Interpreted as:
best with a minimum of 0.5 IP per team game pitchers for red so this regular season| NAME | ERA | SEASON | TM | G | W | L | W% | GS | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | WHIP | BABIP | RA | ERA- | FIP | FIP- | H/9 | PRAA | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | G. Crochet | 2.20 | 2025 |  BOS | 16 | 7 | 4 | .636 | 16 | 125 | 0 | 0 | 0 | 102.1 | 77 | 25 | 28 | 9 | 28 | 0 | 0 | 0 | 406 | 2 | 10.99 | 2.46 | 4.46 | 0.79 | 30.8 | 6.9 | 1.03 | .279 | 2.46 | 52 | 2.59 | 63 | 6.77 | 17.3 |
| 2 |  | B. Bello | 3.31 | 2025 | BOS | 12 | 3 | 2 | .600 | 12 | 51 | 0 | 0 | 0 | 65.1 | 63 | 24 | 29 | 7 | 29 | 4 | 0 | 0 | 284 | 0 | 7.03 | 3.99 | 1.76 | 0.96 | 18.0 | 10.2 | 1.41 | .290 | 3.99 | 78 | 4.41 | 107 | 8.68 | -2.1 |
| 3 | | G. Whitlock | 3.60 | 2025 | BOS | 29 | 5 | 1 | .833 | 0 | 49 | 0 | 0 | 1 | 40.0 | 31 | 16 | 17 | 2 | 19 | 3 | 5 | 1 | 169 | 3 | 11.03 | 4.27 | 2.58 | 0.45 | 29.0 | 11.2 | 1.25 | .302 | 3.83 | 85 | 2.92 | 71 | 6.98 | 5.3 |
| 4 | | S. Newcomb | 3.95 | 2025 | BOS | 12 | 0 | 4 | .000 | 5 | 41 | 0 | 0 | 0 | 41.0 | 55 | 18 | 24 | 3 | 17 | 2 | 5 | 0 | 190 | 2 | 9.00 | 3.73 | 2.41 | 0.66 | 21.6 | 8.9 | 1.76 | .409 | 5.27 | 93 | 3.41 | 83 | 12.07 | 3.2 |
| 5 | | H. Dobbins | 4.10 | 2025 | BOS | 12 | 4 | 1 | .800 | 10 | 43 | 0 | 0 | 0 | 59.1 | 59 | 27 | 29 | 6 | 16 | 2 | 0 | 1 | 248 | 0 | 6.52 | 2.43 | 2.69 | 0.91 | 17.3 | 6.5 | 1.26 | .293 | 4.40 | 96 | 3.84 | 93 | 8.95 | 1.8 |
| 6 | | L. Giolito | 4.53 | 2025 | BOS | 10 | 3 | 1 | .750 | 10 | 46 | 0 | 0 | 0 | 51.2 | 54 | 26 | 29 | 8 | 17 | 0 | 0 | 0 | 217 | 1 | 8.01 | 2.96 | 2.71 | 1.39 | 21.2 | 7.8 | 1.37 | .315 | 5.05 | 107 | 4.29 | 104 | 9.41 | -0.9 |
| 7 |  | W. Buehler | 6.29 | 2025 | BOS | 13 | 5 | 5 | .500 | 13 | 56 | 0 | 0 | 0 | 63.0 | 70 | 44 | 46 | 13 | 29 | 8 | 0 | 0 | 289 | 0 | 8.00 | 4.14 | 1.93 | 1.86 | 19.4 | 10.0 | 1.57 | .311 | 6.57 | 148 | 5.73 | 139 | 10.00 | -11.2 |
| 8 | | T. Houck | 8.04 | 2025 | BOS | 9 | 0 | 3 | .000 | 9 | 32 | 0 | 0 | 0 | 43.2 | 57 | 39 | 41 | 10 | 17 | 5 | 0 | 0 | 203 | 2 | 6.60 | 3.50 | 1.88 | 2.06 | 15.8 | 8.4 | 1.69 | .338 | 8.45 | 189 | 6.09 | 148 | 11.75 | -9.5 |
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