George Kirby is 2-4 with an ERA of 5.49 and 68 strikeouts in 12 appearances in the regular-season and playoffs since August 16, 2025.
| NAME | DATE | TM | OPP | DEC | GS | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | G. Kirby | 8/17/2025 |  SEA | @ |  NYM | L | 1 | 13.50 | 4 | 0 | 0 | 0 | 4.2 | 12 | 7 | 7 | 1 | 3 | 0 | 0 | 0 | 28 | 0 |
| 2 | | G. Kirby | 8/23/2025 | SEA | vs |  ATH | 1 | 1.50 | 3 | 0 | 0 | 0 | 6.0 | 4 | 1 | 1 | 0 | 3 | 0 | 0 | 0 | 25 | 1 | |
| 3 | | G. Kirby | 8/29/2025 | SEA | @ |  CLE | 1 | 2.57 | 6 | 0 | 0 | 0 | 7.0 | 6 | 2 | 2 | 2 | 0 | 1 | 0 | 0 | 28 | 0 | |
| 4 | | G. Kirby | 9/3/2025 | SEA | @ |  TBR | L | 1 | 31.50 | 1 | 0 | 0 | 0 | 2.0 | 10 | 7 | 8 | 0 | 0 | 1 | 0 | 0 | 17 | 0 |
| 5 | | G. Kirby | 9/9/2025 | SEA | vs |  STL | 1 | 6.75 | 2 | 0 | 0 | 0 | 4.0 | 7 | 3 | 3 | 0 | 2 | 0 | 0 | 0 | 20 | 0 | |
| 6 | | G. Kirby | 9/14/2025 | SEA | vs |  LAA | W | 1 | 2.84 | 14 | 0 | 0 | 0 | 6.1 | 3 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | 22 | 0 |
| 7 | | G. Kirby | 9/20/2025 | SEA | @ |  HOU | W | 1 | 0.00 | 7 | 0 | 0 | 0 | 6.0 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 22 | 0 |
| 8 | | G. Kirby | 9/26/2025 | SEA | vs |  LAD | L | 1 | 3.60 | 10 | 0 | 0 | 0 | 5.0 | 3 | 2 | 2 | 1 | 1 | 1 | 0 | 0 | 20 | 0 |
| 9 | | G. Kirby | 10/4/2025 | SEA | vs |  DET | 1 | 3.60 | 8 | 0 | 0 | 0 | 5.0 | 6 | 2 | 2 | 1 | 1 | 0 | 0 | 0 | 22 | 0 | |
| 10 | | G. Kirby | 10/10/2025 | SEA | vs | DET | 1 | 1.80 | 6 | 0 | 0 | 0 | 5.0 | 3 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 18 | 0 | |
| 11 | | G. Kirby | 10/15/2025 | SEA | vs |  TOR | L | 1 | 18.00 | 4 | 0 | 0 | 0 | 4.0 | 8 | 8 | 8 | 3 | 2 | 0 | 0 | 0 | 22 | 1 |
| 12 | | G. Kirby | 10/20/2025 | SEA | @ | TOR | 1 | 2.25 | 3 | 0 | 0 | 0 | 4.0 | 4 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 17 | 0 | |
| Total | 12 | 5.49 | 68 | 0 | 0 | 0 | 59.0 | 71 | 36 | 37 | 10 | 13 | 4 | 0 | 0 | 261 | 2 |
Some of the information used here was obtained free of charge from Retrosheet.
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