| SP | Buehler, W.Buehler, Walker >> | 23 | 2018 | R | 96 | 33 | 33 | 14 | 7 | 3.43 | .287 | 1.18 | 7.7 | 2.9 | 11.0 | 199.2 | 171 | 79 | 76 | 25 | 64 | 243 | 0 | 0 | 0 | 0 | 0 | 6 | 3 | 3.25 |
| SP | Kershaw, C.Kershaw, Clayton >> | 30 | 2018 | L | 84 | 32 | 32 | 13 | 8 | 4.04 | .323 | 1.41 | 9.6 | 3.0 | 8.3 | 196.0 | 210 | 93 | 88 | 27 | 66 | 181 | 1 | 0 | 0 | 1 | 0 | 4 | 17 | 4.02 |
| RP | Jansen, K.Jansen, Kenley >> | 30 | 2018 | R | 85 | 55 | 0 | 9 | 2 | 2.46 | .270 | 1.08 | 7.4 | 2.4 | 11.4 | 80.1 | 66 | 24 | 22 | 4 | 21 | 101 | 0 | 2 | 1 | 0 | 0 | 2 | 0 | 1.99 |
| RP | Fields, J.Fields, Josh >> | 32 | 2018 | R | 83 | 60 | 0 | 0 | 5 | 2.33 | .252 | 1.00 | 6.1 | 2.9 | 9.0 | 89.0 | 60 | 29 | 23 | 13 | 29 | 89 | 0 | 4 | 7 | 0 | 0 | 1 | 0 | 3.91 |
| RP | Ferguson, C.Ferguson, Caleb >> | 21 | 2018 | L | 70 | 78 | 0 | 10 | 4 | 2.35 | .252 | 0.98 | 6.8 | 2.1 | 10.0 | 137.2 | 103 | 38 | 36 | 14 | 32 | 152 | 0 | 10 | 4 | 0 | 0 | 4 | 6 | 2.90 |
| RP | Goeddel, E.Goeddel, Erik >> | 29 | 2018 | R | 67 | 62 | 0 | 8 | 5 | 2.86 | .311 | 1.31 | 6.8 | 5.1 | 9.9 | 69.1 | 52 | 23 | 22 | 6 | 39 | 76 | 0 | 8 | 5 | 0 | 0 | 3 | 1 | 3.75 |
| RP | Chargois, J.Chargois, J.T. >> | 27 | 2018 | R | 64 | 16 | 0 | 2 | 1 | 1.50 | .294 | 1.25 | 8.3 | 3.0 | 9.0 | 12.0 | 11 | 2 | 2 | 1 | 4 | 12 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 3.08 |
| RP | Hudson, D.Hudson, Daniel >> | 31 | 2018 | R | 64 | 3 | 0 | 0 | 0 | 0.00 | .182 | 0.67 | 6.0 | 0.0 | 9.0 | 3.0 | 2 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.00 |
| SP | Stripling, R.Stripling, Ross >> | 28 | 2018 | R | 61 | 49 | 0 | 13 | 4 | 3.86 | .283 | 1.17 | 9.0 | 1.5 | 10.9 | 140.0 | 140 | 67 | 60 | 16 | 24 | 169 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 2.63 |