Team fielding -- 2021 Boston Red Sox
Regular season -- as of 10/9/2021
| Primary |
| Pos | S | Name | G | GS | INN | PO | A | E | DP | TC | PCT | PB | SB | CS | SB% | PK |
| p | | Logan Webb | 33 | 33 | 161.0 | 11 | 15 | 0 | 1 | 26 | 1.000 | | 8 | 0 | 1.000 | 0 |
| | | Kwang Hyun Kim | 25 | 23 | 156.0 | 8 | 17 | 0 | 4 | 25 | 1.000 | | 1 | 2 | .333 | 1 |
| | | Dakota Hudson | 25 | 25 | 140.0 | 2 | 20 | 1 | 2 | 23 | .957 | | 0 | 7 | .000 | 3 |
| | | Cristian Javier | 33 | 30 | 161.7 | 9 | 10 | 2 | 0 | 21 | .905 | | 1 | 2 | .333 | 0 |
| | f | Adam Plutko | 20 | 19 | 90.3 | 9 | 10 | 0 | 1 | 19 | 1.000 | | 2 | 2 | .500 | 1 |
| | | Adam Kolarek | 59 | 0 | 69.7 | 6 | 10 | 0 | 0 | 16 | 1.000 | | 3 | 1 | .750 | 0 |
| | f | Huascar Ynoa | 20 | 20 | 70.3 | 4 | 11 | 0 | 1 | 15 | 1.000 | | 3 | 0 | 1.000 | 0 |
| | | Erasmo Ramirez | 21 | 0 | 89.0 | 6 | 7 | 1 | 0 | 14 | .929 | | 1 | 3 | .250 | 0 |
| | | Mark Melancon | 59 | 0 | 66.7 | 4 | 9 | 0 | 0 | 13 | 1.000 | | 1 | 1 | .500 | 0 |
| | | Chasen Shreve | 49 | 0 | 86.0 | 2 | 9 | 0 | 2 | 11 | 1.000 | | 3 | 0 | 1.000 | 0 |
| | | Eric Yardley | 45 | 0 | 51.7 | 1 | 10 | 0 | 0 | 11 | 1.000 | | 1 | 0 | 1.000 | 0 |
| | | Scott Barlow | 80 | 0 | 87.3 | 3 | 6 | 1 | 0 | 10 | .900 | | 6 | 1 | .857 | 0 |
| | f | Jalen Beeks | 33 | 0 | 68.7 | 7 | 3 | 0 | 0 | 10 | 1.000 | | 1 | 0 | 1.000 | 0 |
| | | Chris Martin | 27 | 0 | 41.0 | 5 | 2 | 1 | 0 | 8 | .875 | | 1 | 0 | 1.000 | 0 |
| | f | Adonis Medina | 4 | 4 | 14.3 | 3 | 5 | 0 | 1 | 8 | 1.000 | | 0 | 1 | .000 | 0 |
| | | Yusmeiro Petit | 55 | 0 | 48.7 | 3 | 4 | 1 | 0 | 8 | .875 | | 0 | 0 | .000 | 0 |
| | f | Julian Merryweather | 23 | 8 | 43.7 | 2 | 3 | 2 | 0 | 7 | .714 | | 0 | 0 | .000 | 0 |
| | f | Rob Kaminsky | 11 | 0 | 9.3 | 0 | 1 | 1 | 0 | 2 | .500 | | 0 | 0 | .000 | 0 |
| | | Total | 622 | 162 | 1455.3 | 85 | 152 | 10 | 12 | 247 | .960 | | 32 | 20 | .615 | 5 |
| | | | | | | | | | | | | | | | | |
| c | | Salvador Perez | 110 | 109 | 976.0 | 861 | 28 | 0 | 0 | 889 | 1.000 | 0 | 14 | 12 | .538 | 2 |
| | | Chadwick Tromp | 48 | 42 | 390.3 | 362 | 18 | 2 | 1 | 382 | .995 | 5 | 16 | 7 | .696 | 2 |
| | f | Ryan Lavarnway | 11 | 11 | 89.0 | 78 | 2 | 0 | 0 | 80 | 1.000 | 0 | 2 | 1 | .667 | 0 |
| | | Total | 169 | 162 | 1455.3 | 1301 | 48 | 2 | 1 | 1351 | .999 | 5 | 32 | 20 | .615 | 4 |
| | | | | | | | | | | | | | | | | |
| 1b | | Wilmer Flores | 69 | 69 | 615.3 | 661 | 32 | 1 | 69 | 694 | .999 | | | | | |
| | | Darin Ruf | 46 | 45 | 398.0 | 381 | 25 | 4 | 42 | 410 | .990 | | | | | |
| | | Michael Chavis | 46 | 39 | 359.0 | 359 | 22 | 1 | 53 | 382 | .997 | | | | | |
| | | Daniel Vogelbach | 10 | 9 | 80.0 | 81 | 8 | 0 | 5 | 89 | 1.000 | | | | | |
| | | Salvador Perez | 2 | 0 | 3.0 | 3 | 0 | 0 | 1 | 3 | 1.000 | | | | | |
| | | Total | 173 | 162 | 1455.3 | 1485 | 87 | 6 | 170 | 1578 | .996 | | | | | |
