| SP | Leonard, D.Leonard, Dutch † >> | 22 | 1914 | L | 91 | 37 | 37 | 21 | 9 | 3.09 | .280 | 1.15 | 6.7 | 3.6 | 5.4 | 247.2 | 185 | 90 | 85 | 8 | 100 | 149 | 3 | 0 | 0 | 1 | 25 | 4 | 6 | 3.48 |
| SP | Brown, M.Brown, Mordecai >> | 32 | 1908 | R | 85 | 34 | 34 | 17 | 4 | 3.65 | .275 | 1.12 | 7.6 | 2.5 | 4.5 | 222.0 | 187 | 94 | 90 | 13 | 61 | 111 | 3 | 0 | 0 | 2 | 21 | 4 | 6 | 3.64 |
| SP | Reulbach, E.Reulbach, Ed >> | 24 | 1906 | R | 61 | 33 | 33 | 14 | 10 | 3.19 | .301 | 1.27 | 6.8 | 4.6 | 4.1 | 217.0 | 163 | 81 | 77 | 12 | 112 | 98 | 2 | 0 | 0 | 0 | 24 | 5 | 4 | 4.43 |
| RP | Miller, A.Miller, Andrew >> | 29 | 2014 | L | 88 | 87 | 0 | 7 | 2 | 3.36 | .255 | 1.02 | 5.9 | 3.3 | 9.7 | 104.1 | 68 | 39 | 39 | 6 | 38 | 112 | 0 | 8 | 2 | 0 | 0 | 1 | 4 | 2.72 |
| RP | Williams, D.Williams, Devin >> | 28 | 2023 | R | 72 | 70 | 0 | 8 | 0 | 2.74 | .270 | 1.11 | 6.0 | 4.1 | 7.9 | 75.2 | 50 | 24 | 23 | 7 | 34 | 66 | 0 | 1 | 2 | 0 | 0 | 0 | 4 | 3.81 |
| RP | Capps, C.Capps, Carter # >> | 24 | 2015 | R | 84 | 40 | 0 | 1 | 3 | 6.30 | .355 | 1.63 | 10.8 | 3.8 | 10.6 | 40.0 | 48 | 29 | 28 | 5 | 17 | 47 | 0 | 2 | 4 | 0 | 0 | 1 | 3 | 3.63 |
| RP | Bautista, F.Bautista, Félix >> | 28 | 2023 | R | 75 | 37 | 0 | 3 | 2 | 4.13 | .279 | 1.13 | 5.6 | 4.8 | 9.3 | 32.2 | 20 | 15 | 15 | 3 | 17 | 33 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 3.84 |
| CL | Wagner, B.Wagner, Billy † >> | 28 | 1999 | L | 95 | 71 | 0 | 5 | 11 | 4.27 | .311 | 1.34 | 7.1 | 5.1 | 9.1 | 71.2 | 56 | 34 | 34 | 4 | 40 | 72 | 0 | 41 | 6 | 0 | 0 | 1 | 4 | 3.44 |