| SP | Warneke, L.Warneke, Lon † | Cubs | R | 158.0 | 27 | 27 | 17 | 7 | 2.72 | .252 | 1.00 | 7.2 | 1.8 | 3.0 | 224.2 | 180 | 78 | 68 | 16 | 45 | 74 | 22 | 0 | 0 | 3 | 20 | 2 | 5 | 3.90 |
| SP | Podgajny, J.Podgajny, Johnny † | Pirates | R | 149.0 | 27 | 27 | 19 | 5 | 3.15 | .274 | 1.12 | 8.5 | 1.6 | 5.5 | 206.0 | 194 | 82 | 72 | 18 | 37 | 125 | 10 | 0 | 0 | 2 | 17 | 2 | 5 | 3.49 |
| CL | Birkofer, R.Birkofer, Ralph † | Pirates | L | 97.5 | 41 | 0 | 0 | 2 | 2.25 | .241 | 0.95 | 7.2 | 1.4 | 4.5 | 40.0 | 32 | 10 | 10 | 2 | 6 | 20 | 0 | 37 | 4 | 0 | 0 | 0 | 0 | 3.10 |
| SP | Schumacher, H.Schumacher, Hal † | Giants | R | 96.0 | 27 | 27 | 11 | 9 | 3.01 | .255 | 1.02 | 7.0 | 2.3 | 3.8 | 203.1 | 157 | 75 | 68 | 20 | 51 | 86 | 7 | 0 | 0 | 1 | 21 | 1 | 5 | 4.20 |
| SP | Ruffing, R.Ruffing, Red † # | Pirates | R | 72.0 | 26 | 26 | 12 | 8 | 4.28 | .296 | 1.25 | 8.1 | 3.1 | 4.4 | 178.2 | 161 | 87 | 85 | 17 | 62 | 88 | 7 | 0 | 0 | 1 | 12 | 2 | 7 | 4.33 |