| SP | Walters, B.Walters, Bucky † | Bees | R | 153.0 | 42 | 42 | 26 | 9 | 4.35 | .338 | 1.52 | 10.2 | 3.5 | 3.3 | 324.2 | 367 | 176 | 157 | 18 | 127 | 120 | 8 | 0 | 0 | 0 | 24 | 3 | 7 | 4.19 |
| SP | Vander Meer, J.Vander Meer, Johnny † | Reds | L | 135.0 | 42 | 42 | 17 | 16 | 3.30 | .298 | 1.27 | 7.3 | 4.2 | 5.0 | 297.0 | 240 | 122 | 109 | 10 | 138 | 166 | 9 | 0 | 0 | 4 | 26 | 1 | 6 | 3.72 |
| SP | Schmitz, J.Schmitz, Johnny | Cubs | L | 131.0 | 42 | 42 | 13 | 4 | 1.91 | .256 | 1.03 | 5.5 | 3.8 | 4.2 | 197.2 | 121 | 46 | 42 | 4 | 83 | 91 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 3.60 |
| CL | Hutchinson, I.Hutchinson, Ira † | Bees | R | 130.5 | 76 | 0 | 6 | 4 | 3.79 | .318 | 1.39 | 7.4 | 5.1 | 3.1 | 97.1 | 80 | 46 | 41 | 4 | 55 | 33 | 0 | 39 | 3 | 0 | 0 | 1 | 0 | 4.59 |
| SP | Lanning, J.Lanning, Johnny # | Bees | R | 128.0 | 41 | 41 | 18 | 12 | 3.29 | .288 | 1.20 | 8.6 | 2.2 | 2.9 | 268.0 | 256 | 106 | 98 | 10 | 65 | 86 | 3 | 0 | 0 | 2 | 24 | 5 | 3 | 3.63 |
| SP | Leonard, D.Leonard, Dutch † | Robins | R | 125.0 | 39 | 39 | 16 | 12 | 3.50 | .300 | 1.28 | 8.9 | 2.6 | 3.1 | 298.0 | 296 | 123 | 116 | 19 | 86 | 103 | 10 | 0 | 0 | 2 | 27 | 2 | 5 | 4.02 |