| SP | Greinke, Z.Greinke, Zack # >> | 32 | 2015 | R | 94 | 30 | 30 | 15 | 10 | 3.66 | .284 | 1.17 | 8.2 | 2.4 | 7.0 | 219.0 | 199 | 92 | 89 | 20 | 58 | 170 | 7 | 0 | 0 | 2 | 17 | 3 | 4 | 3.47 |
| SP | Scott, M.Scott, Mike # >> | 31 | 1986 | R | 87 | 29 | 29 | 7 | 14 | 5.32 | .333 | 1.47 | 9.7 | 3.6 | 8.4 | 182.2 | 196 | 114 | 108 | 28 | 72 | 169 | 3 | 0 | 0 | 1 | 11 | 5 | 2 | 4.41 |
| SP | Chesbro, J.Chesbro, Jack >> | 30 | 1904 | R | 65 | 28 | 28 | 8 | 16 | 4.58 | .319 | 1.39 | 9.6 | 3.0 | 4.9 | 194.2 | 206 | 105 | 99 | 23 | 64 | 105 | 12 | 0 | 0 | 2 | 13 | 4 | 1 | 4.51 |
| SP | Caldwell, R.Caldwell, Ray >> | 26 | 1914 | R | 63 | 28 | 28 | 7 | 13 | 6.22 | .363 | 1.68 | 11.3 | 3.9 | 4.0 | 147.2 | 184 | 106 | 102 | 20 | 64 | 66 | 0 | 0 | 0 | 0 | 12 | 4 | 5 | 5.26 |
| RP | Hader, J.Hader, Josh † >> | 24 | 2018 | L | 93 | 70 | 0 | 7 | 3 | 2.33 | .296 | 1.24 | 6.7 | 4.5 | 10.3 | 108.0 | 80 | 28 | 28 | 2 | 54 | 123 | 0 | 9 | 1 | 0 | 0 | 2 | 0 | 2.52 |
| RP | Harvey, B.Harvey, Bryan >> | 28 | 1991 | R | 66 | 56 | 0 | 2 | 4 | 3.87 | .313 | 1.34 | 8.5 | 3.7 | 8.3 | 76.2 | 72 | 35 | 33 | 7 | 31 | 70 | 0 | 6 | 1 | 0 | 0 | 2 | 3 | 3.66 |
| RP | Eichhorn, M.Eichhorn, Mark >> | 26 | 1986 | R | 48 | 39 | 0 | 2 | 2 | 5.97 | .339 | 1.51 | 9.5 | 4.1 | 9.4 | 66.1 | 70 | 48 | 44 | 13 | 30 | 69 | 0 | 2 | 1 | 0 | 0 | 2 | 3 | 4.92 |
| SP | McQuillan, G.McQuillan, George >> | 23 | 1908 | R | 48 | 0 | 0 | 0 | 0 | - | .000 | - | - | - | - | 0.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - |
| SP | Overall, O.Overall, Orval >> | 28 | 1909 | R | 56 | 25 | 0 | 2 | 4 | 6.15 | .373 | 1.74 | 10.8 | 5.0 | 3.4 | 45.1 | 54 | 33 | 31 | 8 | 25 | 17 | 0 | 0 | 2 | 0 | 0 | 2 | 0 | 6.36 |