Team fielding -- 2020 Seattle Mariners
Regular season -- as of 9/26/2020
| Primary |
| Pos | S | Name | G | GS | INN | PO | A | E | DP | TC | PCT | PB | SB | CS | SB% | PK |
| p | | Mike Minor | 33 | 33 | 213.3 | 6 | 20 | 0 | 2 | 26 | 1.000 | | 9 | 3 | .750 | 1 |
| | f | Jose Urquidy | 13 | 7 | 67.0 | 7 | 12 | 0 | 1 | 19 | 1.000 | | 1 | 3 | .250 | 0 |
| | | Matt Wisler | 49 | 8 | 89.3 | 8 | 9 | 0 | 1 | 17 | 1.000 | | 3 | 1 | .750 | 1 |
| | | Erick Fedde | 18 | 18 | 110.7 | 2 | 14 | 0 | 1 | 16 | 1.000 | | 3 | 0 | 1.000 | 0 |
| | | Miguel Castro | 58 | 0 | 80.0 | 6 | 8 | 1 | 1 | 15 | .933 | | 4 | 1 | .800 | 1 |
| | | Matt Harvey | 15 | 15 | 70.7 | 3 | 9 | 1 | 0 | 13 | .923 | | 1 | 0 | 1.000 | 0 |
| | f | Nick Margevicius | 17 | 16 | 80.3 | 5 | 8 | 0 | 0 | 13 | 1.000 | | 7 | 1 | .875 | 0 |
| | | Hector Velazquez | 22 | 16 | 90.7 | 5 | 6 | 2 | 1 | 13 | .846 | | 2 | 0 | 1.000 | 0 |
| | | Wade LeBlanc | 15 | 15 | 85.3 | 4 | 7 | 1 | 0 | 12 | .917 | | 1 | 0 | 1.000 | 0 |
| | f | Matt Shoemaker | 6 | 6 | 41.0 | 4 | 7 | 1 | 0 | 12 | .917 | | 1 | 1 | .500 | 0 |
| | | Richard Rodriguez | 60 | 0 | 67.3 | 6 | 5 | 0 | 1 | 11 | 1.000 | | 5 | 1 | .833 | 0 |
| | f | Tyler Glasnow | 15 | 15 | 91.7 | 4 | 5 | 0 | 0 | 9 | 1.000 | | 9 | 0 | 1.000 | 0 |
| | | Jerry Blevins | 49 | 0 | 41.7 | 3 | 5 | 0 | 0 | 8 | 1.000 | | 2 | 1 | .667 | 1 |
| | | Tommy Kahnle | 59 | 0 | 64.3 | 2 | 5 | 0 | 1 | 7 | 1.000 | | 1 | 2 | .333 | 0 |
| | | Zack Littell | 31 | 0 | 39.3 | 3 | 4 | 0 | 0 | 7 | 1.000 | | 1 | 0 | 1.000 | 0 |
| | | Tayron Guerrero | 44 | 0 | 54.7 | 4 | 2 | 0 | 0 | 6 | 1.000 | | 1 | 0 | 1.000 | 0 |
| | f | Kohl Stewart | 12 | 3 | 46.0 | 4 | 2 | 0 | 0 | 6 | 1.000 | | 3 | 2 | .600 | 0 |
| | | Tony Sipp | 41 | 0 | 37.3 | 1 | 4 | 0 | 0 | 5 | 1.000 | | 1 | 1 | .500 | 0 |
| | f | Kyle Wright | 8 | 5 | 29.7 | 1 | 2 | 0 | 0 | 3 | 1.000 | | 3 | 1 | .750 | 0 |
| | f | Jon Duplantier | 5 | 5 | 20.3 | 1 | 1 | 0 | 1 | 2 | 1.000 | | 0 | 0 | .000 | 0 |
| | f | Darren O'Day | 8 | 0 | 7.0 | 1 | 0 | 0 | 0 | 1 | 1.000 | | 0 | 0 | .000 | 0 |
| | | Total | 578 | 162 | 1427.7 | 80 | 135 | 6 | 10 | 221 | .973 | | 58 | 18 | .763 | 4 |
| | | | | | | | | | | | | | | | | |
| c | | Jorge Alfaro | 139 | 139 | 1233.0 | 1162 | 34 | 11 | 4 | 1207 | .991 | 14 | 41 | 15 | .732 | 1 |
| | | Kyle Farmer | 24 | 23 | 194.7 | 175 | 4 | 2 | 0 | 181 | .989 | 3 | 17 | 3 | .850 | 0 |
| | | Total | 163 | 162 | 1427.7 | 1337 | 38 | 13 | 4 | 1388 | .991 | 17 | 58 | 18 | .763 | 1 |
| | | | | | | | | | | | | | | | | |
| 1b | | Pete Alonso | 161 | 161 | 1407.7 | 1318 | 82 | 10 | 147 | 1410 | .993 | | | | | |
| | | Miguel Cabrera | 2 | 1 | 9.0 | 9 | 1 | 0 | 2 | 10 | 1.000 | | | | | |
| | | Derek Dietrich | 1 | 0 | 5.0 | 3 | 1 | 0 | 1 | 4 | 1.000 | | | | | |
| | | Charlie Culberson | 1 | 0 | 6.0 | 3 | 0 | 0 | 0 | 3 | 1.000 | | | | | |
| | | Total | 165 | 162 | 1427.7 | 1333 | 84 | 10 | 150 | 1427 | .993 | | | | | |
| | | | | | | | | | | | | | | | | |
| 2b | | Derek Dietrich | 85 | 75 | 677.0 | 140 | 263 | 3 | 71 | 406 | .993 | | | | | |
| | | Kyle Farmer | 42 | 39 | 339.7 | 68 | 113 | 4 | 28 | 185 | .978 | | | | | |
