corey Oswalt | Cle | mr | 27 | 4 | 1 | .250 | 0 | 0 | .000 | 14 | 3.5 | 8 | 1 | .125 | 46.4 | .667 |
| Adam Ottavino | Ari | mr | 35 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 31 | 14 | .452 | 22.8 | .563 |
| Johan Oviedo | StL | sp | 23 | 15 | 0 | .000 | 0 | 4 | .267 | 58 | 3.9 | 18 | 6 | .333 | 81.2 | .606 |
| Chris Paddack | Mia | sp | 25 | 24 | 0 | .000 | 0 | 14 | .583 | 128 | 5.3 | 9 | 3 | .333 | 86.0 | .658 |
| Emilio Pagan | StL | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 14 | 4 | .286 | 20.4 | .617 |
| Enoli Paredes | TB | mr | 25 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 35 | 15 | .429 | 25.0 | .553 |
| Blake Parker | Det | mr | 36 | 2 | 0 | .000 | 0 | 0 | .000 | 10 | 5.0 | 10 | 1 | .100 | 21.3 | .603 |
| Luis Patino | NYM | mr | 21 | 2 | 0 | .000 | 0 | 0 | .000 | 10 | 5.0 | 2 | 1 | .500 | 51.6 | .562 |
| James Paxton* | StL | sp | 32 | 20 | 0 | .000 | 0 | 5 | .250 | 69 | 3.5 | 23 | 8 | .348 | 84.7 | .644 |
| Joel Payamps | Mia | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 3 | 1 | .333 | 18.0 | .611 |
| Nate Pearson | NYM | sp | 24 | 12 | 0 | .000 | 0 | 3 | .250 | 47 | 3.9 | 10 | 1 | .100 | 57.3 | .544 |
| Felix Pena | SF | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 20 | 10 | .500 | 26.1 | .624 |
| Freddy Peralta | ChW | mr | 25 | 4 | 0 | .000 | 0 | 1 | .250 | 25 | 6.3 | 13 | 4 | .308 | 39.4 | .612 |
| Wandy Peralta* | Tex | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 31 | 10 | .323 | 25.1 | .620 |
| Luis Perdomo | Tor | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 12 | 5 | .417 | 34.6 | .580 |
| Cionel Perez* | Cle | mr | 25 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 9 | 2 | .222 | 19.9 | .589 |
| Martin Perez* | SD | sp | 30 | 33 | 1 | .030 | 0 | 15 | .455 | 160 | 4.8 | 26 | 9 | .346 | 91.8 | .606 |
| Oliver Perez* | Oak | mr | 39 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 15 | 4 | .267 | 12.0 | .631 |
| David Peterson* | SF | sp | 25 | 27 | 0 | .000 | 0 | 17 | .630 | 79 | 2.9 | 18 | 9 | .500 | 98.0 | .617 |
| Yusmeiro Petit | Bos | mr | 36 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 17 | 4 | .235 | 12.8 | .637 |
| David Phelps | Pit | mr | 34 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 8 | 1 | .125 | 26.2 | .647 |
| Evan Phillips | NYM | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 5 | 3 | .600 | 24.1 | .559 |
| Michael Pineda | LAA | sp | 32 | 17 | 0 | .000 | 0 | 7 | .412 | 75 | 4.4 | 9 | 5 | .556 | 83.8 | .637 |
| Nick Pivetta | Atl | mr | 28 | 2 | 0 | .000 | 0 | 1 | .500 | 6 | 3.0 | 7 | 4 | .571 | 32.5 | .609 |
| Zach Plesac | Cin | sp | 26 | 26 | 8 | .308 | 2 | 16 | .615 | 151 | 5.8 | 19 | 5 | .263 | 104.1 | .683 |
| Adam Plutko | Bos | mr | 29 | 19 | 0 | .000 | 0 | 3 | .158 | 121 | 6.4 | 9 | 1 | .111 | 61.6 | .637 |
| Drew Pomeranz* | NYY | mr | 32 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 14 | 6 | .429 | 24.0 | .577 |
| Cody Ponce | NYY | sp | 27 | 4 | 1 | .250 | 1 | 2 | .500 | 19 | 4.8 | 2 | 2 | 1.000 | 82.5 | .645 |
| Daniel Ponce de Leon | Hou | sp | 29 | 22 | 0 | .000 | 0 | 1 | .045 | 86 | 3.9 | 10 | 4 | .400 | 81.2 | .581 |
| Sean Poppen | Cin | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 0 | 0 | .000 | 21.0 | .589 |
| Rick Porcello | LAD | sp | 32 | 32 | 0 | .000 | 0 | 9 | .281 | 145 | 4.5 | 32 | 15 | .469 | 88.3 | .646 |
| Ryan Pressly | Mil | cl | 32 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 17 | 5 | .294 | 21.0 | .645 |
| Cal Quantrill | ChW | mr | 26 | 1 | 0 | .000 | 0 | 0 | .000 | 1 | 1.0 | 21 | 6 | .286 | 26.6 | .640 |
| Jose Quintana* | Mia | mr | 32 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 6 | 0 | .000 | 31.3 | .614 |
| Tanner Rainey | StL | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 2 | 0 | .000 | 17.9 | .657 |
| Brooks Raley* | Pit | mr | 33 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 9 | 6 | .667 | 21.7 | .617 |
| Erasmo Ramirez | Bos | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 16 | 7 | .438 | 56.3 | .655 |
| Nick Ramirez* | Cin | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 7 | 2 | .286 | 28.9 | .636 |
| Noe Ramirez | Mia | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 17 | 6 | .353 | 25.8 | .627 |
| Yohan Ramirez | KC | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 15 | 6 | .400 | 32.3 | .538 |
| Drew Rasmussen | NYM | mr | 25 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 18 | 8 | .444 | 32.6 | .589 |
| Robbie Ray* | StL | sp | 29 | 33 | 0 | .000 | 0 | 7 | .212 | 133 | 4.0 | 29 | 11 | .379 | 92.8 | .566 |
| Colin Rea | Sea | mr | 30 | 4 | 1 | .250 | 1 | 1 | .250 | 21 | 5.3 | 7 | 0 | .000 | 44.5 | .690 |
| Cody Reed* | ChC | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 10 | 1 | .100 | 35.7 | .535 |
| Sean Reid-Foley | Min | mr | 25 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 4 | 3 | .750 | 24.3 | .560 |
| Alex Reyes | ChW | mr | 26 | 1 | 0 | .000 | 0 | 0 | .000 | 11 | 11.0 | 12 | 5 | .417 | 27.8 | .559 |
| Garrett Richards | Mil | sp | 33 | 30 | 0 | .000 | 0 | 17 | .567 | 174 | 5.8 | 15 | 1 | .067 | 87.7 | .625 |
| Trevor Richards | KC | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 0 | 0 | .000 | 35.5 | .582 |
| Tanner Roark | Tor | sp | 34 | 32 | 0 | .000 | 0 | 5 | .156 | 136 | 4.3 | 19 | 10 | .526 | 78.3 | .596 |
| Hansel Robles | SD | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 36 | 13 | .361 | 21.9 | .584 |
| Carlos Rodon* | SF | sp | 28 | 5 | 0 | .000 | 0 | 1 | .200 | 28 | 5.6 | 3 | 0 | .000 | 97.8 | .566 |
| Joely Rodriguez* | Bal | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 14 | 6 | .429 | 23.5 | .625 |
| Richard Rodriguez | Sea | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 19 | 7 | .368 | 20.1 | .645 |
| Chaz Roe | Cle | mr | 34 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 14 | 8 | .571 | 21.2 | .582 |
| Taylor Rogers* | Mia | cl | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 7 | 1 | .143 | 14.6 | .643 |
| Trevor Rogers* | KC | sp | 23 | 19 | 0 | .000 | 0 | 4 | .211 | 83 | 4.4 | 11 | 5 | .455 | 95.9 | .598 |
| Tyler Rogers | Cin | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 20 | 8 | .400 | 22.5 | .639 |
| Jordan Romano | ChC | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 2 | 0 | .000 | 20.9 | .628 |
| Sal Romano | Oak | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 2 | 2 | 1.000 | 22.0 | .591 |
| Sergio Romo | Col | mr | 38 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 27 | 5 | .185 | 20.1 | .612 |
| Hector Rondon | Tor | mr | 33 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 17 | 3 | .176 | 24.4 | .614 |
| Trevor Rosenthal | ChC | cl | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 3 | 1 | .333 | 18.4 | .626 |
| Ramon Rosso | KC | mr | 25 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 2 | 0 | .000 | 44.7 | .567 |
| Jose Ruiz | Tex | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 13 | 6 | .462 | 24.9 | .556 |
| Kyle Ryan* | SF | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 2 | 0 | .000 | 26.0 | .639 |
| Hyun Jin Ryu* | Ari | sp | 34 | 32 | 3 | .094 | 2 | 21 | .656 | 127 | 4.0 | 18 | 9 | .500 | 101.4 | .659 |
| Casey Sadler | SF | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 3 | 0 | .000 | 23.9 | .582 |
| Jeff Samardzija | Pit | sp | 36 | 9 | 0 | .000 | 0 | 1 | .111 | 25 | 2.8 | 3 | 2 | .667 | 83.9 | .675 |
| Anibal Sanchez | Tex | sp | 37 | 28 | 0 | .000 | 0 | 6 | .214 | 102 | 3.6 | 21 | 6 | .286 | 86.7 | .616 |
| Sixto Sanchez | Cle | sp | 22 | 22 | 2 | .091 | 0 | 12 | .545 | 76 | 3.5 | 13 | 5 | .385 | 93.5 | .637 |
| Patrick Sandoval* | Pit | sp | 24 | 10 | 0 | .000 | 0 | 6 | .600 | 40 | 4.0 | 2 | 0 | .000 | 82.6 | .649 |
| Dennis Santana | Hou | mr | 25 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 9 | 3 | .333 | 26.3 | .598 |
| Max Scherzer | Oak | sp | 36 | 33 | 0 | .000 | 0 | 15 | .455 | 139 | 4.2 | 23 | 8 | .348 | 98.6 | .629 |
| Clarke Schmidt | Phi | mr | 25 | 9 | 0 | .000 | 0 | 1 | .111 | 29 | 3.2 | 13 | 4 | .308 | 92.2 | .531 |
| John Schreiber | Pit | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 14 | 5 | .357 | 22.5 | .646 |
| Tanner Scott* | ChC | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 4 | 0 | .000 | 19.2 | .638 |
| Andre Scrubb | Was | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 6 | 1 | .167 | 21.6 | .512 |
| Sam Selman* | StL | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 17 | 2 | .118 | 21.4 | .594 |
| Antonio Senzatela | Pit | sp | 26 | 32 | 6 | .188 | 2 | 19 | .594 | 132 | 4.1 | 14 | 5 | .357 | 103.3 | .663 |
| Justus Sheffield* | Phi | sp | 25 | 33 | 3 | .091 | 2 | 17 | .515 | 113 | 3.4 | 26 | 11 | .423 | 101.2 | .620 |
| Ryan Sherriff* | ChW | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 13 | 3 | .231 | 18.7 | .628 |
| Matt Shoemaker | Cle | sp | 34 | 10 | 1 | .100 | 0 | 6 | .600 | 27 | 2.7 | 4 | 1 | .250 | 96.0 | .629 |
| Matt Shoemaker | Sea | sp | 34 | 9 | 1 | .111 | 1 | 4 | .444 | 43 | 4.8 | 8 | 2 | .250 | 93.0 | .624 |
| Matt Shoemaker |   | sp | 34 | 19 | 2 | .105 | 1 | 10 | .526 | 70 | 3.7 | 12 | 3 | .250 | 94.6 | .627 |
| Chasen Shreve* | Bos | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 9 | 1 | .111 | 27.5 | .608 |
| Lucas Sims | Det | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 7 | 4 | .571 | 19.5 | .588 |
| Brady Singer | KC | sp | 24 | 32 | 0 | .000 | 0 | 15 | .469 | 149 | 4.7 | 10 | 3 | .300 | 92.2 | .608 |
| Tarik Skubal* | Sea | sp | 24 | 23 | 1 | .043 | 0 | 3 | .130 | 130 | 5.7 | 12 | 3 | .250 | 73.9 | .631 |
| Aaron Slegers | Mil | mr | 28 | 3 | 1 | .333 | 1 | 3 | 1.000 | 16 | 5.3 | 13 | 2 | .154 | 34.8 | .678 |
| Devin Smeltzer* | TB | mr | 25 | 30 | 0 | .000 | 0 | 5 | .167 | 93 | 3.1 | 30 | 14 | .467 | 71.8 | .624 |
| Burch Smith | Sea | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 9 | 1 | .111 | 39.1 | .704 |
| Caleb Smith* | Mil | sp | 29 | 14 | 0 | .000 | 0 | 3 | .214 | 63 | 4.5 | 7 | 0 | .000 | 83.6 | .568 |
| Drew Smith | Phi | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 4 | 2 | .500 | 21.3 | .607 |
| Josh A. Smith | Col | mr | 33 | 1 | 0 | .000 | 0 | 0 | .000 | 10 | 10.0 | 13 | 10 | .769 | 30.4 | .636 |
| Riley Smith | Det | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 9 | 3 | .333 | 46.2 | .629 |
| Will Smith* | Min | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 12 | 6 | .500 | 17.3 | .635 |
| Drew Smyly* | Hou | sp | 32 | 17 | 0 | .000 | 0 | 9 | .529 | 55 | 3.2 | 13 | 2 | .154 | 98.0 | .639 |
