| SP | Johnson, W.Johnson, Walter >> | 26 | 1913 | R | 95 | 17 | 17 | 7 | 3 | 2.36 | .261 | 1.06 | 7.6 | 2.0 | 4.2 | 118.0 | 99 | 34 | 31 | 12 | 26 | 55 | 2 | 0 | 0 | 0 | 14 | 0 | 2 | 4.05 |
| SP | Brown, M.Brown, Mordecai † >> | 32 | 1908 | R | 84 | 16 | 16 | 10 | 3 | 3.19 | .297 | 1.23 | 8.4 | 2.6 | 4.9 | 113.0 | 106 | 47 | 40 | 9 | 33 | 61 | 2 | 0 | 0 | 0 | 12 | 4 | 3 | 3.94 |
| SP | Fernandez, J.Fernandez, Jose >> | 21 | 2013 | R | 76 | 16 | 16 | 3 | 7 | 4.45 | .343 | 1.53 | 8.9 | 4.9 | 8.6 | 87.0 | 86 | 43 | 43 | 11 | 47 | 83 | 0 | 0 | 0 | 0 | 8 | 3 | 1 | 4.46 |
| SP | Pfiester, J.Pfiester, Jack >> | 28 | 1906 | L | 74 | 16 | 16 | 7 | 4 | 4.03 | .295 | 1.24 | 8.7 | 2.5 | 5.0 | 105.0 | 101 | 49 | 47 | 9 | 29 | 58 | 3 | 0 | 0 | 0 | 9 | 2 | 2 | 3.90 |
| CL | Hader, J.Hader, Josh † >> | 24 | 2018 | L | 94 | 37 | 0 | 3 | 5 | 1.69 | .260 | 1.05 | 4.9 | 4.7 | 8.4 | 42.2 | 23 | 9 | 8 | 3 | 22 | 39 | 0 | 21 | 1 | 0 | 0 | 0 | 0 | 3.64 |
| RP | Devine, J.Devine, Joey >> | 25 | 2008 | R | 80 | 39 | 0 | 4 | 0 | 3.09 | .226 | 0.88 | 6.2 | 1.7 | 7.9 | 32.0 | 22 | 11 | 11 | 3 | 6 | 28 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 3.03 |
| RP | Williams, D.Williams, Devin >> | 28 | 2023 | R | 72 | 26 | 0 | 1 | 1 | 3.52 | .233 | 0.91 | 5.1 | 3.1 | 9.8 | 23.0 | 13 | 9 | 9 | 3 | 8 | 25 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 3.57 |
| RP | Treinen, B.Treinen, Blake >> | 30 | 2018 | R | 79 | 21 | 0 | 1 | 0 | 1.86 | .256 | 1.03 | 7.6 | 1.9 | 8.5 | 19.1 | 16 | 4 | 4 | 1 | 4 | 18 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 2.42 |