| | | DJ LeMahieu | 33 | 29 | 245.3 | 45 | 90 | 3 | 23 | 138 | .978 | | | | | |
| | f | Nick Solak | 12 | 12 | 101.0 | 17 | 28 | 1 | 7 | 46 | .978 | | | | | |
| | | Pablo Reyes | 10 | 7 | 64.7 | 11 | 23 | 0 | 8 | 34 | 1.000 | | | | | |
| | | Total | 182 | 162 | 1427.7 | 281 | 517 | 11 | 137 | 809 | .986 | | | | | |
| | | | | | | | | | | | | | | | | |
| 3b | | DJ LeMahieu | 117 | 116 | 1029.0 | 64 | 212 | 5 | 28 | 281 | .982 | | | | | |
| | f | Nick Solak | 24 | 24 | 200.3 | 19 | 43 | 1 | 2 | 63 | .984 | | | | | |
| | f | Christian Arroyo | 12 | 12 | 100.7 | 8 | 17 | 3 | 2 | 28 | .893 | | | | | |
| | | Kyle Farmer | 14 | 10 | 93.0 | 7 | 19 | 2 | 1 | 28 | .929 | | | | | |
| | f | Ian Happ | 2 | 0 | 4.7 | 0 | 1 | 0 | 0 | 1 | 1.000 | | | | | |
| | | Total | 169 | 162 | 1427.7 | 98 | 292 | 11 | 33 | 401 | .973 | | | | | |
| | | | | | | | | | | | | | | | | |
| ss | | Addison Russell | 87 | 85 | 764.7 | 106 | 274 | 25 | 57 | 405 | .938 | | | | | |
| | | Charlie Culberson | 68 | 59 | 506.0 | 72 | 192 | 4 | 39 | 268 | .985 | | | | | |
| | | Pablo Reyes | 20 | 18 | 157.0 | 17 | 45 | 5 | 7 | 67 | .925 | | | | | |
| | | Total | 175 | 162 | 1427.7 | 195 | 511 | 34 | 103 | 740 | .954 | | | | | |
| | | | | | | | | | | | | | | | | |
| lf | | Melky Cabrera | 124 | 124 | 1046.3 | 205 | 10 | 2 | 0 | 217 | .991 | | | | | |
| | | Derek Dietrich | 31 | 31 | 260.0 | 41 | 2 | 0 | 0 | 43 | 1.000 | | | | | |
| | | Pablo Reyes | 7 | 3 | 36.3 | 14 | 0 | 0 | 0 | 14 | 1.000 | | | | | |
| | | Charlie Culberson | 33 | 4 | 73.0 | 12 | 0 | 0 | 0 | 12 | 1.000 | | | | | |
| | f | J.B. Shuck | 7 | 0 | 9.0 | 4 | 0 | 0 | 0 | 4 | 1.000 | | | | | |
| | | Curtis Granderson | 1 | 0 | 1.0 | 1 | 0 | 0 | 0 | 1 | 1.000 | | | | | |
| | f | Ian Happ | 1 | 0 | 2.0 | 0 | 0 | 0 | 0 | 0 | .000 | | | | | |
| | | Total | 204 | 162 | 1427.7 | 277 | 12 | 2 | 0 | 291 | .993 | | | | | |
| | | | | | | | | | | | | | | | | |
| cf | | Adam Engel | 77 | 72 | 630.7 | 189 | 5 | 7 | 0 | 201 | .965 | | | | | |
| | f | Ian Happ | 60 | 57 | 491.0 | 119 | 6 | 1 | 1 | 126 | .992 | | | | | |
| | f | J.B. Shuck | 16 | 16 | 138.0 | 35 | 2 | 0 | 0 | 37 | 1.000 | | | | | |
| | f | Jason Martin | 21 | 17 | 157.0 | 32 | 3 | 0 | 0 | 35 | 1.000 | | | | | |
| | | Pablo Reyes | 8 | 0 | 11.0 | 2 | 0 | 0 | 0 | 2 | 1.000 | | | | | |
| | | Total | 182 | 162 | 1427.7 | 377 | 16 | 8 | 1 | 401 | .980 | | | | | |
| | | | | | | | | | | | | | | | | |
| rf | | Curtis Granderson | 77 | 75 | 656.0 | 145 | 4 | 0 | 0 | 149 | 1.000 | | | | | |
| | | Alex Dickerson | 73 | 71 | 631.3 | 135 | 3 | 0 | 0 | 138 | 1.000 | | | | | |
| | | Melky Cabrera | 12 | 12 | 101.7 | 17 | 1 | 0 | 0 | 18 | 1.000 | | | | | |
| | | Pablo Reyes | 7 | 3 | 27.7 | 5 | 0 | 0 | 0 | 5 | 1.000 | | | | | |
| | f | Ian Happ | 2 | 1 | 10.0 | 3 | 0 | 0 | 0 | 3 | 1.000 | | | | | |
| | | Adam Engel | 1 | 0 | 1.0 | 0 | 0 | 0 | 0 | 0 | .000 | | | | | |
| | | Total | 172 | 162 | 1427.7 | 305 | 8 | 0 | 0 | 313 | 1.000 | | | | | |
| | | | | | | | | | | | | | | | | |
| | | Total | 162 | 162 | 1427.7 | 4283 | 1613 | 95 | 158 | 5991 | .984 | 17 | | | | |