| Cy Sneed | KC | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 30 | 15 | .500 | 29.9 | .608 |
| Blake Snell* | LAD | sp | 28 | 31 | 2 | .065 | 0 | 11 | .355 | 140 | 4.5 | 11 | 2 | .182 | 89.4 | .655 |
| Chad Sobotka | Hou | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 2 | 0 | .000 | 33.0 | .561 |
| Joakim Soria | StL | mr | 37 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 6 | 2 | .333 | 20.7 | .651 |
| Mike Soroka | TB | sp | 23 | 9 | 0 | .000 | 0 | 3 | .333 | 20 | 2.2 | 6 | 6 | 1.000 | 92.0 | .565 |
| Gregory Soto* | StL | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 27 | 7 | .259 | 24.2 | .593 |
| Glenn Sparkman | Hou | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 5 | 1 | .200 | 28.2 | .716 |
| Jeffrey Springs* | TB | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 21 | 7 | .333 | 31.5 | .650 |
| Craig Stammen | Hou | mr | 37 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 31 | 8 | .258 | 23.2 | .654 |
| Cody Stashak | Cin | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 6 | 2 | .333 | 22.7 | .663 |
| Josh Staumont | TB | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 23 | 5 | .217 | 24.5 | .576 |
| Robert Stock | Cin | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 15 | 5 | .333 | 24.8 | .565 |
| Matt Strahm* | StL | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 14 | 1 | .071 | 26.3 | .641 |
| Stephen Strasburg | Cin | sp | 32 | 11 | 0 | .000 | 0 | 2 | .182 | 71 | 6.5 | 4 | 2 | .500 | 76.5 | .606 |
| Chris Stratton | StL | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 20 | 7 | .350 | 24.5 | .594 |
| Ross Stripling | Tex | sp | 31 | 25 | 0 | .000 | 0 | 4 | .160 | 83 | 3.3 | 33 | 16 | .485 | 81.1 | .605 |
| Pedro Strop | Col | mr | 36 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 6 | 5 | .833 | 21.1 | .532 |
| Andrew Suarez* | SF | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 8 | 3 | .375 | 26.4 | .562 |
| Jose Suarez* | Cle | sp | 23 | 6 | 0 | .000 | 0 | 1 | .167 | 26 | 4.3 | 8 | 3 | .375 | 73.2 | .547 |
| Ranger Suarez* | Cle | mr | 25 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 3 | 1 | .333 | 52.3 | .541 |
| Wander Suero | Tor | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 26 | 9 | .346 | 24.6 | .610 |
| Cole Sulser | Mil | cl | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 12 | 4 | .333 | 24.5 | .571 |
| Brent Suter* | LAD | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 17 | 8 | .471 | 31.0 | .692 |
| Masahiro Tanaka | ChW | sp | 32 | 30 | 0 | .000 | 0 | 15 | .500 | 151 | 5.0 | 27 | 7 | .259 | 91.8 | .660 |
| Stephen Tarpley* | Cin | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 2 | 1 | .500 | 21.0 | .610 |
| Dillon Tate | Pit | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 10 | 4 | .400 | 22.2 | .627 |
| Blake Taylor* | ChW | mr | 25 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 15 | 1 | .067 | 21.5 | .592 |
| Josh Taylor* | Atl | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 14 | 8 | .571 | 23.2 | .565 |
| Julio Teheran | Tex | sp | 30 | 25 | 0 | .000 | 0 | 2 | .080 | 98 | 3.9 | 14 | 2 | .143 | 81.2 | .581 |
| Ryan Tepera | Tor | mr | 33 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 27 | 6 | .222 | 21.1 | .599 |
| Caleb Thielbar* | Mia | mr | 34 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 17 | 6 | .353 | 22.0 | .591 |
| Ryan Thompson | Oak | mr | 29 | 3 | 0 | .000 | 0 | 0 | .000 | 10 | 3.3 | 11 | 3 | .273 | 19.9 | .612 |
| Trent Thornton | SF | sp | 27 | 8 | 0 | .000 | 0 | 0 | .000 | 23 | 2.9 | 4 | 0 | .000 | 87.9 | .582 |
| Lewis Thorpe* | Tex | mr | 25 | 25 | 0 | .000 | 0 | 4 | .160 | 117 | 4.7 | 27 | 6 | .222 | 79.4 | .577 |
| Jesus Tinoco | SF | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 0 | 0 | .000 | 24.5 | .511 |
| Josh Tomlin | Mia | mr | 36 | 27 | 0 | .000 | 0 | 17 | .630 | 141 | 5.2 | 19 | 5 | .263 | 84.4 | .686 |
| Justin Topa | NYY | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 1 | 1 | 1.000 | 21.0 | .651 |
| Touki Toussaint | LAA | sp | 25 | 18 | 0 | .000 | 0 | 0 | .000 | 87 | 4.8 | 14 | 2 | .143 | 38.3 | .592 |
| Blake Treinen | ChC | mr | 33 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 34 | 13 | .382 | 27.2 | .627 |
| Andrew Triggs | Mil | mr | 32 | 3 | 0 | .000 | 0 | 0 | .000 | 34 | 11.3 | 1 | 0 | .000 | 69.7 | .627 |
| Lou Trivino | Atl | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 4 | 3 | .750 | 28.2 | .608 |
| Nick Tropeano | LAA | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 11 | 5 | .455 | 64.9 | .627 |
| Nik Turley* | ChW | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 16 | 4 | .250 | 21.2 | .619 |
| Spencer Turnbull | Bal | sp | 28 | 33 | 0 | .000 | 0 | 15 | .455 | 173 | 5.2 | 23 | 11 | .478 | 89.9 | .594 |
| Duane Underwood | Atl | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 27 | 9 | .333 | 22.1 | .664 |
| Jose Urena | Min | sp | 29 | 17 | 0 | .000 | 0 | 5 | .294 | 81 | 4.8 | 17 | 8 | .471 | 93.6 | .595 |
| Julio Urias* | Bal | sp | 24 | 30 | 1 | .033 | 1 | 16 | .533 | 142 | 4.7 | 11 | 1 | .091 | 89.2 | .637 |
| Jose Urquidy | Sea | sp | 26 | 17 | 1 | .059 | 1 | 11 | .647 | 84 | 4.9 | 16 | 6 | .375 | 94.2 | .609 |
| Cesar Valdez | Oak | cl | 36 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 8 | 0 | .000 | 23.7 | .621 |
| Framber Valdez* | Mia | sp | 27 | 30 | 1 | .033 | 1 | 23 | .767 | 125 | 4.2 | 11 | 0 | .000 | 100.4 | .671 |
| Phillips Valdez | Mia | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 28 | 7 | .250 | 31.3 | .593 |
| Vince Velasquez | Tor | sp | 29 | 22 | 0 | .000 | 0 | 1 | .045 | 86 | 3.9 | 29 | 13 | .448 | 74.1 | .600 |
| Justin Verlander | Hou | sp | 38 | 4 | 0 | .000 | 0 | 0 | .000 | 15 | 3.8 | 3 | 3 | 1.000 | 66.5 | .602 |
| Nick Vincent | Phi | mr | 34 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 10 | 4 | .400 | 23.2 | .631 |
| Austin Voth | KC | sp | 29 | 29 | 5 | .172 | 0 | 11 | .379 | 141 | 4.9 | 13 | 3 | .231 | 95.1 | .609 |
| Jacob Waguespack | Tor | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 9 | 4 | .444 | 42.4 | .613 |
| Adam Wainwright | Col | sp | 39 | 27 | 2 | .074 | 0 | 13 | .481 | 136 | 5.0 | 22 | 5 | .227 | 103.7 | .637 |
| Taijuan Walker | Hou | sp | 28 | 33 | 1 | .030 | 0 | 20 | .606 | 112 | 3.4 | 16 | 2 | .125 | 93.7 | .631 |
| Tony Watson* | Sea | mr | 36 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 15 | 4 | .267 | 15.9 | .678 |
| Luke Weaver | ChW | sp | 27 | 16 | 0 | .000 | 0 | 2 | .125 | 90 | 5.6 | 13 | 5 | .385 | 83.8 | .610 |
| Jacob Webb | TB | mr | 27 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 15 | 1 | .067 | 22.5 | .621 |
| Logan Webb | Bos | sp | 24 | 33 | 0 | .000 | 0 | 6 | .182 | 189 | 5.7 | 19 | 5 | .263 | 83.5 | .597 |
| Tyler Webb* | NYY | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 22 | 1 | .045 | 21.3 | .601 |
| Ryan Weber | Cle | mr | 30 | 17 | 1 | .059 | 0 | 5 | .294 | 73 | 4.3 | 26 | 17 | .654 | 51.9 | .611 |
| Jordan Weems | Oak | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 6 | 1 | .167 | 26.5 | .562 |
| J.B. Wendelken | Was | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 5 | 1 | .200 | 20.8 | .632 |
| Zack Wheeler | SF | sp | 31 | 33 | 9 | .273 | 4 | 24 | .727 | 137 | 4.2 | 9 | 4 | .444 | 105.2 | .631 |
| Mitch White | Mil | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 3 | 0 | .000 | 17.4 | .655 |
| Kodi Whitley | Tex | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 12 | 2 | .167 | 20.9 | .594 |
| Rowan Wick | NYM | mr | 28 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 21 | 8 | .381 | 21.4 | .647 |
| Taylor Widener | LAD | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 10 | 2 | .200 | 42.0 | .586 |
| Brad Wieck* | Oak | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 0 | 0 | .000 | 18.2 | .615 |
| Devin Williams | NYY | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 0 | 0 | .000 | 17.5 | .648 |
| Taylor Williams | Det | cl | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 4 | 0 | .000 | 15.9 | .635 |
| Trevor Williams | LAD | sp | 29 | 5 | 0 | .000 | 0 | 1 | .200 | 26 | 5.2 | 5 | 1 | .200 | 89.8 | .608 |
| Bryse Wilson | Ari | mr | 23 | 5 | 0 | .000 | 0 | 2 | .400 | 10 | 2.0 | 12 | 5 | .417 | 81.9 | .576 |
| Justin Wilson* | Mil | mr | 33 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 21 | 7 | .333 | 20.6 | .605 |
| Dan Winkler | Tex | mr | 31 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 8 | 1 | .125 | 20.7 | .609 |
| Matt Wisler | Sea | mr | 28 | 11 | 0 | .000 | 0 | 0 | .000 | 62 | 5.6 | 30 | 5 | .167 | 34.2 | .590 |
| Nick Wittgren | Was | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 5 | 1 | .200 | 24.3 | .656 |
| Asher Wojciechowski | Ari | sp | 32 | 24 | 0 | .000 | 0 | 5 | .208 | 103 | 4.3 | 15 | 6 | .400 | 85.8 | .604 |
| Jake Woodford | Pit | mr | 24 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 1 | 0 | .000 | 27.6 | .662 |
| Brandon Woodruff | Cin | sp | 28 | 38 | 1 | .026 | 1 | 25 | .658 | 214 | 5.6 | 23 | 10 | .435 | 102.1 | .645 |
| Brandon Workman | Col | cl | 32 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 16 | 0 | .000 | 22.4 | .610 |
| Kyle Wright | TB | sp | 25 | 25 | 0 | .000 | 0 | 11 | .440 | 93 | 3.7 | 18 | 7 | .389 | 83.3 | .584 |
| Miguel Yajure | LAA | mr | 23 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 14 | 5 | .357 | 65.8 | .559 |
| Shun Yamaguchi | TB | mr | 33 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 25 | 14 | .560 | 33.6 | .567 |
| Ryan Yarbrough* | LAA | sp | 29 | 29 | 1 | .034 | 0 | 19 | .655 | 150 | 5.2 | 14 | 6 | .429 | 84.9 | .672 |
| Eric Yardley | Bos | mr | 30 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 17 | 9 | .529 | 17.2 | .612 |
| Huascar Ynoa | Bos | sp | 23 | 20 | 0 | .000 | 0 | 1 | .050 | 104 | 5.2 | 13 | 3 | .231 | 61.8 | .596 |
| Alex Young* | Atl | mr | 27 | 12 | 0 | .000 | 0 | 1 | .083 | 42 | 3.5 | 11 | 3 | .273 | 75.3 | .625 |
| T.J. Zeuch | Atl | mr | 25 | 2 | 0 | .000 | 0 | 0 | .000 | 3 | 1.5 | 4 | 3 | .750 | 46.3 | .626 |
| Kyle Zimmer | ChW | mr | 29 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 4 | 1 | .250 | 22.0 | .616 |
| Bruce Zimmermann* | StL | sp | 26 | 3 | 0 | .000 | 0 | 1 | .333 | 8 | 2.7 | 4 | 3 | .750 | 45.3 | .577 |
| Jordan Zimmermann | Cle | sp | 35 | 6 | 1 | .167 | 0 | 1 | .167 | 31 | 5.2 | 4 | 2 | .500 | 91.5 | .596 |
| Tyler Zuber | Atl | mr | 26 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 35 | 12 | .343 | 22.8 | .522 |
| Relief |
