Bill MacDonald played 2 seasons for the Pirates. He had 8 wins, 11 losses, an ERA of 4.66 and 64 strikeouts.
| 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 |  | B. MacDonald | 1950 |  PIT | 32 | 8 | 10 | .444 | 20 | 4.29 | 60 | 6 | 2 | 1 | 153.0 | 138 | 73 | 88 | 17 | 88 | 1 | 8 | 664 | 4 | 3.53 | 5.18 | 0.68 | 1.00 | 9.0 | 13.3 | 1.48 | .243 | 5.18 | 99 | 4.99 | 111 | 8.12 | -7.7 | |
| 2 | | B. MacDonald | 1953 | PIT | 4 | 0 | 1 | .000 | 1 | 12.27 | 4 | 0 | 0 | 0 | 7.1 | 12 | 10 | 10 | 0 | 8 | 1 | 1 | 39 | 0 | 4.91 | 9.82 | 0.50 | 0.00 | 10.3 | 20.5 | 2.73 | .462 | 12.27 | 278 | 5.18 | 118 | 14.73 | -0.6 | |
| Total | 36 | 8 | 11 | .421 | 21 | 4.66 | 64 | 6 | 2 | 1 | 160.1 | 150 | 83 | 98 | 17 | 96 | 2 | 9 | 703 | 4 | 3.59 | 5.39 | 0.67 | 0.95 | 9.1 | 13.7 | 1.53 | .254 | 5.50 | 107 | 5.00 | 112 | 8.42 | -8.4 |
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