| NAME | ERA | SEASON | TM | G | W | L | W% | GS | 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. Ruth | 3.91 | 1914 |  BSA | 4 | 2 | 1 | .667 | 3 | 3 | 1 | 0 | 0 | 23.0 | 21 | 10 | 12 | 1 | 7 | 0 | 0 | 96 | 0 | 1.17 | 2.74 | 0.43 | 0.39 | 3.1 | 7.3 | 1.22 | .235 | 4.70 | 146 | 3.65 | 132 | 8.22 | -2.3 | |
| 2 | | B. Ruth | 2.44 | 1915 | BSA | 32 | 18 | 8 | .692 | 28 | 112 | 16 | 1 | 0 | 217.2 | 166 | 59 | 80 | 3 | 85 | 6 | 3 | 874 | 9 | 4.63 | 3.51 | 1.32 | 0.12 | 12.8 | 9.7 | 1.15 | .244 | 3.31 | 85 | 2.81 | 97 | 6.86 | 1.8 | |
| 3 | | B. Ruth | 1.75 | 1916 | BSA | 44 | 23 | 12 | .657 | 40 | 170 | 23 | 9 | 1 | 323.2 | 230 | 63 | 83 | 0 | 118 | 8 | 3 | 1,272 | 3 | 4.73 | 3.28 | 1.44 | 0.00 | 13.4 | 9.3 | 1.08 | .236 | 2.31 | 65 | 2.43 | 90 | 6.40 | 8.8 | |
| 4 | | B. Ruth | 2.01 | 1917 | BSA | 41 | 24 | 13 | .649 | 38 | 128 | 35 | 6 | 2 | 326.1 | 244 | 73 | 93 | 2 | 108 | 11 | 3 | 1,277 | 5 | 3.53 | 2.98 | 1.19 | 0.06 | 10.0 | 8.5 | 1.08 | .235 | 2.56 | 80 | 2.65 | 100 | 6.73 | -2 | |
| 5 | | B. Ruth | 2.22 | 1918 | BSA | 20 | 13 | 7 | .650 | 19 | 40 | 18 | 1 | 0 | 166.1 | 125 | 41 | 51 | 1 | 49 | 2 | 0 | 660 | 3 | 2.16 | 2.65 | 0.82 | 0.05 | 6.1 | 7.4 | 1.05 | .218 | 2.76 | 84 | 2.75 | 102 | 6.76 | -1.8 | |
| 6 | | B. Ruth | 2.97 | 1919 | BSA | 17 | 9 | 5 | .643 | 15 | 30 | 12 | 0 | 1 | 133.1 | 148 | 44 | 59 | 2 | 58 | 2 | 2 | 570 | 5 | 2.03 | 3.91 | 0.52 | 0.14 | 5.3 | 10.2 | 1.55 | .305 | 3.98 | 96 | 3.58 | 118 | 9.99 | -8.8 | |
| Total | 2.19 | 158 | 89 | 46 | .659 | 143 | 483 | 105 | 17 | 4 | 1190.1 | 934 | 290 | 378 | 9 | 425 | 29 | 11 | 4,749 | 25 | 3.65 | 3.21 | 1.14 | 0.07 | 10.2 | 8.9 | 1.14 | .243 | 2.86 | 80 | 2.76 | 100 | 7.06 | -4.3 |
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