| Name | Team | P | Age | SVO | S | SV% | BS | BS% | HLD | IR | IRS | IR% | G | GR | GF | PCH/G | STR% |
| Bryan Abreu | Hou | mr | 24 | 0 | 0 | .000 | 0 | .000 | 0 | 1 | 1 | 1.000 | 2 | 2 | 2 | 25.0 | .560 |
| Jason Adam | Tor | mr | 29 | 0 | 0 | .000 | 0 | .000 | 13 | 15 | 6 | .400 | 35 | 35 | 6 | 21.7 | .616 |
| Austin Adams | LAA | mr | 30 | 0 | 0 | .000 | 0 | .000 | 1 | 0 | 0 | .000 | 2 | 2 | 1 | 22.0 | .477 |
| Keegan Akin* | Min | sp | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 21 | 0 | 0 | 85.0 | .609 |
| Jorge Alcala | Col | mr | 25 | 2 | 2 | 1.000 | 0 | .000 | 0 | 15 | 7 | .467 | 23 | 23 | 15 | 28.0 | .635 |
| Sandy Alcantara | SD | sp | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 18 | 0 | 0 | 96.7 | .614 |
| Scott Alexander* | LAD | mr | 31 | 3 | 2 | .667 | 1 | .333 | 1 | 26 | 12 | .462 | 30 | 30 | 13 | 20.7 | .550 |
| Tyler Alexander* | LAD | mr | 26 | 1 | 0 | .000 | 1 | 1.000 | 1 | 28 | 9 | .321 | 26 | 26 | 13 | 24.2 | .649 |
| Kolby Allard* | Min | sp | 23 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 27 | 0 | 0 | 81.0 | .583 |
| Yency Almonte | Mia | mr | 27 | 10 | 8 | .800 | 2 | .200 | 22 | 25 | 8 | .320 | 73 | 73 | 26 | 18.1 | .648 |
| Dan Altavilla | Tex | mr | 28 | 4 | 1 | .250 | 1 | .250 | 1 | 36 | 18 | .500 | 43 | 43 | 3 | 27.3 | .573 |
| Jose Alvarado* | Pit | mr | 26 | 2 | 1 | .500 | 1 | .500 | 3 | 6 | 4 | .667 | 12 | 12 | 3 | 20.3 | .611 |
| Jose Alvarez* | Cin | mr | 32 | 0 | 0 | .000 | 0 | .000 | 0 | 6 | 1 | .167 | 8 | 8 | 3 | 21.9 | .611 |
| Adbert Alzolay | ChC | sp | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 13 | 0 | 0 | 86.5 | .584 |
| Brett Anderson* | TB | sp | 33 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 30 | 0 | 0 | 79.8 | .676 |
| Chase Anderson | TB | sp | 33 | 1 | 0 | .000 | 1 | 1.000 | 3 | 61 | 30 | .492 | 58 | 57 | 16 | 34.8 | .644 |
| Ian Anderson | SF | sp | 23 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 19 | 0 | 0 | 107.3 | .623 |
| Nick Anderson | SD | cl | 30 | 30 | 27 | .900 | 3 | .100 | 3 | 18 | 3 | .167 | 57 | 57 | 44 | 21.4 | .666 |
| Shaun Anderson | SF | mr | 26 | 3 | 0 | .000 | 3 | 1.000 | 5 | 11 | 6 | .545 | 29 | 29 | 12 | 27.4 | .582 |
| Tyler Anderson* | Oak | sp | 31 | 1 | 0 | .000 | 1 | 1.000 | 0 | 3 | 0 | .000 | 29 | 5 | 1 | 75.0 | .617 |
| Matt Andriese | SF | mr | 31 | 14 | 8 | .571 | 6 | .429 | 0 | 18 | 2 | .111 | 45 | 42 | 33 | 30.4 | .621 |
| Tejay Antone | ChW | mr | 27 | 5 | 5 | 1.000 | 0 | .000 | 3 | 12 | 0 | .000 | 33 | 19 | 7 | 55.6 | .603 |
| Shawn Armstrong | Hou | mr | 30 | 2 | 1 | .500 | 1 | .500 | 4 | 11 | 2 | .182 | 21 | 21 | 9 | 18.1 | .630 |
| Shawn Armstrong | Mil | mr | 30 | 2 | 1 | .500 | 0 | .000 | 7 | 10 | 2 | .200 | 17 | 17 | 5 | 18.9 | .649 |
| Shawn Armstrong |   | mr | 30 | 4 | 2 | .500 | 1 | .250 | 11 | 21 | 4 | .190 | 38 | 38 | 14 | 18.5 | .639 |
| Jake Arrieta | KC | sp | 35 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 24 | 0 | 0 | 96.8 | .599 |
| Luis Avilan* | LAD | mr | 31 | 0 | 0 | .000 | 0 | .000 | 0 | 3 | 1 | .333 | 4 | 4 | 4 | 12.3 | .612 |
| Dakota Bacus | Cin | mr | 30 | 0 | 0 | .000 | 0 | .000 | 0 | 5 | 0 | .000 | 2 | 2 | 1 | 25.5 | .627 |
| Dakota Bacus | Cle | mr | 30 | 3 | 0 | .000 | 3 | 1.000 | 1 | 22 | 14 | .636 | 25 | 25 | 12 | 22.1 | .542 |
| Dakota Bacus |   | mr | 30 | 3 | 0 | .000 | 3 | 1.000 | 1 | 27 | 14 | .519 | 27 | 27 | 13 | 22.4 | .550 |
| Pedro Baez | Col | mr | 33 | 8 | 4 | .500 | 4 | .500 | 13 | 38 | 8 | .211 | 48 | 48 | 10 | 25.6 | .612 |
| Brandon Bailey | Min | mr | 26 | 0 | 0 | .000 | 0 | .000 | 5 | 13 | 4 | .308 | 17 | 17 | 4 | 22.7 | .575 |
| Homer Bailey | SF | sp | 35 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 5 | 0 | 0 | 102.8 | .553 |
| Caleb Baragar* | Det | mr | 27 | 8 | 5 | .625 | 3 | .375 | 14 | 45 | 11 | .244 | 58 | 58 | 20 | 20.2 | .646 |
| Daniel Bard | NYY | cl | 36 | 2 | 2 | 1.000 | 0 | .000 | 4 | 14 | 6 | .429 | 44 | 44 | 12 | 25.8 | .632 |
| Scott Barlow | Bos | mr | 28 | 6 | 2 | .333 | 1 | .167 | 18 | 35 | 11 | .314 | 80 | 80 | 14 | 17.9 | .647 |
| Jacob Barnes | Was | mr | 31 | 0 | 0 | .000 | 0 | .000 | 1 | 1 | 0 | .000 | 5 | 5 | 2 | 20.6 | .660 |
| Matt Barnes | Min | cl | 31 | 5 | 1 | .200 | 3 | .600 | 9 | 41 | 8 | .195 | 53 | 53 | 21 | 23.1 | .597 |
| Jaime Barria | Atl | sp | 24 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 14 | 0 | 0 | 92.9 | .651 |
| Tyler Bashlor | Phi | mr | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 16 | 7 | .438 | 14 | 14 | 3 | 21.5 | .588 |
| Anthony Bass | Mil | cl | 33 | 6 | 5 | .833 | 1 | .167 | 15 | 49 | 18 | .367 | 66 | 66 | 10 | 24.8 | .658 |
| Chris Bassitt | Was | sp | 32 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 92.2 | .641 |
| Trevor Bauer | Det | sp | 30 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 108.8 | .645 |
| Cam Bedrosian | Ari | mr | 29 | 15 | 13 | .867 | 2 | .133 | 3 | 22 | 6 | .273 | 36 | 36 | 30 | 20.7 | .608 |
| Jalen Beeks* | Bos | mr | 27 | 2 | 2 | 1.000 | 0 | .000 | 4 | 17 | 4 | .235 | 33 | 33 | 15 | 33.4 | .678 |
| Wes Benjamin* | Mia | mr | 27 | 0 | 0 | .000 | 0 | .000 | 0 | 2 | 0 | .000 | 8 | 1 | 1 | 86.5 | .618 |
| Travis Bergen* | Mia | mr | 27 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 1 | 1 | 1 | 18.0 | .556 |
| Jose Berrios | Cin | sp | 27 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 36 | 0 | 0 | 91.6 | .606 |
| Dellin Betances | Oak | mr | 33 | 2 | 0 | .000 | 1 | .500 | 1 | 4 | 2 | .500 | 8 | 8 | 2 | 18.0 | .542 |
| Joe Biagini | Tor | mr | 31 | 1 | 0 | .000 | 0 | .000 | 1 | 7 | 6 | .857 | 10 | 10 | 1 | 21.1 | .555 |
| Shane Bieber | Col | sp | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 2 | 2 | 1.000 | 31 | 1 | 1 | 104.9 | .631 |
| Brandon Bielak | Cle | sp | 25 | 1 | 0 | .000 | 1 | 1.000 | 0 | 6 | 3 | .500 | 26 | 8 | 4 | 65.3 | .571 |
| Ray Black | ChW | mr | 31 | 0 | 0 | .000 | 0 | .000 | 3 | 9 | 2 | .222 | 10 | 10 | 1 | 17.5 | .566 |
| Richard Bleier* | TB | mr | 34 | 4 | 1 | .250 | 1 | .250 | 10 | 22 | 4 | .182 | 43 | 43 | 12 | 17.5 | .632 |
| Scott Blewett | Tex | mr | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 12 | 5 | .417 | 9 | 9 | 1 | 31.0 | .613 |
| Ryan Borucki* | Min | mr | 27 | 2 | 1 | .500 | 1 | .500 | 7 | 15 | 5 | .333 | 34 | 34 | 10 | 21.5 | .568 |
| Brad Boxberger | Tex | mr | 33 | 3 | 0 | .000 | 3 | 1.000 | 8 | 51 | 23 | .451 | 68 | 68 | 14 | 20.5 | .589 |
| Matthew Boyd* | LAA | sp | 30 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 22 | 0 | 0 | 76.4 | .622 |
| Brad Brach | Phi | mr | 35 | 3 | 0 | .000 | 3 | 1.000 | 5 | 25 | 9 | .360 | 39 | 39 | 8 | 23.5 | .521 |
| Archie Bradley | Was | cl | 28 | 2 | 0 | .000 | 1 | .500 | 5 | 19 | 3 | .158 | 36 | 36 | 11 | 21.9 | .641 |
| Ryan Brasier | StL | mr | 33 | 4 | 1 | .250 | 3 | .750 | 7 | 23 | 6 | .261 | 48 | 48 | 19 | 21.6 | .604 |
| Steven Brault* | Mil | sp | 29 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 30 | 0 | 0 | 80.2 | .585 |
| Ben Braymer* | ChW | mr | 27 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 6 | 2 | 0 | 73.7 | .609 |
| Colten Brewer | Tor | mr | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 22 | 0 | 0 | 76.0 | .595 |
| Austin Brice | SF | mr | 29 | 1 | 0 | .000 | 1 | 1.000 | 1 | 10 | 3 | .300 | 29 | 26 | 14 | 26.0 | .579 |
| Zack Britton* | Oak | cl | 33 | 30 | 25 | .833 | 5 | .167 | 4 | 13 | 4 | .308 | 55 | 55 | 38 | 16.1 | .594 |
| Connor Brogdon | Pit | mr | 26 | 16 | 13 | .813 | 3 | .188 | 2 | 14 | 2 | .143 | 24 | 24 | 18 | 21.0 | .652 |
| JT Brubaker | Mia | sp | 27 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 18 | 0 | 0 | 92.8 | .634 |
| Kris Bubic* | Atl | sp | 23 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 30 | 1 | 1 | 92.7 | .612 |
| Walker Buehler | Was | sp | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 25 | 0 | 0 | 96.0 | .634 |
| Madison Bumgarner* | LAA | sp | 31 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 20 | 0 | 0 | 51.1 | .652 |
| Aaron Bummer* | ChC | mr | 27 | 13 | 11 | .846 | 2 | .154 | 1 | 8 | 4 | .500 | 27 | 27 | 21 | 20.1 | .589 |
| Dylan Bundy | NYY | sp | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 103.4 | .656 |
| Corbin Burnes | NYY | sp | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 29 | 0 | 0 | 103.1 | .618 |
| Ty Buttrey | NYM | mr | 28 | 12 | 7 | .583 | 5 | .417 | 13 | 45 | 16 | .356 | 69 | 69 | 32 | 21.7 | .648 |
| Genesis Cabrera* | Oak | mr | 24 | 3 | 0 | .000 | 3 | 1.000 | 18 | 25 | 1 | .040 | 56 | 56 | 11 | 19.4 | .569 |
| Trevor Cahill | Bal | sp | 33 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 20 | 0 | 0 | 83.5 | .573 |
| Griffin Canning | TB | sp | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 89.6 | .606 |
| Carlos Carrasco | StL | sp | 34 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 32 | 0 | 0 | 100.4 | .624 |
| Daniel Castano* | Cle | sp | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 18 | 0 | 0 | 88.9 | .598 |
| Ryan Castellani | Atl | sp | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 29 | 0 | 0 | 87.9 | .572 |
| Humberto Castellanos | Pit | mr | 23 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 6 | 6 | 4 | 36.5 | .530 |
| Diego Castillo | Cin | mr | 27 | 8 | 5 | .625 | 3 | .375 | 19 | 47 | 23 | .489 | 67 | 67 | 26 | 22.1 | .573 |
| Luis Castillo | Phi | sp | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 105.2 | .633 |
| Miguel Castro | Sea | mr | 26 | 4 | 3 | .750 | 1 | .250 | 9 | 36 | 10 | .278 | 43 | 43 | 19 | 21.2 | .607 |
| Dylan Cease | SD | sp | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 15 | 0 | 0 | 87.8 | .583 |
| Blake Cederlind | Oak | mr | 25 | 0 | 0 | .000 | 0 | .000 | 2 | 4 | 1 | .250 | 7 | 7 | 0 | 12.3 | .558 |
| Luis Cessa | SD | mr | 29 | 6 | 3 | .500 | 3 | .500 | 1 | 26 | 12 | .462 | 35 | 35 | 23 | 27.4 | .670 |
| Andrew Chafin* | Phi | mr | 31 | 4 | 1 | .250 | 3 | .750 | 5 | 25 | 17 | .680 | 28 | 28 | 12 | 19.8 | .595 |
| Aroldis Chapman* | Tor | mr | 33 | 21 | 16 | .762 | 5 | .238 | 1 | 15 | 2 | .133 | 35 | 35 | 26 | 17.7 | .653 |
| Tyler Chatwood | SF | sp | 31 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 17 | 0 | 0 | 86.2 | .592 |
| Jesse Chavez | Ari | mr | 37 | 8 | 3 | .375 | 5 | .625 | 6 | 61 | 30 | .492 | 53 | 53 | 34 | 25.8 | .602 |
| Yonny Chirinos | Det | sp | 27 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 5 | 0 | 0 | 59.8 | .625 |
| Adam Cimber | Tex | mr | 30 | 1 | 1 | 1.000 | 0 | .000 | 4 | 26 | 10 | .385 | 45 | 45 | 6 | 19.6 | .613 |
