| SP | Lundgren, C.Lundgren, Carl >> | 27 | 1907 | R | 43 | 26 | 26 | 6 | 9 | 4.07 | .348 | 1.58 | 8.4 | 5.8 | 3.9 | 172.2 | 161 | 92 | 78 | 19 | 111 | 75 | 1 | 0 | 0 | 0 | 15 | 4 | 4 | 5.57 |
| SP | Waddell, R.Waddell, Rube >> | 29 | 1905 | L | 67 | 31 | 28 | 5 | 11 | 5.78 | .340 | 1.51 | 9.1 | 4.4 | 5.8 | 190.0 | 193 | 123 | 122 | 25 | 93 | 122 | 3 | 1 | 0 | 1 | 10 | 7 | 2 | 5.01 |
| RP | Treinen, B.Treinen, Blake >> | 30 | 2018 | R | 79 | 50 | 0 | 3 | 5 | 3.23 | .295 | 1.26 | 6.7 | 4.7 | 8.3 | 55.2 | 41 | 23 | 20 | 7 | 29 | 51 | 0 | 8 | 2 | 0 | 0 | 0 | 6 | 4.38 |
| RP | Gregerson, L.Gregerson, Luke >> | 26 | 2010 | R | 73 | 28 | 0 | 4 | 1 | 3.24 | .296 | 1.20 | 7.1 | 3.8 | 7.6 | 33.1 | 26 | 15 | 12 | 1 | 14 | 28 | 0 | 3 | 2 | 0 | 0 | 2 | 0 | 3.15 |
| RP | Dotel, O.Dotel, Octavio >> | 29 | 2002 | R | 68 | 29 | 0 | 2 | 0 | 2.92 | .293 | 1.24 | 7.1 | 4.1 | 8.3 | 37.0 | 29 | 12 | 12 | 4 | 17 | 34 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 3.95 |
| SP | Hernandez, F.Hernandez, Felix # >> | 28 | 2014 | R | 80 | 26 | 7 | 4 | 5 | 4.87 | .345 | 1.55 | 10.5 | 3.5 | 8.3 | 129.1 | 150 | 83 | 70 | 15 | 50 | 119 | 1 | 0 | 1 | 0 | 3 | 4 | 8 | 3.92 |