| 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 |  | R. Mahaffey | 1930 |  PHA | 33 | 9 | 5 | .643 | 17 | 5.01 | 38 | 6 | 0 | 0 | 152.2 | 186 | 85 | 108 | 16 | 53 | 4 | 4 | 697 | 4 | 2.24 | 3.12 | 0.72 | 0.94 | 5.5 | 7.6 | 1.57 | .290 | 6.37 | 105 | 5.49 | 113 | 10.97 | -10.2 | |
| 2 |  | R. Mahaffey | 1927 |  PIT | 2 | 1 | 0 | 1.000 | 1 | 7.71 | 4 | 0 | 0 | 0 | 9.1 | 9 | 8 | 8 | 0 | 9 | 3 | 1 | 45 | 1 | 3.86 | 8.68 | 0.44 | 0.00 | 8.9 | 20.0 | 1.93 | .310 | 7.71 | 190 | 6.03 | 147 | 8.68 | -1.9 | |
| 3 | | R. Mahaffey | 1926 | PIT | 4 | 0 | 0 | 0 | 0.00 | 3 | 0 | 0 | 0 | 4.2 | 5 | 0 | 4 | 0 | 1 | 1 | 3 | 20 | 0 | 5.79 | 1.93 | 3.00 | 0.00 | 15.0 | 5.0 | 1.29 | .333 | 7.71 | 0 | 2.91 | 73 | 9.64 | 0.5 |
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