| Steve Cishek | Cin | mr | 35 | 0 | 0 | .000 | 0 | .000 | 3 | 21 | 7 | .333 | 21 | 21 | 7 | 22.0 | .577 |
| Jose Cisnero | LAA | mr | 32 | 10 | 3 | .300 | 3 | .300 | 27 | 45 | 20 | .444 | 82 | 82 | 20 | 17.3 | .623 |
| Aaron Civale | Cle | sp | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 103.0 | .659 |
| Taylor Clarke | Tor | mr | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 22 | 0 | 0 | 89.5 | .608 |
| Alex Claudio* | Cin | mr | 29 | 1 | 0 | .000 | 1 | 1.000 | 2 | 12 | 5 | .417 | 17 | 17 | 8 | 19.1 | .628 |
| Alex Claudio* | Cle | mr | 29 | 2 | 2 | 1.000 | 0 | .000 | 6 | 22 | 6 | .273 | 37 | 37 | 13 | 20.4 | .652 |
| Alex Claudio* |   | mr | 29 | 3 | 2 | .667 | 1 | .333 | 8 | 34 | 11 | .324 | 54 | 54 | 21 | 20.0 | .645 |
| Mike Clevinger | Phi | sp | 30 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 27 | 0 | 0 | 96.5 | .617 |
| Tyler Clippard | Oak | mr | 36 | 13 | 9 | .692 | 4 | .308 | 15 | 25 | 8 | .320 | 68 | 63 | 25 | 18.0 | .643 |
| Alex Cobb | Bal | sp | 33 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 30 | 0 | 0 | 88.7 | .621 |
| Kyle Cody | Det | sp | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 20 | 1 | 1 | 82.7 | .579 |
| A.J. Cole | Tor | mr | 29 | 3 | 2 | .667 | 0 | .000 | 5 | 20 | 5 | .250 | 39 | 39 | 18 | 25.1 | .626 |
| Gerrit Cole | Col | sp | 30 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 31 | 0 | 0 | 100.6 | .656 |
| Alex Colome | Min | cl | 32 | 39 | 36 | .923 | 3 | .077 | 2 | 42 | 12 | .286 | 60 | 60 | 55 | 16.9 | .591 |
| Sam Coonrod | SF | mr | 28 | 0 | 0 | .000 | 0 | .000 | 1 | 30 | 15 | .500 | 41 | 41 | 13 | 27.0 | .598 |
| Patrick Corbin* | Atl | sp | 31 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 91.9 | .656 |
| Jimmy Cordero | Phi | mr | 29 | 11 | 6 | .545 | 4 | .364 | 3 | 15 | 6 | .400 | 33 | 33 | 23 | 16.2 | .630 |
| Dylan Covey | Min | mr | 29 | 2 | 1 | .500 | 1 | .500 | 3 | 11 | 4 | .364 | 22 | 22 | 7 | 35.8 | .657 |
| Stefan Crichton | Mil | mr | 29 | 8 | 7 | .875 | 1 | .125 | 18 | 23 | 3 | .130 | 65 | 65 | 17 | 20.1 | .667 |
| Kyle Crick | Bal | mr | 28 | 1 | 1 | 1.000 | 0 | .000 | 0 | 2 | 0 | .000 | 2 | 2 | 2 | 8.0 | .813 |
| Garrett Crochet* | StL | mr | 22 | 0 | 0 | .000 | 0 | .000 | 0 | 1 | 0 | .000 | 1 | 1 | 0 | 46.0 | .630 |
| Wil Crowe | Tex | sp | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 4 | 0 | 0 | 70.8 | .537 |
| Johnny Cueto | Oak | sp | 35 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 94.6 | .611 |
| John Curtiss | Bal | mr | 28 | 2 | 2 | 1.000 | 0 | .000 | 11 | 34 | 11 | .324 | 50 | 47 | 9 | 26.3 | .670 |
| Yu Darvish | LAA | sp | 34 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 103.2 | .677 |
| Zach Davies | Pit | sp | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 101.8 | .637 |
| Wade Davis | Col | cl | 35 | 0 | 0 | .000 | 0 | .000 | 0 | 10 | 1 | .100 | 9 | 9 | 3 | 25.0 | .631 |
| Grant Dayton* | Atl | mr | 33 | 7 | 3 | .429 | 3 | .429 | 8 | 35 | 12 | .343 | 50 | 50 | 11 | 28.8 | .622 |
| Chase De Jong | Col | sp | 27 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 6 | 0 | 0 | 68.7 | .587 |
| Jacob deGrom | LAD | sp | 33 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 34 | 0 | 0 | 104.5 | .636 |
| Anthony DeSclafani | Min | sp | 31 | 2 | 2 | 1.000 | 0 | .000 | 3 | 36 | 14 | .389 | 36 | 36 | 8 | 29.5 | .589 |
| Ross Detwiler* | NYM | mr | 35 | 10 | 4 | .400 | 4 | .400 | 5 | 24 | 9 | .375 | 42 | 42 | 17 | 20.0 | .678 |
| Chris Devenski | KC | mr | 30 | 0 | 0 | .000 | 0 | .000 | 1 | 5 | 1 | .200 | 6 | 6 | 1 | 27.0 | .574 |
| Edwin Diaz | NYY | mr | 27 | 8 | 3 | .375 | 5 | .625 | 18 | 19 | 8 | .421 | 53 | 53 | 15 | 21.1 | .597 |
| Jairo Diaz | LAD | mr | 30 | 0 | 0 | .000 | 0 | .000 | 1 | 14 | 7 | .500 | 15 | 15 | 9 | 28.2 | .563 |
| Jake Diekman* | Sea | mr | 34 | 28 | 27 | .964 | 1 | .036 | 3 | 26 | 4 | .154 | 56 | 56 | 48 | 18.5 | .605 |
| Randy Dobnak | Oak | sp | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 24 | 0 | 0 | 83.5 | .639 |
| Rafael Dolis | LAA | mr | 33 | 39 | 36 | .923 | 3 | .077 | 3 | 36 | 6 | .167 | 66 | 66 | 53 | 18.5 | .581 |
| Sean Doolittle* | Cle | mr | 34 | 4 | 0 | .000 | 4 | 1.000 | 1 | 31 | 15 | .484 | 41 | 41 | 17 | 19.0 | .613 |
| Tommy Doyle | Tor | mr | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 5 | 2 | .400 | 5 | 5 | 2 | 19.6 | .643 |
| Oliver Drake | LAA | mr | 34 | 2 | 1 | .500 | 1 | .500 | 7 | 18 | 5 | .278 | 33 | 33 | 7 | 19.8 | .609 |
| Tyler Duffey | TB | mr | 30 | 20 | 18 | .900 | 2 | .100 | 3 | 30 | 10 | .333 | 52 | 52 | 44 | 21.9 | .620 |
| Danny Duffy* | NYY | sp | 32 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 32 | 0 | 0 | 94.5 | .629 |
| Robert Dugger | KC | mr | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 4 | 3 | 1 | 58.5 | .632 |
| Justin Dunn | Hou | sp | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 30 | 0 | 0 | 86.9 | .576 |
| Dane Dunning | NYM | sp | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 22 | 0 | 0 | 94.1 | .607 |
| Carl Edwards | Bal | mr | 29 | 0 | 0 | .000 | 0 | .000 | 1 | 0 | 0 | .000 | 3 | 3 | 1 | 25.3 | .526 |
| Zach Eflin | Mia | sp | 27 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 30 | 0 | 0 | 94.9 | .642 |
| Seth Elledge | Tex | mr | 25 | 2 | 0 | .000 | 2 | 1.000 | 3 | 22 | 9 | .409 | 33 | 33 | 6 | 22.2 | .551 |
| Nathan Eovaldi | ChW | sp | 31 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 27 | 0 | 0 | 83.6 | .678 |
| Robbie Erlin* | NYM | sp | 30 | 0 | 0 | .000 | 0 | .000 | 0 | 1 | 0 | .000 | 21 | 1 | 0 | 75.0 | .653 |
| Thomas Eshelman | Tex | mr | 27 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 12 | 0 | 0 | 77.8 | .608 |
| Carlos Estevez | Phi | mr | 28 | 4 | 1 | .250 | 3 | .750 | 3 | 23 | 7 | .304 | 36 | 36 | 13 | 26.1 | .610 |
| Pete Fairbanks | Det | mr | 27 | 9 | 5 | .556 | 3 | .333 | 11 | 36 | 9 | .250 | 65 | 63 | 20 | 20.4 | .594 |
| Jeurys Familia | Was | mr | 31 | 3 | 0 | .000 | 2 | .667 | 2 | 7 | 5 | .714 | 10 | 10 | 1 | 21.4 | .603 |
| Buck Farmer | Min | mr | 30 | 5 | 3 | .600 | 2 | .400 | 9 | 25 | 7 | .280 | 44 | 44 | 17 | 22.9 | .656 |
| Erick Fedde | Sea | sp | 28 | 0 | 0 | .000 | 0 | .000 | 2 | 3 | 1 | .333 | 35 | 13 | 6 | 63.9 | .588 |
| Caleb Ferguson* | Was | mr | 24 | 1 | 1 | 1.000 | 0 | .000 | 2 | 18 | 6 | .333 | 26 | 22 | 9 | 25.0 | .664 |
| J.P. Feyereisen | LAA | mr | 28 | 1 | 0 | .000 | 1 | 1.000 | 2 | 14 | 4 | .286 | 20 | 20 | 4 | 34.2 | .577 |
| Mike Fiers | SD | sp | 36 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 32 | 0 | 0 | 90.1 | .623 |
| Kyle Finnegan | Col | mr | 29 | 9 | 7 | .778 | 1 | .111 | 18 | 54 | 10 | .185 | 78 | 78 | 18 | 20.6 | .597 |
| Jack Flaherty | Det | sp | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 28 | 0 | 0 | 96.5 | .597 |
| Josh Fleming* | Mia | sp | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 16 | 0 | 0 | 87.1 | .661 |
| Dylan Floro | Min | mr | 30 | 7 | 3 | .429 | 3 | .429 | 16 | 25 | 11 | .440 | 54 | 54 | 15 | 21.4 | .689 |
| Wilmer Font | Ari | mr | 31 | 4 | 0 | .000 | 4 | 1.000 | 3 | 37 | 15 | .405 | 48 | 48 | 12 | 28.6 | .553 |
| Matt Foster | Was | mr | 26 | 6 | 2 | .333 | 3 | .500 | 12 | 7 | 3 | .429 | 47 | 41 | 15 | 22.1 | .620 |
| Kyle Freeland* | ChW | sp | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 36 | 0 | 0 | 96.2 | .626 |
| Sam Freeman* | Sea | mr | 34 | 0 | 0 | .000 | 0 | .000 | 6 | 3 | 1 | .333 | 10 | 10 | 1 | 18.3 | .607 |
| Max Fried* | Oak | sp | 27 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 93.0 | .633 |
| Jace Fry* | Cle | mr | 27 | 7 | 4 | .571 | 3 | .429 | 5 | 38 | 9 | .237 | 52 | 52 | 21 | 22.7 | .595 |
| Paul Fry* | Oak | mr | 28 | 3 | 1 | .333 | 1 | .333 | 6 | 15 | 3 | .200 | 21 | 21 | 6 | 15.0 | .613 |
| Carson Fulmer | SD | mr | 27 | 0 | 0 | .000 | 0 | .000 | 1 | 6 | 3 | .500 | 7 | 7 | 4 | 27.3 | .597 |
| Michael Fulmer | Tex | sp | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 28 | 0 | 0 | 68.3 | .622 |
| Giovanny Gallegos | Hou | mr | 29 | 7 | 5 | .714 | 2 | .286 | 9 | 26 | 8 | .308 | 41 | 41 | 19 | 20.2 | .644 |
| Zac Gallen | Ari | sp | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 2 | 1 | .500 | 34 | 1 | 1 | 111.1 | .606 |
| John Gant | ChC | mr | 28 | 6 | 5 | .833 | 1 | .167 | 15 | 18 | 4 | .222 | 55 | 55 | 17 | 24.2 | .582 |
| Bryan Garcia | Atl | mr | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 4 | 1 | .250 | 7 | 7 | 4 | 24.7 | .601 |
| Deivi Garcia | Mia | sp | 22 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 4 | 0 | 0 | 93.8 | .664 |
| Edgar Garcia | Phi | mr | 24 | 0 | 0 | .000 | 0 | .000 | 0 | 2 | 0 | .000 | 2 | 2 | 1 | 21.0 | .571 |
| Jarlin Garcia* | LAA | mr | 28 | 6 | 2 | .333 | 3 | .500 | 19 | 24 | 6 | .250 | 55 | 55 | 10 | 18.7 | .635 |
| Luis Garcia | KC | mr | 34 | 1 | 0 | .000 | 1 | 1.000 | 0 | 16 | 9 | .563 | 23 | 23 | 14 | 35.9 | .550 |
| Luis Garcia | Pit | mr | 24 | 1 | 0 | .000 | 1 | 1.000 | 0 | 2 | 2 | 1.000 | 9 | 5 | 4 | 51.0 | .627 |
| Rico Garcia | LAD | mr | 27 | 1 | 1 | 1.000 | 0 | .000 | 0 | 5 | 3 | .600 | 9 | 9 | 4 | 25.7 | .593 |
| Rony Garcia | Col | mr | 23 | 1 | 0 | .000 | 1 | 1.000 | 0 | 13 | 3 | .231 | 25 | 15 | 8 | 45.2 | .627 |
| Yimi Garcia | KC | mr | 30 | 20 | 15 | .750 | 5 | .250 | 0 | 14 | 5 | .357 | 30 | 30 | 23 | 24.6 | .622 |
| Amir Garrett* | Phi | mr | 29 | 15 | 14 | .933 | 1 | .067 | 4 | 32 | 5 | .156 | 47 | 47 | 31 | 17.7 | .649 |
| Braxton Garrett* | TB | sp | 23 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 6 | 0 | 0 | 68.7 | .500 |
| Kevin Gausman | SD | sp | 30 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 30 | 0 | 0 | 98.1 | .642 |
| Sam Gaviglio | Col | mr | 31 | 0 | 0 | .000 | 0 | .000 | 0 | 5 | 4 | .800 | 7 | 7 | 2 | 32.6 | .500 |
| Joey Gerber | Phi | mr | 24 | 3 | 1 | .333 | 2 | .667 | 6 | 34 | 14 | .412 | 47 | 47 | 20 | 19.1 | .612 |
| Ian Gibaut | Hou | mr | 27 | 0 | 0 | .000 | 0 | .000 | 2 | 14 | 3 | .214 | 22 | 22 | 12 | 25.7 | .548 |
| Kyle Gibson | Oak | sp | 33 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 3 | 0 | 0 | 89.3 | .634 |
| Kevin Ginkel | Mil | mr | 27 | 1 | 1 | 1.000 | 0 | .000 | 0 | 4 | 1 | .250 | 2 | 2 | 1 | 25.5 | .588 |
| Lucas Giolito | SD | sp | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 102.8 | .616 |
| Mychal Givens | SD | mr | 31 | 2 | 1 | .500 | 1 | .500 | 1 | 23 | 13 | .565 | 21 | 21 | 15 | 28.9 | .554 |
| Tyler Glasnow | Sea | sp | 27 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 95.0 | .625 |
| Zack Godley | Col | sp | 31 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 22 | 0 | 0 | 72.0 | .604 |
