| SP | Leonard, D.Leonard, Dutch >> | 22 | 1914 | L | 91 | 35 | 35 | 16 | 10 | 3.70 | .286 | 1.18 | 7.3 | 3.3 | 5.2 | 207.0 | 168 | 88 | 85 | 16 | 77 | 120 | 2 | 0 | 0 | 1 | 19 | 4 | 5 | 4.02 |
| SP | Alexander, P.Alexander, Pete † >> | 28 | 1915 | R | 88 | 33 | 33 | 18 | 8 | 3.61 | .282 | 1.15 | 7.5 | 2.9 | 4.6 | 234.2 | 196 | 95 | 94 | 16 | 75 | 119 | 10 | 0 | 0 | 4 | 20 | 5 | 3 | 3.90 |
| SP | Fernandez, J.Fernandez, Jose >> | 21 | 2013 | R | 76 | 33 | 33 | 12 | 9 | 4.29 | .310 | 1.32 | 7.7 | 4.2 | 7.0 | 191.0 | 163 | 93 | 91 | 15 | 90 | 149 | 1 | 0 | 0 | 0 | 19 | 4 | 3 | 3.94 |
| RP | Doolittle, S.Doolittle, Sean >> | 31 | 2018 | L | 99 | 95 | 0 | 3 | 2 | 3.17 | .271 | 1.07 | 6.8 | 2.9 | 8.5 | 102.1 | 77 | 37 | 36 | 13 | 33 | 96 | 0 | 6 | 3 | 0 | 0 | 4 | 3 | 3.86 |
| RP | Boxberger, B.Boxberger, Brad >> | 26 | 2014 | R | 83 | 78 | 0 | 5 | 3 | 2.68 | .295 | 1.25 | 6.5 | 4.8 | 7.9 | 77.1 | 56 | 27 | 23 | 7 | 41 | 68 | 0 | 10 | 4 | 0 | 0 | 0 | 3 | 4.01 |
| RP | Balfour, G.Balfour, Grant >> | 31 | 2008 | R | 75 | 57 | 0 | 6 | 3 | 3.93 | .301 | 1.27 | 6.4 | 5.1 | 10.0 | 55.0 | 39 | 25 | 24 | 4 | 31 | 61 | 0 | 10 | 1 | 0 | 0 | 1 | 3 | 3.47 |
| RP | Holland, G.Holland, Greg >> | 27 | 2013 | R | 71 | 38 | 0 | 3 | 3 | 3.35 | .264 | 1.08 | 6.7 | 3.0 | 8.6 | 51.0 | 38 | 19 | 19 | 5 | 17 | 49 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 3.35 |
| SP | Lundgren, C.Lundgren, Carl >> | 27 | 1907 | R | 42 | 1 | 0 | 0 | 0 | 4.15 | .381 | 1.85 | 11.3 | 6.8 | 6.8 | 4.1 | 5 | 2 | 2 | 0 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3.75 |