Sadie McMahon had a 14-12 record with an ERA of 3.53 and 117 strikeouts in 28 appearances in his rookie season in 1889.
| 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 |  | S. McMahon | 1889 |  PHA | 28 | 14 | 12 | .538 | 27 | 3.53 | 117 | 27 | 2 | 0 | 242.0 | 230 | 95 | 160 | 5 | 102 | 14 | 1 | 1,063 | 15 | 4.35 | 3.79 | 1.15 | 0.19 | 11.0 | 9.6 | 1.37 | .273 | 5.95 | 92 | 3.74 | 98 | 8.55 | 2.3 |
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