Jack Flaherty was 2-5 with an ERA of 5.36 and 46 strikeouts in 10 appearances in the postseason in his career.
| NAME | SEASON | TM | G | W | L | W% | GS | ERA | 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 |  | J. Flaherty | 2019 |  STL | 3 | 1 | 2 | .333 | 3 | 4.24 | 22 | 0 | 0 | 0 | 17.0 | 17 | 8 | 8 | 2 | 4 | 1 | 0 | 0 | 72 | 3 | 11.65 | 2.12 | 5.50 | 1.06 | 30.6 | 5.6 | 1.24 | .349 | 4.24 | 9.00 | ||||
| 2 | | J. Flaherty | 2020 | STL | 1 | 0 | 1 | .000 | 1 | 1.50 | 8 | 0 | 0 | 0 | 6.0 | 6 | 1 | 1 | 0 | 2 | 0 | 0 | 0 | 26 | 0 | 12.00 | 3.00 | 4.00 | 0.00 | 30.8 | 7.7 | 1.33 | .375 | 1.50 | 9.00 | ||||
| 3 |  | J. Flaherty | 2023 |  BAL | 1 | 0 | 0 | 0 | 4.50 | 1 | 0 | 0 | 0 | 2.0 | 2 | 1 | 1 | 0 | 3 | 0 | 0 | 0 | 10 | 0 | 4.50 | 13.50 | 0.33 | 0.00 | 10.0 | 30.0 | 2.50 | .333 | 4.50 | 9.00 | |||||
| 4 |  | J. Flaherty | 2024 |  LAD | 5 | 1 | 2 | .333 | 5 | 7.36 | 15 | 0 | 0 | 0 | 22.0 | 24 | 18 | 18 | 6 | 9 | 1 | 0 | 0 | 98 | 0 | 6.14 | 3.68 | 1.67 | 2.45 | 15.3 | 9.2 | 1.50 | .269 | 7.36 | 9.82 | ||||
| Total | 10 | 2 | 5 | .286 | 9 | 5.36 | 46 | 0 | 0 | 0 | 47.0 | 49 | 28 | 28 | 8 | 18 | 2 | 0 | 0 | 206 | 3 | 8.81 | 3.45 | 2.56 | 1.53 | 22.3 | 8.7 | 1.43 | .311 | 5.36 | 9.38 |
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