| SP | Quintana, J.Quintana, Jose >> | 29 | 2017 | L | 67 | 13 | 13 | 8 | 1 | 3.09 | .279 | 1.13 | 7.0 | 3.2 | 10.0 | 81.2 | 63 | 34 | 28 | 10 | 29 | 90 | 0 | 0 | 0 | 0 | 9 | 3 | 2 | 3.57 |
| SP | Hendricks, K.Hendricks, Kyle >> | 28 | 2018 | R | 74 | 13 | 13 | 4 | 3 | 3.27 | .288 | 1.18 | 8.0 | 2.7 | 6.5 | 88.0 | 78 | 36 | 32 | 13 | 26 | 64 | 0 | 0 | 0 | 0 | 9 | 3 | 0 | 4.45 |
| SP | Arrieta, J.Arrieta, Jake # >> | 32 | 2017 | R | 66 | 12 | 12 | 4 | 6 | 5.45 | .327 | 1.45 | 9.8 | 3.3 | 8.5 | 66.0 | 72 | 41 | 40 | 9 | 24 | 62 | 0 | 0 | 0 | 0 | 6 | 0 | 6 | 3.98 |
| SP | Hamels, C.Hamels, Cole >> | 35 | 2018 | L | 54 | 12 | 12 | 5 | 1 | 2.83 | .289 | 1.18 | 8.4 | 2.3 | 6.6 | 76.1 | 71 | 27 | 24 | 7 | 19 | 56 | 0 | 0 | 0 | 0 | 9 | 3 | 0 | 3.59 |
| SP | Lester, J.Lester, Jon # >> | 34 | 2018 | L | 28 | 12 | 12 | 7 | 2 | 4.70 | .309 | 1.30 | 9.1 | 2.6 | 8.5 | 67.0 | 68 | 40 | 35 | 11 | 19 | 63 | 0 | 0 | 0 | 0 | 7 | 3 | 1 | 4.24 |
| RP | Wilson, J.Wilson, Justin >> | 30 | 2017 | L | 77 | 32 | 0 | 1 | 2 | 1.93 | .243 | 0.96 | 7.0 | 2.0 | 14.5 | 18.2 | 14 | 5 | 4 | 1 | 4 | 29 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.17 |
| RP | Morrow, B.Morrow, Brandon >> | 34 | 2018 | R | 49 | 30 | 0 | 3 | 2 | 6.35 | .398 | 1.94 | 13.9 | 4.1 | 7.4 | 22.2 | 34 | 19 | 16 | 5 | 10 | 18 | 0 | 2 | 1 | 0 | 0 | 1 | 0 | 5.82 |
| RP | Rondon, H.Rondon, Hector >> | 30 | 2017 | R | 53 | 24 | 0 | 1 | 0 | 4.91 | .298 | 1.27 | 7.0 | 4.5 | 12.3 | 22.0 | 17 | 13 | 12 | 3 | 11 | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3.55 |
| CL | Edwards, C.Edwards, Carl >> | 26 | 2017 | R | 80 | 23 | 0 | 2 | 1 | 1.57 | .242 | 0.96 | 4.3 | 4.3 | 11.0 | 23.0 | 11 | 4 | 4 | 0 | 11 | 28 | 0 | 14 | 2 | 0 | 0 | 0 | 2 | 2.00 |
| SP | Butler, E.Butler, Eddie >> | 27 | 2017 | R | 41 | 8 | 0 | 2 | 0 | 5.46 | .328 | 1.39 | 8.0 | 4.5 | 9.3 | 28.0 | 25 | 17 | 17 | 6 | 14 | 29 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 5.43 |