| SP | Leonard, D.Leonard, Dutch † | Humm | L | 185.0 | 37 | 37 | 24 | 7 | 2.58 | .276 | 1.13 | 6.6 | 3.5 | 5.3 | 251.1 | 184 | 75 | 72 | 20 | 99 | 147 | 0 | 0 | 0 | 0 | 30 | 4 | 4 | 4.10 |
| SP | Arrieta, J.Arrieta, Jake † # $ | Gaels | R | 146.0 | 35 | 35 | 19 | 10 | 2.95 | .229 | 0.88 | 6.3 | 1.7 | 7.5 | 228.2 | 159 | 77 | 75 | 22 | 42 | 189 | 3 | 0 | 0 | 2 | 25 | 3 | 3 | 3.19 |
| SP | Johnson, W.Johnson, Walter | Cavemen | R | 138.0 | 34 | 34 | 17 | 10 | 3.24 | .291 | 1.23 | 8.4 | 2.7 | 5.7 | 261.0 | 245 | 94 | 94 | 22 | 77 | 164 | 7 | 0 | 0 | 2 | 21 | 0 | 2 | 3.72 |
| SP | Martinez, P.Martinez, Pedro $ | Knights | R | 129.0 | 32 | 32 | 17 | 11 | 3.58 | .290 | 1.20 | 8.7 | 2.1 | 7.8 | 239.0 | 231 | 97 | 95 | 21 | 55 | 208 | 11 | 0 | 0 | 1 | 19 | 7 | 1 | 3.18 |
| SP | Mathewson, C.Mathewson, Christy $ | Classics | R | 129.0 | 35 | 35 | 16 | 13 | 3.31 | .264 | 1.07 | 7.8 | 1.9 | 4.5 | 260.2 | 225 | 101 | 96 | 17 | 54 | 131 | 13 | 0 | 0 | 4 | 19 | 2 | 2 | 3.49 |
| SP | Kershaw, C.Kershaw, Clayton | Tigers | L | 127.0 | 34 | 34 | 18 | 15 | 3.72 | .284 | 1.18 | 8.8 | 1.9 | 8.2 | 256.2 | 249 | 118 | 106 | 32 | 54 | 233 | 10 | 0 | 0 | 2 | 21 | 3 | 4 | 3.47 |