| Austin Gomber* | LAA | mr | 27 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 23 | 0 | 0 | 86.2 | .599 |
| Tony Gonsolin | Mil | sp | 27 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 25 | 0 | 0 | 92.0 | .665 |
| Marco Gonzales* | Was | sp | 29 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 93.4 | .702 |
| Chi Chi Gonzalez | SF | sp | 29 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 14 | 0 | 0 | 95.0 | .587 |
| Gio Gonzalez* | NYM | mr | 35 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 23 | 0 | 0 | 78.9 | .599 |
| Victor Gonzalez* | LAD | mr | 25 | 7 | 7 | 1.000 | 0 | .000 | 4 | 24 | 3 | .125 | 32 | 32 | 21 | 25.3 | .729 |
| Nick Goody | Cin | mr | 29 | 1 | 0 | .000 | 0 | .000 | 1 | 3 | 0 | .000 | 4 | 4 | 0 | 25.8 | .524 |
| Trevor Gott | Tor | cl | 28 | 0 | 0 | .000 | 0 | .000 | 1 | 6 | 5 | .833 | 4 | 4 | 1 | 17.8 | .592 |
| Ashton Goudeau | Hou | mr | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 3 | 0 | .000 | 2 | 2 | 1 | 14.0 | .714 |
| Brusdar Graterol | Col | mr | 22 | 19 | 19 | 1.000 | 0 | .000 | 7 | 32 | 4 | .125 | 69 | 69 | 36 | 17.9 | .661 |
| Kendall Graveman | Mia | mr | 30 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 4 | 0 | 0 | 83.0 | .590 |
| Jon Gray | Hou | sp | 29 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 25 | 0 | 0 | 88.4 | .635 |
| Sonny Gray | Ari | sp | 31 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 34 | 1 | 1 | 101.5 | .582 |
| Chad Green | Oak | mr | 30 | 6 | 3 | .500 | 2 | .333 | 19 | 33 | 11 | .333 | 61 | 61 | 18 | 18.2 | .665 |
| Shane Greene | Was | mr | 32 | 1 | 0 | .000 | 0 | .000 | 7 | 9 | 2 | .222 | 31 | 31 | 10 | 22.2 | .637 |
| Zack Greinke | ChC | sp | 37 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 37 | 1 | 0 | 91.4 | .684 |
| Foster Griffin* | ChW | mr | 25 | 0 | 0 | .000 | 0 | .000 | 1 | 0 | 0 | .000 | 6 | 6 | 3 | 29.5 | .593 |
| Robert Gsellman | Was | sp | 27 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 11 | 0 | 0 | 79.5 | .574 |
| Junior Guerra | Hou | mr | 36 | 5 | 2 | .400 | 3 | .600 | 10 | 44 | 16 | .364 | 64 | 64 | 17 | 23.6 | .601 |
| Taylor Guilbeau* | Cin | mr | 28 | 2 | 1 | .500 | 1 | .500 | 2 | 6 | 1 | .167 | 11 | 11 | 5 | 26.5 | .588 |
| Josh Hader* | SD | cl | 27 | 6 | 3 | .500 | 3 | .500 | 23 | 39 | 10 | .256 | 60 | 60 | 19 | 25.0 | .590 |
| Jesse Hahn | Bal | mr | 31 | 7 | 4 | .571 | 1 | .143 | 16 | 13 | 4 | .308 | 54 | 54 | 21 | 23.4 | .616 |
| David Hale | Mia | mr | 33 | 2 | 2 | 1.000 | 0 | .000 | 2 | 9 | 2 | .222 | 9 | 9 | 6 | 24.4 | .614 |
| Cole Hamels* | Hou | sp | 37 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 4 | 0 | 0 | 75.8 | .624 |
| Brad Hand* | Hou | cl | 31 | 30 | 28 | .933 | 2 | .067 | 1 | 9 | 1 | .111 | 53 | 53 | 44 | 17.9 | .659 |
| J.A. Happ* | ChC | sp | 38 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 28 | 1 | 1 | 90.6 | .635 |
| Ryne Harper | KC | mr | 32 | 3 | 1 | .333 | 2 | .667 | 1 | 14 | 7 | .500 | 21 | 21 | 10 | 22.4 | .624 |
| Will Harris | Det | mr | 36 | 0 | 0 | .000 | 0 | .000 | 4 | 3 | 0 | .000 | 10 | 10 | 3 | 13.2 | .667 |
| Geoff Hartlieb | LAA | mr | 27 | 4 | 2 | .500 | 1 | .250 | 8 | 29 | 11 | .379 | 58 | 58 | 14 | 21.2 | .531 |
| Hunter Harvey | NYM | mr | 26 | 5 | 4 | .800 | 1 | .200 | 0 | 16 | 7 | .438 | 27 | 27 | 14 | 27.4 | .619 |
| Matt Harvey | StL | sp | 32 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 14 | 0 | 0 | 61.9 | .611 |
| Thomas Hatch | NYM | mr | 26 | 4 | 3 | .750 | 1 | .250 | 3 | 55 | 23 | .418 | 59 | 59 | 17 | 30.4 | .574 |
| Andrew Heaney* | StL | sp | 30 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 99.4 | .641 |
| Taylor Hearn* | Tex | mr | 26 | 0 | 0 | .000 | 0 | .000 | 1 | 41 | 10 | .244 | 45 | 45 | 21 | 28.5 | .583 |
| Ben Heller | Hou | mr | 29 | 2 | 1 | .500 | 1 | .500 | 0 | 32 | 13 | .406 | 46 | 46 | 11 | 23.1 | .578 |
| Ryan Helsley | Pit | mr | 26 | 4 | 2 | .500 | 1 | .250 | 4 | 10 | 2 | .200 | 24 | 24 | 10 | 24.0 | .572 |
| Heath Hembree | Cle | mr | 32 | 4 | 1 | .250 | 3 | .750 | 1 | 38 | 13 | .342 | 46 | 46 | 21 | 22.8 | .607 |
| Kyle Hendricks | Was | sp | 31 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 97.7 | .708 |
| Liam Hendriks | Bal | cl | 32 | 37 | 33 | .892 | 2 | .054 | 1 | 40 | 11 | .275 | 65 | 65 | 49 | 21.1 | .718 |
| Jimmy Herget | Bal | mr | 27 | 4 | 2 | .500 | 1 | .250 | 8 | 14 | 4 | .286 | 44 | 43 | 21 | 23.9 | .577 |
| Carlos Hernandez | SF | sp | 24 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 9 | 0 | 0 | 101.4 | .596 |
| Darwinzon Hernandez* | Atl | mr | 24 | 4 | 2 | .500 | 2 | .500 | 0 | 15 | 5 | .333 | 17 | 17 | 10 | 32.8 | .562 |
| Elieser Hernandez | Phi | sp | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 21 | 0 | 0 | 90.1 | .659 |
| Jonathan Hernandez | Tex | mr | 24 | 4 | 2 | .500 | 2 | .500 | 7 | 65 | 17 | .262 | 72 | 72 | 21 | 23.1 | .657 |
| Codi Heuer | Was | mr | 24 | 36 | 34 | .944 | 2 | .056 | 0 | 12 | 1 | .083 | 56 | 56 | 48 | 17.9 | .621 |
| Cam Hill | KC | mr | 27 | 2 | 2 | 1.000 | 0 | .000 | 6 | 25 | 10 | .400 | 29 | 29 | 8 | 27.1 | .621 |
| Rich Hill* | Hou | sp | 41 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 25 | 0 | 0 | 92.4 | .605 |
| Tim Hill* | LAD | mr | 31 | 2 | 1 | .500 | 1 | .500 | 12 | 22 | 5 | .227 | 38 | 38 | 14 | 17.6 | .657 |
| Jeff Hoffman | TB | mr | 28 | 2 | 1 | .500 | 1 | .500 | 0 | 38 | 17 | .447 | 35 | 35 | 21 | 25.2 | .652 |
| Derek Holland* | Phi | mr | 34 | 8 | 5 | .625 | 3 | .375 | 6 | 24 | 12 | .500 | 43 | 43 | 17 | 25.1 | .651 |
| Greg Holland | Bal | mr | 35 | 10 | 6 | .600 | 2 | .200 | 32 | 30 | 7 | .233 | 72 | 72 | 15 | 21.9 | .646 |
| Clay Holmes | Hou | mr | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 1 | 1 | 1 | 24.0 | .583 |
| Tanner Houck | Cle | sp | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 9 | 0 | 0 | 92.1 | .544 |
| Adrian Houser | LAD | sp | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 26 | 0 | 0 | 83.8 | .626 |
| Sam Howard* | KC | mr | 28 | 4 | 3 | .750 | 1 | .250 | 9 | 21 | 7 | .333 | 37 | 37 | 11 | 27.2 | .597 |
| Spencer Howard | NYM | sp | 24 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 19 | 0 | 0 | 87.7 | .602 |
| James Hoyt | ChW | mr | 34 | 10 | 4 | .400 | 4 | .400 | 22 | 46 | 8 | .174 | 66 | 66 | 14 | 16.9 | .609 |
| Dakota Hudson | Bos | sp | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 25 | 0 | 0 | 87.2 | .615 |
| Daniel Hudson | SF | cl | 34 | 12 | 11 | .917 | 1 | .083 | 0 | 11 | 1 | .091 | 30 | 30 | 26 | 17.9 | .580 |
| Jared Hughes | Ari | mr | 35 | 8 | 3 | .375 | 4 | .500 | 10 | 41 | 15 | .366 | 59 | 59 | 24 | 29.0 | .575 |
| Tommy Hunter | Bal | mr | 34 | 3 | 2 | .667 | 1 | .333 | 5 | 13 | 2 | .154 | 39 | 39 | 20 | 22.3 | .606 |
| Raisel Iglesias | Was | cl | 31 | 4 | 2 | .500 | 1 | .250 | 9 | 13 | 2 | .154 | 40 | 40 | 14 | 17.5 | .684 |
| Luke Jackson | Pit | mr | 29 | 5 | 1 | .200 | 3 | .600 | 6 | 38 | 18 | .474 | 48 | 48 | 20 | 29.0 | .597 |
| Josh James | SD | mr | 28 | 3 | 2 | .667 | 1 | .333 | 1 | 16 | 6 | .375 | 13 | 13 | 8 | 27.1 | .511 |
| Kenley Jansen | NYY | cl | 33 | 3 | 2 | .667 | 1 | .333 | 5 | 11 | 1 | .091 | 29 | 29 | 17 | 25.0 | .599 |
| Cristian Javier | Bos | sp | 24 | 2 | 2 | 1.000 | 0 | .000 | 1 | 1 | 0 | .000 | 33 | 3 | 2 | 80.0 | .611 |
| Jeremy Jeffress | Mil | cl | 33 | 27 | 25 | .926 | 2 | .074 | 3 | 14 | 1 | .071 | 56 | 56 | 43 | 20.8 | .608 |
| Joe Jimenez | StL | mr | 26 | 0 | 0 | .000 | 0 | .000 | 3 | 43 | 15 | .349 | 44 | 44 | 7 | 26.6 | .638 |
| Pierce Johnson | KC | mr | 30 | 8 | 4 | .500 | 3 | .375 | 8 | 14 | 2 | .143 | 37 | 37 | 15 | 27.2 | .586 |
| Nate Jones | NYM | mr | 35 | 2 | 1 | .500 | 1 | .500 | 1 | 28 | 14 | .500 | 36 | 36 | 19 | 22.9 | .650 |
| Jakob Junis | SF | sp | 28 | 1 | 0 | .000 | 1 | 1.000 | 0 | 0 | 0 | .000 | 24 | 5 | 1 | 72.7 | .638 |
| Rob Kaminsky* | Bos | mr | 26 | 0 | 0 | .000 | 0 | .000 | 3 | 8 | 1 | .125 | 11 | 11 | 2 | 12.9 | .592 |
| James Kaprielian | Ari | mr | 27 | 0 | 0 | .000 | 0 | .000 | 0 | 6 | 2 | .333 | 3 | 3 | 3 | 31.0 | .667 |
| James Karinchak | SD | mr | 25 | 12 | 5 | .417 | 6 | .500 | 17 | 30 | 16 | .533 | 64 | 64 | 22 | 26.8 | .581 |
| Anthony Kay* | Det | mr | 26 | 1 | 0 | .000 | 0 | .000 | 1 | 5 | 4 | .800 | 14 | 14 | 5 | 35.1 | .605 |
| Brad Keller | Cle | sp | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 18 | 0 | 0 | 105.5 | .629 |
| Brad Keller | Sea | sp | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 9 | 0 | 0 | 93.0 | .662 |
| Brad Keller |   | sp | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 27 | 0 | 0 | 101.3 | .639 |
| Mitch Keller | ChW | sp | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 17 | 0 | 0 | 88.6 | .524 |
| Joe Kelly | ChC | mr | 33 | 1 | 0 | .000 | 1 | 1.000 | 2 | 6 | 1 | .167 | 16 | 11 | 5 | 33.6 | .500 |
| Merrill Kelly | Was | sp | 32 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 17 | 0 | 0 | 96.9 | .694 |
| Ian Kennedy | Min | mr | 36 | 0 | 0 | .000 | 0 | .000 | 1 | 10 | 7 | .700 | 12 | 12 | 2 | 29.3 | .638 |
| Clayton Kershaw* | Mil | sp | 33 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 30 | 0 | 0 | 88.9 | .693 |
| Dallas Keuchel* | ChC | sp | 33 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 99.6 | .634 |
| Mike Kickham* | Hou | mr | 32 | 0 | 0 | .000 | 0 | .000 | 0 | 2 | 0 | .000 | 3 | 1 | 1 | 48.3 | .683 |
| Yusei Kikuchi* | Cin | sp | 30 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 22 | 0 | 0 | 90.3 | .610 |
| Franklyn Kilome | SD | mr | 26 | 2 | 0 | .000 | 2 | 1.000 | 1 | 3 | 0 | .000 | 8 | 8 | 5 | 35.9 | .592 |
| Kwang Hyun Kim* | Bos | sp | 32 | 0 | 0 | .000 | 0 | .000 | 1 | 0 | 0 | .000 | 25 | 2 | 0 | 86.9 | .645 |
| Craig Kimbrel | NYM | mr | 33 | 2 | 0 | .000 | 1 | .500 | 2 | 24 | 8 | .333 | 41 | 41 | 22 | 27.8 | .568 |
| John King* | NYM | mr | 26 | 0 | 0 | .000 | 0 | .000 | 1 | 15 | 5 | .333 | 14 | 14 | 7 | 29.4 | .623 |
| Michael King | ChC | mr | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 16 | 1 | 1 | 81.5 | .624 |
| Tyler Kinley | Col | mr | 30 | 4 | 2 | .500 | 1 | .250 | 14 | 30 | 11 | .367 | 62 | 62 | 18 | 22.4 | .563 |
| Brandon Kintzler | Tor | cl | 36 | 10 | 4 | .400 | 6 | .600 | 13 | 34 | 4 | .118 | 66 | 66 | 16 | 24.2 | .612 |
| Andrew Kittredge | Det | mr | 31 | 0 | 0 | .000 | 0 | .000 | 11 | 13 | 4 | .308 | 25 | 22 | 5 | 21.0 | .599 |
| Branden Kline | Cin | mr | 29 | 4 | 2 | .500 | 2 | .500 | 0 | 9 | 6 | .667 | 7 | 7 | 2 | 26.9 | .596 |
| Corey Kluber | Mia | sp | 35 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 2 | 0 | 0 | 89.0 | .640 |
