| SP | Walters, B.Walters, Bucky † | Bees | R | 145.0 | 41 | 41 | 25 | 9 | 4.38 | .338 | 1.53 | 10.2 | 3.5 | 3.4 | 316.2 | 359 | 173 | 154 | 17 | 124 | 118 | 8 | 0 | 0 | 0 | 23 | 3 | 7 | 4.16 |
| CL | Hutchinson, I.Hutchinson, Ira † | Bees | R | 125.5 | 73 | 0 | 6 | 4 | 3.80 | .319 | 1.39 | 7.5 | 5.2 | 3.1 | 94.2 | 78 | 45 | 40 | 4 | 54 | 32 | 0 | 37 | 3 | 0 | 0 | 1 | 0 | 4.63 |
| SP | Schmitz, J.Schmitz, Johnny | Cubs | L | 123.0 | 41 | 41 | 12 | 4 | 1.98 | .260 | 1.06 | 5.6 | 3.9 | 4.2 | 191.1 | 119 | 46 | 42 | 4 | 83 | 89 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 3.64 |
| SP | Lanning, J.Lanning, Johnny # | Bees | R | 121.0 | 39 | 39 | 17 | 11 | 3.32 | .288 | 1.19 | 8.6 | 2.1 | 2.9 | 254.2 | 244 | 102 | 94 | 10 | 60 | 82 | 3 | 0 | 0 | 2 | 22 | 5 | 3 | 3.63 |
| SP | Leonard, D.Leonard, Dutch † | Robins | R | 118.0 | 38 | 38 | 15 | 12 | 3.51 | .300 | 1.28 | 8.9 | 2.6 | 3.2 | 289.1 | 285 | 120 | 113 | 19 | 85 | 102 | 10 | 0 | 0 | 2 | 26 | 2 | 5 | 4.05 |