| SP | Arrieta, J.Arrieta, Jake † >> | 29 | 2015 | R | 95 | 31 | 31 | 14 | 12 | 3.43 | .274 | 1.12 | 7.4 | 2.6 | 7.7 | 254.2 | 210 | 104 | 97 | 25 | 74 | 216 | 14 | 0 | 0 | 3 | 20 | 4 | 2 | 3.50 |
| SP | Brown, M.Brown, Mordecai † >> | 33 | 1909 | R | 80 | 30 | 30 | 13 | 12 | 2.99 | .277 | 1.13 | 7.6 | 2.6 | 4.7 | 240.2 | 203 | 89 | 80 | 21 | 70 | 124 | 10 | 0 | 0 | 2 | 19 | 4 | 2 | 4.03 |
| SP | Clarkson, J.Clarkson, John † >> | 24 | 1885 | R | 66 | 30 | 30 | 14 | 14 | 4.26 | .321 | 1.41 | 10.0 | 2.7 | 4.2 | 234.1 | 260 | 117 | 111 | 23 | 71 | 108 | 21 | 0 | 0 | 0 | 17 | 2 | 5 | 4.29 |
| SP | Reulbach, E.Reulbach, Ed >> | 23 | 1905 | R | 75 | 30 | 30 | 14 | 15 | 4.25 | .323 | 1.42 | 9.0 | 3.7 | 4.5 | 243.1 | 244 | 119 | 115 | 20 | 101 | 122 | 19 | 0 | 0 | 2 | 15 | 3 | 1 | 4.35 |
| SP | Taylor, J.Taylor, Jack # >> | 28 | 1902 | R | 59 | 28 | 28 | 9 | 16 | 4.43 | .303 | 1.28 | 9.1 | 2.5 | 4.0 | 225.1 | 227 | 121 | 111 | 24 | 62 | 99 | 14 | 0 | 0 | 2 | 13 | 5 | 4 | 4.40 |
| RP | Miller, T.Miller, Tyson >> | 28 | 2024 | R | 79 | 52 | 0 | 3 | 2 | 3.66 | .289 | 1.22 | 7.8 | 3.3 | 6.3 | 66.1 | 57 | 33 | 27 | 11 | 24 | 46 | 0 | 4 | 1 | 0 | 0 | 0 | 0 | 4.86 |
| RP | Rondon, H.Rondon, Hector >> | 28 | 2016 | R | 49 | 16 | 0 | 0 | 3 | 3.78 | .296 | 1.26 | 9.0 | 2.8 | 8.4 | 16.2 | 16 | 7 | 7 | 3 | 5 | 15 | 0 | 2 | 0 | 0 | 0 | 0 | 2 | 4.50 |
| RP | Edwards, C.Edwards, Carl >> | 24 | 2016 | R | 96 | 5 | 0 | 0 | 0 | 1.29 | .192 | 0.71 | 5.1 | 1.3 | 12.9 | 7.0 | 4 | 1 | 1 | 0 | 1 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.57 |
| RP | Weaver, H.Weaver, Harry >> | 26 | 1918 | R | 37 | 10 | 0 | 1 | 0 | 5.93 | .293 | 1.24 | 9.7 | 2.1 | 2.1 | 13.2 | 14 | 9 | 9 | 4 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.23 |
| RP | Russell, J.Russell, James >> | 28 | 2014 | L | 39 | 15 | 0 | 0 | 0 | 4.76 | .378 | 1.76 | 11.1 | 4.8 | 7.9 | 17.0 | 21 | 9 | 9 | 1 | 9 | 15 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 3.76 |