| Adam Kolarek* | Bos | mr | 32 | 4 | 3 | .750 | 0 | .000 | 22 | 29 | 7 | .241 | 59 | 59 | 10 | 16.0 | .658 |
| Dean Kremer | Min | sp | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 14 | 0 | 0 | 97.2 | .564 |
| Chad Kuhl | Oak | sp | 28 | 4 | 3 | .750 | 1 | .250 | 6 | 23 | 8 | .348 | 55 | 51 | 21 | 37.9 | .575 |
| Brady Lail | Cin | mr | 27 | 3 | 3 | 1.000 | 0 | .000 | 0 | 9 | 2 | .222 | 19 | 19 | 12 | 34.6 | .596 |
| Travis Lakins | Tex | mr | 27 | 8 | 5 | .625 | 3 | .375 | 0 | 21 | 5 | .238 | 51 | 51 | 37 | 21.7 | .574 |
| Jimmy Lambert | TB | mr | 26 | 1 | 0 | .000 | 1 | 1.000 | 0 | 6 | 1 | .167 | 8 | 8 | 3 | 23.4 | .551 |
| Dinelson Lamet | KC | sp | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 32 | 0 | 0 | 95.0 | .645 |
| Wade LeBlanc* | Atl | sp | 36 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 8 | 0 | 0 | 78.9 | .632 |
| Jose Leclerc | Pit | cl | 27 | 3 | 0 | .000 | 3 | 1.000 | 1 | 1 | 1 | 1.000 | 5 | 5 | 3 | 14.4 | .569 |
| Brandon Leibrandt* | Min | mr | 28 | 1 | 0 | .000 | 1 | 1.000 | 3 | 19 | 6 | .316 | 15 | 15 | 4 | 39.0 | .526 |
| Jon Lester* | Det | sp | 37 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 89.4 | .632 |
| Josh Lindblom | KC | sp | 34 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 24 | 0 | 0 | 98.0 | .595 |
| Jonathan Loaisiga | Tor | mr | 26 | 9 | 9 | 1.000 | 0 | .000 | 1 | 0 | 0 | .000 | 14 | 14 | 13 | 25.1 | .667 |
| Walker Lockett | Cle | mr | 27 | 2 | 0 | .000 | 2 | 1.000 | 1 | 17 | 6 | .353 | 23 | 22 | 9 | 37.7 | .626 |
| Jorge Lopez | Bal | sp | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 2 | 1 | .500 | 13 | 1 | 1 | 80.2 | .652 |
| Pablo Lopez | LAD | sp | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 34 | 0 | 0 | 102.1 | .621 |
| Reynaldo Lopez | TB | sp | 27 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 25 | 0 | 0 | 63.5 | .603 |
| Yoan Lopez | Ari | mr | 28 | 10 | 3 | .300 | 6 | .600 | 5 | 40 | 22 | .550 | 49 | 49 | 25 | 25.6 | .602 |
| Michael Lorenzen | Tor | mr | 29 | 0 | 0 | .000 | 0 | .000 | 0 | 4 | 1 | .250 | 20 | 3 | 2 | 78.3 | .615 |
| Aaron Loup* | Det | mr | 33 | 9 | 5 | .556 | 2 | .222 | 18 | 44 | 10 | .227 | 64 | 64 | 20 | 16.6 | .672 |
| Joey Lucchesi* | Phi | sp | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 6 | 0 | 0 | 73.8 | .614 |
| Seth Lugo | Cin | cl | 31 | 15 | 11 | .733 | 4 | .267 | 2 | 23 | 7 | .304 | 48 | 45 | 26 | 27.2 | .653 |
| Jesus Luzardo* | NYM | sp | 23 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 30 | 0 | 0 | 88.7 | .660 |
| Jordan Lyles | Cin | sp | 30 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 26 | 0 | 0 | 90.5 | .607 |
| Lance Lynn | NYY | sp | 34 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 36 | 0 | 0 | 105.1 | .634 |
| Kenta Maeda | Ari | sp | 33 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 32 | 0 | 0 | 103.8 | .673 |
| Matt Magill | Hou | mr | 31 | 0 | 0 | .000 | 0 | .000 | 0 | 16 | 8 | .500 | 19 | 19 | 5 | 27.1 | .551 |
| Tyler Mahle | Min | sp | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 27 | 0 | 0 | 89.5 | .597 |
| Sean Manaea* | Phi | sp | 29 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 95.2 | .700 |
| Nick Margevicius* | Sea | sp | 25 | 2 | 2 | 1.000 | 0 | .000 | 4 | 22 | 6 | .273 | 31 | 30 | 7 | 44.6 | .658 |
| Brailyn Marquez* | Ari | mr | 22 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 2 | 2 | 1 | 77.5 | .432 |
| German Marquez | Det | sp | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 36 | 0 | 0 | 102.4 | .629 |
| Evan Marshall | LAD | mr | 31 | 23 | 16 | .696 | 7 | .304 | 9 | 43 | 16 | .372 | 56 | 56 | 33 | 22.3 | .619 |
| Brett Martin* | Atl | mr | 26 | 6 | 1 | .167 | 5 | .833 | 13 | 20 | 5 | .250 | 43 | 43 | 11 | 19.9 | .560 |
| Chris Martin | Bos | mr | 35 | 6 | 5 | .833 | 0 | .000 | 7 | 11 | 0 | .000 | 27 | 27 | 10 | 17.3 | .754 |
| Chris Martin | Cle | mr | 35 | 13 | 11 | .846 | 2 | .154 | 1 | 12 | 3 | .250 | 26 | 26 | 19 | 16.7 | .707 |
| Chris Martin |   | mr | 35 | 19 | 16 | .842 | 2 | .105 | 8 | 23 | 3 | .130 | 53 | 53 | 29 | 17.0 | .732 |
| Carlos Martinez | Det | sp | 29 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 1 | 0 | 0 | 25.0 | .760 |
| Phil Maton | LAD | mr | 28 | 2 | 0 | .000 | 2 | 1.000 | 11 | 21 | 8 | .381 | 46 | 46 | 16 | 22.2 | .658 |
| Tyler Matzek* | Hou | mr | 30 | 9 | 3 | .333 | 5 | .556 | 14 | 32 | 5 | .156 | 51 | 51 | 17 | 26.4 | .626 |
| Dustin May | NYY | sp | 23 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 28 | 0 | 0 | 88.1 | .634 |
| Trevor May | ChC | mr | 31 | 1 | 1 | 1.000 | 0 | .000 | 8 | 40 | 14 | .350 | 55 | 55 | 16 | 26.6 | .635 |
| Mike Mayers | Atl | mr | 29 | 23 | 22 | .957 | 1 | .043 | 2 | 37 | 12 | .324 | 75 | 75 | 51 | 20.7 | .648 |
| Chris Mazza | Atl | sp | 31 | 0 | 0 | .000 | 0 | .000 | 0 | 3 | 3 | 1.000 | 14 | 6 | 5 | 60.0 | .594 |
| Lance McCullers | Pit | sp | 27 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 32 | 0 | 0 | 96.5 | .594 |
| Jake McGee* | KC | mr | 34 | 8 | 6 | .750 | 2 | .250 | 1 | 14 | 5 | .357 | 34 | 34 | 23 | 23.7 | .677 |
| Kyle McGowin | Cle | mr | 29 | 1 | 0 | .000 | 1 | 1.000 | 5 | 21 | 9 | .429 | 27 | 27 | 6 | 25.0 | .614 |
| Triston McKenzie | Tex | sp | 23 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 15 | 0 | 0 | 87.3 | .648 |
| John Means* | Col | sp | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 25 | 0 | 0 | 79.0 | .664 |
| Nick Mears | LAA | mr | 24 | 0 | 0 | .000 | 0 | .000 | 0 | 4 | 3 | .750 | 4 | 4 | 2 | 32.0 | .578 |
| Adonis Medina | Bos | sp | 24 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 4 | 0 | 0 | 58.5 | .564 |
| Humberto Mejia | Col | sp | 24 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 10 | 0 | 0 | 69.0 | .565 |
| Mark Melancon | Bos | cl | 36 | 30 | 26 | .867 | 4 | .133 | 7 | 33 | 13 | .394 | 59 | 59 | 40 | 16.7 | .655 |
| Keury Mella | TB | mr | 27 | 2 | 0 | .000 | 2 | 1.000 | 0 | 40 | 18 | .450 | 29 | 29 | 6 | 22.4 | .654 |
| Conner Menez* | StL | mr | 26 | 0 | 0 | .000 | 0 | .000 | 2 | 6 | 1 | .167 | 7 | 7 | 3 | 25.3 | .554 |
| Daniel Mengden | NYM | mr | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 34 | 0 | 0 | 87.5 | .595 |
| Julian Merryweather | Bos | mr | 29 | 1 | 1 | 1.000 | 0 | .000 | 2 | 8 | 0 | .000 | 23 | 15 | 5 | 32.7 | .600 |
| Keynan Middleton | Atl | mr | 27 | 0 | 0 | .000 | 0 | .000 | 0 | 5 | 2 | .400 | 9 | 9 | 3 | 30.3 | .579 |
| Wade Miley* | Tor | sp | 34 | 0 | 0 | .000 | 0 | .000 | 0 | 1 | 0 | .000 | 16 | 2 | 0 | 67.3 | .575 |
| Andrew Miller* | Mil | mr | 36 | 7 | 4 | .571 | 2 | .286 | 15 | 20 | 5 | .250 | 45 | 45 | 10 | 17.8 | .622 |
| Tyson Miller | TB | sp | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 3 | 0 | 0 | 79.3 | .592 |
| Alec Mills | Bal | sp | 29 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 85.0 | .625 |
| Hoby Milner* | KC | mr | 30 | 5 | 2 | .400 | 3 | .600 | 2 | 23 | 10 | .435 | 34 | 34 | 18 | 27.1 | .587 |
| Tommy Milone* | Atl | sp | 34 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 25 | 0 | 0 | 79.7 | .677 |
| Mike Minor* | Sea | sp | 33 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 90.3 | .629 |
| A.J. Minter* | NYY | mr | 27 | 3 | 2 | .667 | 1 | .333 | 8 | 21 | 7 | .333 | 47 | 47 | 26 | 21.6 | .630 |
| Anthony Misiewicz* | ChW | mr | 26 | 5 | 2 | .400 | 2 | .400 | 7 | 20 | 8 | .400 | 40 | 40 | 15 | 17.5 | .653 |
| Casey Mize | Pit | sp | 24 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 18 | 0 | 0 | 82.9 | .599 |
| Frankie Montas | ChC | sp | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 90.7 | .608 |
| Rafael Montero | Mia | cl | 30 | 11 | 9 | .818 | 2 | .182 | 4 | 39 | 12 | .308 | 46 | 46 | 24 | 19.2 | .618 |
| Jordan Montgomery* | Pit | sp | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 24 | 0 | 0 | 91.2 | .659 |
| Mike Montgomery* | ChW | mr | 31 | 0 | 0 | .000 | 0 | .000 | 1 | 0 | 0 | .000 | 4 | 1 | 0 | 45.8 | .579 |
| Adrian Morejon* | SD | mr | 22 | 4 | 2 | .500 | 2 | .500 | 0 | 12 | 4 | .333 | 14 | 13 | 8 | 26.1 | .650 |
| Adam Morgan* | LAA | mr | 31 | 2 | 2 | 1.000 | 0 | .000 | 6 | 41 | 16 | .390 | 44 | 44 | 22 | 14.3 | .622 |
| Mike Morin | Det | mr | 30 | 0 | 0 | .000 | 0 | .000 | 0 | 2 | 0 | .000 | 4 | 4 | 0 | 29.0 | .569 |
| Charlie Morton | Mil | sp | 37 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 27 | 0 | 0 | 81.6 | .632 |
| Patrick Murphy | Atl | mr | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 1 | 0 | .000 | 2 | 2 | 2 | 21.0 | .571 |
| Joe Musgrove | Min | sp | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 23 | 0 | 0 | 93.0 | .628 |
| Nick Nelson | Bal | mr | 25 | 7 | 7 | 1.000 | 0 | .000 | 1 | 18 | 2 | .111 | 23 | 23 | 16 | 35.3 | .615 |
| Hector Neris | LAA | mr | 32 | 1 | 1 | 1.000 | 0 | .000 | 9 | 36 | 8 | .222 | 61 | 61 | 18 | 22.1 | .638 |
| Dovydas Neverauskas | Tor | mr | 28 | 2 | 0 | .000 | 2 | 1.000 | 1 | 24 | 11 | .458 | 25 | 25 | 6 | 23.6 | .593 |
| Jake Newberry | Mia | mr | 26 | 11 | 10 | .909 | 1 | .091 | 7 | 12 | 1 | .083 | 28 | 28 | 16 | 15.0 | .616 |
| Sean Newcomb* | Tor | sp | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 32 | 0 | 0 | 67.0 | .605 |
| Ljay Newsome | StL | sp | 24 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 13 | 1 | 0 | 72.5 | .712 |
| Juan Nicasio | Phi | mr | 34 | 0 | 0 | .000 | 0 | .000 | 0 | 1 | 1 | 1.000 | 2 | 2 | 1 | 37.5 | .627 |
| Aaron Nola | Min | sp | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 104.8 | .645 |
| Daniel Norris* | Tor | mr | 28 | 6 | 5 | .833 | 1 | .167 | 10 | 42 | 16 | .381 | 49 | 48 | 20 | 30.0 | .656 |
| Ivan Nova | KC | sp | 34 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 1 | 0 | 0 | 114.0 | .649 |
| Darren O'Day | Sea | mr | 38 | 14 | 12 | .857 | 2 | .143 | 11 | 21 | 8 | .381 | 52 | 52 | 30 | 18.0 | .615 |
| Jake Odorizzi | ChW | sp | 31 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 9 | 0 | 0 | 71.1 | .617 |
| Shohei Ohtani | Ari | dh | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 2 | 2 | 1.000 | 4 | 1 | 1 | 84.0 | .464 |
| Josh Osich* | Pit | mr | 32 | 1 | 1 | 1.000 | 0 | .000 | 4 | 10 | 4 | .400 | 31 | 31 | 12 | 24.1 | .618 |
| Roberto Osuna | Tor | mr | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 7 | 1 | .143 | 9 | 9 | 5 | 24.1 | .627 |
| Corey Oswalt | Cle | mr | 27 | 1 | 0 | .000 | 1 | 1.000 | 1 | 3 | 3 | 1.000 | 16 | 12 | 3 | 46.4 | .667 |
| Adam Ottavino | Ari | mr | 35 | 13 | 6 | .462 | 7 | .538 | 2 | 36 | 11 | .306 | 43 | 43 | 21 | 22.8 | .563 |
