| NAME | SEAS | IP | ERA | WHIP | FIP | SO | K/9 | H/9 | BB/9 | K/BB | SEASON | TM | G | W | L | W% | GS | CG | SHO | SV | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | HR/9 | K% | BB% | BABIP | RA | ERA- | FIP- | PRAA | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | G. Kirby | 1 | 130.0 | 3.39 | 1.21 | 2.98 | 133 | 9.21 | 9.35 | 1.52 | 6.05 | 2022 |  SEA | 25 | 8 | 5 | .615 | 25 | 0 | 0 | 0 | 135 | 49 | 54 | 13 | 22 | 5 | 0 | 0 | 542 | 4 | 0.90 | 24.5 | 4.1 | .331 | 3.74 | 91 | 78 | 12.3 |
| 2 | | G. Kirby | 1 | 190.2 | 3.35 | 1.04 | 3.34 | 172 | 8.12 | 8.45 | 0.90 | 9.05 | 2023 | SEA | 31 | 12 | 10 | .545 | 31 | 1 | 0 | 0 | 179 | 71 | 74 | 22 | 19 | 6 | 0 | 1 | 757 | 1 | 1.04 | 22.7 | 2.5 | .292 | 3.49 | 83 | 81 | 16.7 |
| 3 | | G. Kirby | 1 | 191.0 | 3.53 | 1.07 | 3.25 | 179 | 8.43 | 8.53 | 1.08 | 7.78 | 2024 | SEA | 33 | 14 | 11 | .560 | 33 | 0 | 0 | 0 | 181 | 75 | 82 | 22 | 23 | 7 | 0 | 0 | 778 | 5 | 1.04 | 23.0 | 3.0 | .291 | 3.86 | 94 | 83 | 14.5 |
| 4 | | G. Kirby | 1 | 126.0 | 4.21 | 1.19 | 3.36 | 137 | 9.79 | 8.64 | 2.07 | 4.72 | 2025 | SEA | 23 | 10 | 8 | .556 | 23 | 0 | 0 | 0 | 121 | 59 | 60 | 15 | 29 | 7 | 0 | 0 | 524 | 3 | 1.07 | 26.1 | 5.5 | .315 | 4.29 | 110 | 84 | 9.2 |
| Total | 4 | 637.2 | 3.58 | 1.11 | 3.25 | 621 | 8.76 | 8.69 | 1.31 | 6.68 | 112 | 44 | 34 | .564 | 112 | 1 | 0 | 0 | 616 | 254 | 270 | 72 | 93 | 25 | 0 | 1 | 2,601 | 13 | 1.02 | 23.9 | 3.6 | .304 | 3.81 | 93 | 82 | 52.6 |
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