Harry Brecheen was 4-1 with an ERA of 0.83 and 18 strikeouts in 7 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 |  | H. Brecheen | 1943 |  SLN | 3 | 0 | 1 | .000 | 0 | 2.45 | 3 | 0 | 0 | 0 | 3.2 | 5 | 1 | 1 | 0 | 3 | 0 | 3 | 2 | 17 | 0 | 7.36 | 7.36 | 1.00 | 0.00 | 17.6 | 17.6 | 2.18 | .455 | 2.45 | 12.27 | ||||
| 2 | | H. Brecheen | 1944 | SLN | 1 | 1 | 0 | 1.000 | 1 | 1.00 | 4 | 1 | 0 | 0 | 9.0 | 9 | 1 | 1 | 0 | 4 | 0 | 0 | 0 | 38 | 0 | 4.00 | 4.00 | 1.00 | 0.00 | 10.5 | 10.5 | 1.44 | .300 | 1.00 | 9.00 | ||||
| 3 | | H. Brecheen | 1946 | SLN | 3 | 3 | 0 | 1.000 | 2 | 0.45 | 11 | 2 | 1 | 0 | 20.0 | 14 | 1 | 1 | 0 | 5 | 0 | 1 | 1 | 74 | 0 | 4.95 | 2.25 | 2.20 | 0.00 | 14.9 | 6.8 | 0.95 | .241 | 0.45 | 6.30 | ||||
| Total | 7 | 4 | 1 | .800 | 3 | 0.83 | 18 | 3 | 1 | 0 | 32.2 | 28 | 3 | 3 | 0 | 12 | 0 | 4 | 3 | 129 | 0 | 4.96 | 3.31 | 1.50 | 0.00 | 14.0 | 9.3 | 1.22 | .283 | 0.83 | 7.71 |
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