| Johan Oviedo | StL | sp | 23 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 15 | 0 | 0 | 81.2 | .606 |
| Chris Paddack | Mia | sp | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 24 | 0 | 0 | 86.0 | .658 |
| Emilio Pagan | StL | mr | 30 | 3 | 3 | 1.000 | 0 | .000 | 11 | 17 | 4 | .235 | 54 | 54 | 15 | 20.4 | .617 |
| Enoli Paredes | TB | mr | 25 | 3 | 1 | .333 | 1 | .333 | 4 | 39 | 14 | .359 | 46 | 46 | 7 | 25.0 | .553 |
| Blake Parker | Det | mr | 36 | 5 | 2 | .400 | 3 | .600 | 13 | 23 | 6 | .261 | 40 | 38 | 10 | 21.3 | .603 |
| Luis Patino | NYM | mr | 21 | 0 | 0 | .000 | 0 | .000 | 0 | 5 | 0 | .000 | 5 | 3 | 0 | 51.6 | .562 |
| James Paxton* | StL | sp | 32 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 20 | 0 | 0 | 84.7 | .644 |
| Joel Payamps | Mia | mr | 27 | 0 | 0 | .000 | 0 | .000 | 0 | 1 | 1 | 1.000 | 4 | 4 | 2 | 18.0 | .611 |
| Nate Pearson | NYM | sp | 24 | 1 | 0 | .000 | 0 | .000 | 1 | 13 | 6 | .462 | 24 | 12 | 1 | 57.3 | .544 |
| Felix Pena | SF | mr | 31 | 3 | 1 | .333 | 2 | .667 | 5 | 20 | 8 | .400 | 55 | 55 | 13 | 26.1 | .624 |
| Freddy Peralta | ChW | mr | 25 | 2 | 2 | 1.000 | 0 | .000 | 5 | 20 | 7 | .350 | 33 | 29 | 13 | 39.4 | .612 |
| Wandy Peralta* | Tex | mr | 29 | 1 | 0 | .000 | 1 | 1.000 | 5 | 56 | 13 | .232 | 60 | 60 | 16 | 25.1 | .620 |
| Luis Perdomo | Tor | mr | 28 | 0 | 0 | .000 | 0 | .000 | 8 | 41 | 11 | .268 | 48 | 48 | 11 | 34.6 | .580 |
| Cionel Perez* | Cle | mr | 25 | 1 | 1 | 1.000 | 0 | .000 | 2 | 13 | 6 | .462 | 21 | 21 | 6 | 19.9 | .589 |
| Martin Perez* | SD | sp | 30 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 91.8 | .606 |
| Oliver Perez* | Oak | mr | 39 | 4 | 0 | .000 | 2 | .500 | 9 | 26 | 9 | .346 | 37 | 37 | 7 | 12.0 | .631 |
| David Peterson* | SF | sp | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 27 | 0 | 0 | 98.0 | .617 |
| Yusmeiro Petit | Bos | mr | 36 | 5 | 4 | .800 | 0 | .000 | 13 | 40 | 11 | .275 | 55 | 55 | 20 | 12.8 | .637 |
| David Phelps | Pit | mr | 34 | 1 | 0 | .000 | 1 | 1.000 | 4 | 24 | 3 | .125 | 40 | 40 | 18 | 26.2 | .647 |
| Evan Phillips | NYM | mr | 26 | 4 | 2 | .500 | 2 | .500 | 2 | 12 | 4 | .333 | 24 | 24 | 10 | 24.1 | .559 |
| Michael Pineda | LAA | sp | 32 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 17 | 0 | 0 | 83.8 | .637 |
| Nick Pivetta | Atl | mr | 28 | 2 | 1 | .500 | 0 | .000 | 3 | 8 | 1 | .125 | 13 | 11 | 2 | 32.5 | .609 |
| Zach Plesac | Cin | sp | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 26 | 0 | 0 | 104.1 | .683 |
| Adam Plutko | Bos | mr | 29 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 20 | 1 | 1 | 61.6 | .637 |
| Drew Pomeranz* | NYY | mr | 32 | 6 | 4 | .667 | 2 | .333 | 9 | 24 | 0 | .000 | 47 | 47 | 20 | 24.0 | .577 |
| Cody Ponce | NYY | sp | 27 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 4 | 0 | 0 | 82.5 | .645 |
| Daniel Ponce de Leon | Hou | sp | 29 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 22 | 0 | 0 | 81.2 | .581 |
| Sean Poppen | Cin | mr | 27 | 1 | 1 | 1.000 | 0 | .000 | 0 | 4 | 1 | .250 | 8 | 8 | 7 | 21.0 | .589 |
| Rick Porcello | LAD | sp | 32 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 32 | 0 | 0 | 88.3 | .646 |
| Ryan Pressly | Mil | cl | 32 | 3 | 1 | .333 | 1 | .333 | 12 | 38 | 16 | .421 | 48 | 48 | 16 | 21.0 | .645 |
| Cal Quantrill | ChW | mr | 26 | 16 | 11 | .688 | 2 | .125 | 2 | 29 | 10 | .345 | 43 | 42 | 19 | 26.6 | .640 |
| Jose Quintana* | Mia | mr | 32 | 1 | 1 | 1.000 | 0 | .000 | 5 | 2 | 2 | 1.000 | 14 | 14 | 6 | 31.3 | .614 |
| Tanner Rainey | StL | mr | 28 | 2 | 1 | .500 | 1 | .500 | 1 | 10 | 4 | .400 | 13 | 13 | 8 | 17.9 | .657 |
| Brooks Raley* | Pit | mr | 33 | 8 | 5 | .625 | 3 | .375 | 6 | 26 | 2 | .077 | 41 | 41 | 22 | 21.7 | .617 |
| Erasmo Ramirez | Bos | mr | 31 | 2 | 1 | .500 | 0 | .000 | 3 | 10 | 1 | .100 | 21 | 21 | 2 | 56.3 | .655 |
| Nick Ramirez* | Cin | mr | 31 | 1 | 1 | 1.000 | 0 | .000 | 4 | 15 | 10 | .667 | 14 | 14 | 3 | 28.9 | .636 |
| Noe Ramirez | Mia | mr | 31 | 23 | 19 | .826 | 4 | .174 | 2 | 23 | 5 | .217 | 57 | 57 | 37 | 25.8 | .627 |
| Yohan Ramirez | KC | mr | 26 | 5 | 4 | .800 | 1 | .200 | 8 | 12 | 5 | .417 | 37 | 37 | 12 | 32.3 | .538 |
| Drew Rasmussen | NYM | mr | 25 | 2 | 0 | .000 | 2 | 1.000 | 5 | 27 | 17 | .630 | 28 | 28 | 2 | 32.6 | .589 |
| Robbie Ray* | StL | sp | 29 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 92.8 | .566 |
| Colin Rea | Sea | mr | 30 | 1 | 1 | 1.000 | 0 | .000 | 1 | 5 | 0 | .000 | 11 | 7 | 3 | 44.5 | .690 |
| Cody Reed* | ChC | mr | 28 | 0 | 0 | .000 | 0 | .000 | 2 | 10 | 5 | .500 | 12 | 12 | 3 | 35.7 | .535 |
| Sean Reid-Foley | Min | mr | 25 | 1 | 0 | .000 | 1 | 1.000 | 2 | 13 | 4 | .308 | 12 | 12 | 3 | 24.3 | .560 |
| Alex Reyes | ChW | mr | 26 | 5 | 3 | .600 | 1 | .200 | 5 | 17 | 4 | .235 | 37 | 36 | 12 | 27.8 | .559 |
| Garrett Richards | Mil | sp | 33 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 30 | 0 | 0 | 87.7 | .625 |
| Trevor Richards | KC | mr | 28 | 1 | 0 | .000 | 1 | 1.000 | 0 | 5 | 2 | .400 | 6 | 6 | 4 | 35.5 | .582 |
| Tanner Roark | Tor | sp | 34 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 32 | 0 | 0 | 78.3 | .596 |
| Hansel Robles | SD | mr | 30 | 3 | 2 | .667 | 0 | .000 | 10 | 45 | 14 | .311 | 57 | 57 | 11 | 21.9 | .584 |
| Carlos Rodon* | SF | sp | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 5 | 0 | 0 | 97.8 | .566 |
| Joely Rodriguez* | Bal | mr | 29 | 2 | 1 | .500 | 0 | .000 | 7 | 22 | 4 | .182 | 34 | 34 | 4 | 23.5 | .625 |
| Richard Rodriguez | Sea | mr | 31 | 5 | 1 | .200 | 2 | .400 | 22 | 34 | 6 | .176 | 69 | 69 | 15 | 20.1 | .645 |
| Chaz Roe | Cle | mr | 34 | 5 | 2 | .400 | 3 | .600 | 5 | 18 | 10 | .556 | 28 | 28 | 9 | 21.2 | .582 |
| Taylor Rogers* | Mia | cl | 30 | 3 | 3 | 1.000 | 0 | .000 | 6 | 17 | 4 | .235 | 22 | 22 | 8 | 14.6 | .643 |
| Trevor Rogers* | KC | sp | 23 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 19 | 0 | 0 | 95.9 | .598 |
| Tyler Rogers | Cin | mr | 30 | 10 | 8 | .800 | 2 | .200 | 9 | 34 | 11 | .324 | 59 | 59 | 20 | 22.5 | .639 |
| Jordan Romano | ChC | mr | 28 | 12 | 9 | .750 | 2 | .167 | 3 | 15 | 1 | .067 | 36 | 36 | 27 | 20.9 | .628 |
| Sal Romano | Oak | mr | 27 | 1 | 0 | .000 | 1 | 1.000 | 1 | 0 | 0 | .000 | 5 | 5 | 2 | 22.0 | .591 |
| Sergio Romo | Col | mr | 38 | 15 | 9 | .600 | 6 | .400 | 15 | 34 | 12 | .353 | 72 | 72 | 23 | 20.1 | .612 |
| Hector Rondon | Tor | mr | 33 | 1 | 0 | .000 | 1 | 1.000 | 4 | 35 | 19 | .543 | 32 | 32 | 1 | 24.4 | .614 |
| Trevor Rosenthal | ChC | cl | 31 | 18 | 14 | .778 | 4 | .222 | 5 | 32 | 10 | .313 | 52 | 52 | 30 | 18.4 | .626 |
| Ramon Rosso | KC | mr | 25 | 1 | 0 | .000 | 1 | 1.000 | 0 | 3 | 1 | .333 | 6 | 6 | 3 | 44.7 | .567 |
| Jose Ruiz | Tex | mr | 26 | 2 | 2 | 1.000 | 0 | .000 | 0 | 15 | 3 | .200 | 13 | 13 | 4 | 24.9 | .556 |
| Kyle Ryan* | SF | mr | 29 | 4 | 3 | .750 | 1 | .250 | 5 | 17 | 6 | .353 | 40 | 40 | 16 | 26.0 | .639 |
| Hyun Jin Ryu* | Ari | sp | 34 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 32 | 0 | 0 | 101.4 | .659 |
| Casey Sadler | SF | mr | 30 | 2 | 0 | .000 | 2 | 1.000 | 3 | 10 | 4 | .400 | 34 | 34 | 18 | 23.9 | .582 |
| Jeff Samardzija | Pit | sp | 36 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 9 | 0 | 0 | 83.9 | .675 |
| Anibal Sanchez | Tex | sp | 37 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 28 | 0 | 0 | 86.7 | .616 |
| Sixto Sanchez | Cle | sp | 22 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 22 | 0 | 0 | 93.5 | .637 |
| Patrick Sandoval* | Pit | sp | 24 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 10 | 0 | 0 | 82.6 | .649 |
| Dennis Santana | Hou | mr | 25 | 0 | 0 | .000 | 0 | .000 | 1 | 21 | 7 | .333 | 25 | 25 | 12 | 26.3 | .598 |
| Max Scherzer | Oak | sp | 36 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 98.6 | .629 |
| Clarke Schmidt | Phi | mr | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 9 | 0 | 0 | 92.2 | .531 |
| John Schreiber | Pit | mr | 27 | 3 | 2 | .667 | 1 | .333 | 6 | 21 | 7 | .333 | 35 | 35 | 17 | 22.5 | .646 |
| Tanner Scott* | ChC | mr | 26 | 12 | 11 | .917 | 0 | .000 | 17 | 38 | 6 | .158 | 58 | 58 | 24 | 19.2 | .638 |
| Andre Scrubb | Was | mr | 26 | 2 | 1 | .500 | 1 | .500 | 5 | 4 | 1 | .250 | 21 | 21 | 8 | 21.6 | .512 |
| Sam Selman* | StL | mr | 30 | 5 | 4 | .800 | 1 | .200 | 3 | 41 | 10 | .244 | 51 | 51 | 23 | 21.4 | .594 |
| Antonio Senzatela | Pit | sp | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 32 | 0 | 0 | 103.3 | .663 |
| Justus Sheffield* | Phi | sp | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 101.2 | .620 |
| Ryan Sherriff* | ChW | mr | 31 | 2 | 1 | .500 | 0 | .000 | 7 | 18 | 4 | .222 | 29 | 29 | 9 | 18.7 | .628 |
| Matt Shoemaker | Cle | sp | 34 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 10 | 0 | 0 | 96.0 | .629 |
| Matt Shoemaker | Sea | sp | 34 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 9 | 0 | 0 | 93.0 | .624 |
| Matt Shoemaker |   | sp | 34 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 19 | 0 | 0 | 94.6 | .627 |
| Chasen Shreve* | Bos | mr | 30 | 4 | 1 | .250 | 1 | .250 | 10 | 27 | 8 | .296 | 49 | 49 | 16 | 27.5 | .608 |
| Lucas Sims | Det | mr | 27 | 38 | 36 | .947 | 2 | .053 | 4 | 30 | 7 | .233 | 57 | 57 | 48 | 19.5 | .588 |
| Brady Singer | KC | sp | 24 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 32 | 0 | 0 | 92.2 | .608 |
| Tarik Skubal* | Sea | sp | 24 | 0 | 0 | .000 | 0 | .000 | 0 | 2 | 1 | .500 | 25 | 2 | 2 | 73.9 | .631 |
| Aaron Slegers | Mil | mr | 28 | 7 | 5 | .714 | 2 | .286 | 4 | 8 | 0 | .000 | 29 | 26 | 13 | 34.8 | .678 |
| Devin Smeltzer* | TB | mr | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 2 | 1 | .500 | 34 | 4 | 2 | 71.8 | .624 |
| Burch Smith | Sea | mr | 31 | 3 | 3 | 1.000 | 0 | .000 | 2 | 24 | 4 | .167 | 18 | 18 | 6 | 39.1 | .704 |
| Caleb Smith* | Mil | sp | 29 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 14 | 0 | 0 | 83.6 | .568 |
| Drew Smith | Phi | mr | 27 | 2 | 2 | 1.000 | 0 | .000 | 2 | 14 | 4 | .286 | 14 | 14 | 9 | 21.3 | .607 |
| Josh A. Smith | Col | mr | 33 | 3 | 1 | .333 | 2 | .667 | 0 | 12 | 1 | .083 | 28 | 27 | 12 | 30.4 | .636 |
| Riley Smith | Det | mr | 26 | 2 | 2 | 1.000 | 0 | .000 | 2 | 14 | 5 | .357 | 19 | 19 | 8 | 46.2 | .629 |
| Will Smith* | Min | mr | 31 | 2 | 0 | .000 | 2 | 1.000 | 4 | 19 | 6 | .316 | 26 | 26 | 14 | 17.3 | .635 |
| Drew Smyly* | Hou | sp | 32 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 17 | 0 | 0 | 98.0 | .639 |
| Cy Sneed | KC | mr | 28 | 1 | 0 | .000 | 1 | 1.000 | 3 | 21 | 9 | .429 | 34 | 34 | 7 | 29.9 | .608 |