| | | | | | | | | | | | | | | | | |
| 2b | | Wilmer Flores | 80 | 77 | 707.0 | 133 | 275 | 5 | 77 | 413 | .988 | | | | | |
| | | Luis Arraez | 69 | 69 | 606.3 | 130 | 246 | 7 | 61 | 383 | .982 | | | | | |
| | | Michael Chavis | 14 | 12 | 117.0 | 19 | 42 | 0 | 9 | 61 | 1.000 | | | | | |
| | | Yolmer Sanchez | 3 | 3 | 13.0 | 1 | 3 | 0 | 0 | 4 | 1.000 | | | | | |
| | | Chad Pinder | 2 | 1 | 12.0 | 0 | 3 | 0 | 1 | 3 | 1.000 | | | | | |
| | | Total | 168 | 162 | 1455.3 | 283 | 569 | 12 | 148 | 864 | .986 | | | | | |
| | | | | | | | | | | | | | | | | |
| 3b | | J.D. Davis | 107 | 106 | 949.3 | 51 | 217 | 9 | 26 | 277 | .968 | | | | | |
| | | Chad Pinder | 56 | 55 | 496.0 | 30 | 96 | 4 | 12 | 130 | .969 | | | | | |
| | | David Fletcher | 1 | 1 | 9.0 | 1 | 2 | 0 | 0 | 3 | 1.000 | | | | | |
| | | Yolmer Sanchez | 1 | 0 | 1.0 | 0 | 0 | 0 | 0 | 0 | .000 | | | | | |
| | | Total | 165 | 162 | 1455.3 | 82 | 315 | 13 | 38 | 410 | .968 | | | | | |
| | | | | | | | | | | | | | | | | |
| ss | | David Fletcher | 139 | 139 | 1248.3 | 172 | 523 | 14 | 110 | 709 | .980 | | | | | |
| | | Yolmer Sanchez | 23 | 23 | 184.0 | 21 | 70 | 3 | 10 | 94 | .968 | | | | | |
| | | Chad Pinder | 6 | 0 | 23.0 | 2 | 5 | 0 | 1 | 7 | 1.000 | | | | | |
| | | Total | 168 | 162 | 1455.3 | 195 | 598 | 17 | 121 | 810 | .979 | | | | | |
| | | | | | | | | | | | | | | | | |
| lf | f | Bryan Reynolds | 62 | 56 | 497.0 | 98 | 2 | 5 | 0 | 105 | .952 | | | | | |
| | | Robbie Grossman | 55 | 52 | 475.3 | 96 | 2 | 0 | 0 | 98 | 1.000 | | | | | |
| | | J.D. Davis | 37 | 37 | 328.0 | 61 | 0 | 1 | 0 | 62 | .984 | | | | | |
| | | Michael Chavis | 12 | 9 | 87.0 | 20 | 0 | 0 | 0 | 20 | 1.000 | | | | | |
| | | Darin Ruf | 4 | 4 | 35.0 | 8 | 0 | 0 | 0 | 8 | 1.000 | | | | | |
| | | Chad Pinder | 5 | 4 | 33.0 | 3 | 0 | 0 | 0 | 3 | 1.000 | | | | | |
| | | Total | 175 | 162 | 1455.3 | 286 | 4 | 6 | 0 | 296 | .980 | | | | | |
| | | | | | | | | | | | | | | | | |
| cf | | Mike Yastrzemski | 146 | 146 | 1302.3 | 312 | 11 | 1 | 0 | 324 | .997 | | | | | |
| | f | Bryan Reynolds | 16 | 11 | 112.0 | 27 | 1 | 2 | 0 | 30 | .933 | | | | | |
| | | Robbie Grossman | 4 | 4 | 32.0 | 9 | 0 | 0 | 0 | 9 | 1.000 | | | | | |
| | | Chad Pinder | 1 | 1 | 9.0 | 1 | 0 | 0 | 0 | 1 | 1.000 | | | | | |
| | | Total | 167 | 162 | 1455.3 | 349 | 12 | 3 | 0 | 364 | .992 | | | | | |
| | | | | | | | | | | | | | | | | |
| rf | | Austin Slater | 89 | 87 | 785.3 | 160 | 5 | 2 | 0 | 167 | .988 | | | | | |
| | | Darin Ruf | 67 | 66 | 594.0 | 123 | 3 | 3 | 0 | 129 | .977 | | | | | |
| | | Robbie Grossman | 10 | 9 | 76.0 | 17 | 2 | 0 | 0 | 19 | 1.000 | | | | | |
| | | Total | 166 | 162 | 1455.3 | 300 | 10 | 5 | 0 | 315 | .984 | | | | | |
| | | | | | | | | | | | | | | | | |
| | | Total | 162 | 162 | 1455.3 | 4366 | 1795 | 74 | 176 | 6235 | .988 | 5 | | | | |