| Blake Snell* | LAD | sp | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 31 | 0 | 0 | 89.4 | .655 |
| Chad Sobotka | Hou | mr | 27 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 2 | 2 | 1 | 33.0 | .561 |
| Joakim Soria | StL | mr | 37 | 22 | 19 | .864 | 3 | .136 | 0 | 16 | 2 | .125 | 49 | 49 | 39 | 20.7 | .651 |
| Mike Soroka | TB | sp | 23 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 9 | 0 | 0 | 92.0 | .565 |
| Gregory Soto* | StL | mr | 26 | 1 | 0 | .000 | 1 | 1.000 | 8 | 39 | 14 | .359 | 60 | 60 | 16 | 24.2 | .593 |
| Glenn Sparkman | Hou | mr | 29 | 1 | 0 | .000 | 1 | 1.000 | 0 | 5 | 3 | .600 | 5 | 5 | 0 | 28.2 | .716 |
| Jeffrey Springs* | TB | mr | 28 | 0 | 0 | .000 | 0 | .000 | 1 | 37 | 17 | .459 | 45 | 45 | 13 | 31.5 | .650 |
| Craig Stammen | Hou | mr | 37 | 1 | 1 | 1.000 | 0 | .000 | 8 | 38 | 9 | .237 | 55 | 55 | 9 | 23.2 | .654 |
| Cody Stashak | Cin | mr | 27 | 14 | 8 | .571 | 6 | .429 | 5 | 30 | 13 | .433 | 41 | 41 | 21 | 22.7 | .663 |
| Josh Staumont | TB | mr | 27 | 4 | 1 | .250 | 3 | .750 | 14 | 25 | 11 | .440 | 58 | 58 | 17 | 24.5 | .576 |
| Robert Stock | Cin | mr | 31 | 0 | 0 | .000 | 0 | .000 | 3 | 19 | 3 | .158 | 25 | 25 | 8 | 24.8 | .565 |
| Matt Strahm* | StL | mr | 29 | 2 | 2 | 1.000 | 0 | .000 | 2 | 28 | 5 | .179 | 42 | 42 | 19 | 26.3 | .641 |
| Stephen Strasburg | Cin | sp | 32 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 11 | 0 | 0 | 76.5 | .606 |
| Chris Stratton | StL | mr | 30 | 3 | 0 | .000 | 3 | 1.000 | 6 | 38 | 18 | .474 | 45 | 45 | 10 | 24.5 | .594 |
| Ross Stripling | Tex | sp | 31 | 0 | 0 | .000 | 0 | .000 | 0 | 3 | 0 | .000 | 27 | 2 | 0 | 81.1 | .605 |
| Pedro Strop | Col | mr | 36 | 3 | 2 | .667 | 1 | .333 | 0 | 11 | 5 | .455 | 9 | 9 | 6 | 21.1 | .532 |
| Andrew Suarez* | SF | mr | 28 | 2 | 0 | .000 | 2 | 1.000 | 1 | 16 | 7 | .438 | 19 | 19 | 3 | 26.4 | .562 |
| Jose Suarez* | Cle | sp | 23 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 6 | 0 | 0 | 73.2 | .547 |
| Ranger Suarez* | Cle | mr | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 4 | 2 | .500 | 3 | 3 | 1 | 52.3 | .541 |
| Wander Suero | Tor | mr | 29 | 4 | 3 | .750 | 1 | .250 | 7 | 40 | 12 | .300 | 59 | 59 | 17 | 24.6 | .610 |
| Cole Sulser | Mil | cl | 31 | 2 | 0 | .000 | 2 | 1.000 | 6 | 13 | 5 | .385 | 36 | 36 | 20 | 24.5 | .571 |
| Brent Suter* | LAD | mr | 31 | 8 | 6 | .750 | 2 | .250 | 9 | 46 | 8 | .174 | 56 | 56 | 25 | 31.0 | .692 |
| Masahiro Tanaka | ChW | sp | 32 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 30 | 0 | 0 | 91.8 | .660 |
| Stephen Tarpley* | Cin | mr | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 4 | 0 | .000 | 5 | 5 | 3 | 21.0 | .610 |
| Dillon Tate | Pit | mr | 27 | 10 | 9 | .900 | 1 | .100 | 3 | 12 | 2 | .167 | 28 | 28 | 14 | 22.2 | .627 |
| Blake Taylor* | ChW | mr | 25 | 12 | 12 | 1.000 | 0 | .000 | 10 | 31 | 7 | .226 | 55 | 55 | 24 | 21.5 | .592 |
| Josh Taylor* | Atl | mr | 28 | 4 | 2 | .500 | 2 | .500 | 0 | 32 | 10 | .313 | 28 | 28 | 14 | 23.2 | .565 |
| Julio Teheran | Tex | sp | 30 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 25 | 0 | 0 | 81.2 | .581 |
| Ryan Tepera | Tor | mr | 33 | 5 | 2 | .400 | 2 | .400 | 4 | 22 | 11 | .500 | 41 | 41 | 13 | 21.1 | .599 |
| Caleb Thielbar* | Mia | mr | 34 | 5 | 3 | .600 | 2 | .400 | 10 | 35 | 5 | .143 | 51 | 51 | 21 | 22.0 | .591 |
| Ryan Thompson | Oak | mr | 29 | 1 | 1 | 1.000 | 0 | .000 | 1 | 17 | 12 | .706 | 39 | 36 | 18 | 19.9 | .612 |
| Trent Thornton | SF | sp | 27 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 8 | 0 | 0 | 87.9 | .582 |
| Lewis Thorpe* | Tex | mr | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 25 | 0 | 0 | 79.4 | .577 |
| Jesus Tinoco | SF | mr | 26 | 1 | 0 | .000 | 1 | 1.000 | 1 | 10 | 2 | .200 | 15 | 15 | 4 | 24.5 | .511 |
| Josh Tomlin | Mia | mr | 36 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 27 | 0 | 0 | 84.4 | .686 |
| Justin Topa | NYY | mr | 30 | 0 | 0 | .000 | 0 | .000 | 1 | 5 | 0 | .000 | 9 | 9 | 5 | 21.0 | .651 |
| Touki Toussaint | LAA | sp | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 18 | 0 | 0 | 38.3 | .592 |
| Blake Treinen | ChC | mr | 33 | 1 | 1 | 1.000 | 0 | .000 | 13 | 52 | 17 | .327 | 60 | 60 | 9 | 27.2 | .627 |
| Andrew Triggs | Mil | mr | 32 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 3 | 0 | 0 | 69.7 | .627 |
| Lou Trivino | Atl | mr | 29 | 0 | 0 | .000 | 0 | .000 | 4 | 9 | 4 | .444 | 23 | 23 | 6 | 28.2 | .608 |
| Nick Tropeano | LAA | mr | 30 | 1 | 0 | .000 | 0 | .000 | 0 | 17 | 4 | .235 | 23 | 23 | 3 | 64.9 | .627 |
| Nik Turley* | ChW | mr | 31 | 3 | 1 | .333 | 2 | .667 | 13 | 53 | 12 | .226 | 53 | 53 | 9 | 21.2 | .619 |
| Spencer Turnbull | Bal | sp | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 89.9 | .594 |
| Duane Underwood | Atl | mr | 26 | 4 | 2 | .500 | 2 | .500 | 3 | 32 | 15 | .469 | 55 | 55 | 20 | 22.1 | .664 |
| Jose Urena | Min | sp | 29 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 17 | 0 | 0 | 93.6 | .595 |
| Julio Urias* | Bal | sp | 24 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 30 | 0 | 0 | 89.2 | .637 |
| Jose Urquidy | Sea | sp | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 17 | 0 | 0 | 94.2 | .609 |
| Cesar Valdez | Oak | cl | 36 | 3 | 1 | .333 | 2 | .667 | 5 | 31 | 16 | .516 | 29 | 29 | 7 | 23.7 | .621 |
| Framber Valdez* | Mia | sp | 27 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 30 | 0 | 0 | 100.4 | .671 |
| Phillips Valdez | Mia | mr | 29 | 3 | 2 | .667 | 1 | .333 | 3 | 27 | 5 | .185 | 41 | 41 | 13 | 31.3 | .593 |
| Vince Velasquez | Tor | sp | 29 | 0 | 0 | .000 | 0 | .000 | 0 | 4 | 2 | .500 | 25 | 3 | 0 | 74.1 | .600 |
| Justin Verlander | Hou | sp | 38 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 4 | 0 | 0 | 66.5 | .602 |
| Nick Vincent | Phi | mr | 34 | 2 | 1 | .500 | 1 | .500 | 4 | 26 | 10 | .385 | 35 | 35 | 14 | 23.2 | .631 |
| Austin Voth | KC | sp | 29 | 0 | 0 | .000 | 0 | .000 | 0 | 1 | 1 | 1.000 | 30 | 1 | 1 | 95.1 | .609 |
| Jacob Waguespack | Tor | mr | 27 | 1 | 1 | 1.000 | 0 | .000 | 0 | 6 | 1 | .167 | 10 | 10 | 4 | 42.4 | .613 |
| Adam Wainwright | Col | sp | 39 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 27 | 0 | 0 | 103.7 | .637 |
| Taijuan Walker | Hou | sp | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 93.7 | .631 |
| Tony Watson* | Sea | mr | 36 | 3 | 1 | .333 | 2 | .667 | 17 | 38 | 9 | .237 | 52 | 52 | 7 | 15.9 | .678 |
| Luke Weaver | ChW | sp | 27 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 16 | 0 | 0 | 83.8 | .610 |
| Jacob Webb | TB | mr | 27 | 0 | 0 | .000 | 0 | .000 | 1 | 20 | 4 | .200 | 24 | 24 | 9 | 22.5 | .621 |
| Logan Webb | Bos | sp | 24 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 83.5 | .597 |
| Tyler Webb* | NYY | mr | 30 | 1 | 0 | .000 | 1 | 1.000 | 7 | 20 | 5 | .250 | 44 | 44 | 11 | 21.3 | .601 |
| Ryan Weber | Cle | mr | 30 | 1 | 1 | 1.000 | 0 | .000 | 4 | 21 | 3 | .143 | 42 | 25 | 10 | 51.9 | .611 |
| Jordan Weems | Oak | mr | 28 | 0 | 0 | .000 | 0 | .000 | 1 | 1 | 1 | 1.000 | 11 | 11 | 3 | 26.5 | .562 |
| J.B. Wendelken | Was | mr | 28 | 4 | 4 | 1.000 | 0 | .000 | 10 | 23 | 4 | .174 | 36 | 36 | 12 | 20.8 | .632 |
| Zack Wheeler | SF | sp | 31 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 33 | 0 | 0 | 105.2 | .631 |
| Mitch White | Mil | mr | 26 | 0 | 0 | .000 | 0 | .000 | 3 | 0 | 0 | .000 | 5 | 5 | 0 | 17.4 | .655 |
| Kodi Whitley | Tex | mr | 26 | 0 | 0 | .000 | 0 | .000 | 3 | 11 | 4 | .364 | 21 | 21 | 3 | 20.9 | .594 |
| Rowan Wick | NYM | mr | 28 | 10 | 6 | .600 | 4 | .400 | 5 | 24 | 9 | .375 | 58 | 58 | 20 | 21.4 | .647 |
| Taylor Widener | LAD | mr | 26 | 2 | 1 | .500 | 1 | .500 | 2 | 16 | 3 | .188 | 23 | 23 | 7 | 42.0 | .586 |
| Brad Wieck* | Oak | mr | 29 | 0 | 0 | .000 | 0 | .000 | 1 | 1 | 0 | .000 | 6 | 6 | 1 | 18.2 | .615 |
| Devin Williams | NYY | mr | 26 | 41 | 38 | .927 | 3 | .073 | 0 | 19 | 9 | .474 | 52 | 52 | 46 | 17.5 | .648 |
| Taylor Williams | Det | cl | 29 | 0 | 0 | .000 | 0 | .000 | 1 | 14 | 2 | .143 | 14 | 14 | 8 | 15.9 | .635 |
| Trevor Williams | LAD | sp | 29 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 5 | 0 | 0 | 89.8 | .608 |
| Bryse Wilson | Ari | mr | 23 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 8 | 3 | 1 | 81.9 | .576 |
| Justin Wilson* | Mil | mr | 33 | 4 | 2 | .500 | 0 | .000 | 10 | 27 | 7 | .259 | 56 | 56 | 25 | 20.6 | .605 |
| Dan Winkler | Tex | mr | 31 | 13 | 12 | .923 | 1 | .077 | 2 | 23 | 3 | .130 | 44 | 44 | 30 | 20.7 | .609 |
| Matt Wisler | Sea | mr | 28 | 1 | 1 | 1.000 | 0 | .000 | 10 | 33 | 6 | .182 | 54 | 43 | 12 | 34.2 | .590 |
| Nick Wittgren | Was | mr | 30 | 2 | 2 | 1.000 | 0 | .000 | 4 | 19 | 8 | .421 | 49 | 49 | 17 | 24.3 | .656 |
| Asher Wojciechowski | Ari | sp | 32 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 24 | 0 | 0 | 85.8 | .604 |
| Jake Woodford | Pit | mr | 24 | 1 | 0 | .000 | 1 | 1.000 | 1 | 1 | 0 | .000 | 15 | 15 | 6 | 27.6 | .662 |
| Brandon Woodruff | Cin | sp | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 38 | 0 | 0 | 102.1 | .645 |
| Brandon Workman | Col | cl | 32 | 1 | 0 | .000 | 1 | 1.000 | 2 | 14 | 9 | .643 | 16 | 16 | 6 | 22.4 | .610 |
| Kyle Wright | TB | sp | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 25 | 0 | 0 | 83.3 | .584 |
| Miguel Yajure | LAA | mr | 23 | 1 | 1 | 1.000 | 0 | .000 | 0 | 8 | 2 | .250 | 13 | 13 | 1 | 65.8 | .559 |
| Shun Yamaguchi | TB | mr | 33 | 0 | 0 | .000 | 0 | .000 | 1 | 31 | 9 | .290 | 40 | 40 | 12 | 33.6 | .567 |
| Ryan Yarbrough* | LAA | sp | 29 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 29 | 0 | 0 | 84.9 | .672 |
| Eric Yardley | Bos | mr | 30 | 6 | 6 | 1.000 | 0 | .000 | 12 | 18 | 1 | .056 | 45 | 45 | 20 | 17.2 | .612 |
| Huascar Ynoa | Bos | sp | 23 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 20 | 0 | 0 | 61.8 | .596 |
| Alex Young* | Atl | mr | 27 | 0 | 0 | .000 | 0 | .000 | 0 | 3 | 3 | 1.000 | 13 | 1 | 1 | 75.3 | .625 |
| T.J. Zeuch | Atl | mr | 25 | 0 | 0 | .000 | 0 | .000 | 0 | 7 | 2 | .286 | 6 | 4 | 3 | 46.3 | .626 |
| Kyle Zimmer | ChW | mr | 29 | 28 | 24 | .857 | 4 | .143 | 1 | 28 | 7 | .250 | 47 | 47 | 35 | 22.0 | .616 |
| Bruce Zimmermann* | StL | sp | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 1 | 0 | .000 | 6 | 3 | 1 | 45.3 | .577 |
| Jordan Zimmermann | Cle | sp | 35 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 6 | 0 | 0 | 91.5 | .596 |
| Tyler Zuber | Atl | mr | 26 | 6 | 1 | .167 | 4 | .667 | 17 | 42 | 14 | .333 | 69 | 69 | 13 | 22.8 | .522 |