| SP | Strasburg, S.Strasburg, Stephen # >> | 29 | 2018 | R | 79 | 31 | 31 | 11 | 15 | 4.28 | .313 | 1.34 | 8.9 | 3.2 | 10.1 | 187.0 | 184 | 96 | 89 | 19 | 66 | 209 | 0 | 0 | 0 | 0 | 14 | 6 | 4 | 3.24 |
| SP | Lopez, R.Lopez, Reynaldo >> | 24 | 2018 | R | 62 | 27 | 26 | 10 | 11 | 4.71 | .312 | 1.33 | 8.4 | 3.6 | 8.8 | 154.2 | 143 | 81 | 81 | 28 | 62 | 151 | 1 | 0 | 0 | 1 | 11 | 5 | 2 | 4.71 |
| SP | Skoglund, E.Skoglund, Eric + >> | 25 | 2018 | L | 61 | 18 | 18 | 4 | 10 | 5.04 | .335 | 1.46 | 9.2 | 3.9 | 6.9 | 89.1 | 91 | 56 | 50 | 10 | 39 | 68 | 0 | 0 | 0 | 0 | 4 | 5 | 3 | 4.42 |
| SU | Treinen, B.Treinen, Blake >> | 30 | 2018 | R | 99 | 60 | 0 | 0 | 4 | 3.06 | .281 | 1.15 | 7.6 | 2.8 | 12.0 | 70.2 | 59 | 24 | 24 | 3 | 22 | 93 | 0 | 5 | 0 | 0 | 0 | 2 | 3 | 1.93 |
| RP | Stammen, C.Stammen, Craig >> | 34 | 2018 | R | 86 | 86 | 0 | 2 | 4 | 3.91 | .303 | 1.25 | 8.9 | 2.4 | 9.7 | 78.1 | 77 | 36 | 34 | 9 | 21 | 84 | 0 | 2 | 3 | 0 | 0 | 4 | 1 | 3.31 |
| RP | Rivero, F.Rivero, Felipe >> | 26 | 2018 | L | 68 | 82 | 0 | 1 | 3 | 5.61 | .316 | 1.31 | 9.2 | 2.6 | 10.4 | 51.1 | 52 | 32 | 32 | 9 | 15 | 59 | 0 | 0 | 0 | 0 | 0 | 4 | 3 | 4.10 |
| RP | Biddle, J.Biddle, Jesse + >> | 26 | 2018 | L | 67 | 53 | 0 | 1 | 2 | 3.12 | .272 | 1.10 | 6.8 | 3.1 | 11.9 | 49.0 | 37 | 17 | 17 | 4 | 17 | 65 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 2.51 |
| RP | Lyles, J.Lyles, Jordan >> | 27 | 2018 | R | 54 | 71 | 0 | 3 | 3 | 3.59 | .319 | 1.38 | 7.8 | 4.7 | 8.2 | 77.2 | 67 | 31 | 31 | 4 | 40 | 70 | 0 | 0 | 5 | 0 | 0 | 2 | 2 | 3.49 |
| SP | Roark, T.Roark, Tanner >> | 31 | 2018 | R | 51 | 31 | 1 | 7 | 2 | 3.82 | .298 | 1.24 | 8.5 | 2.7 | 8.1 | 94.1 | 89 | 41 | 40 | 10 | 28 | 85 | 0 | 1 | 0 | 0 | 1 | 3 | 2 | 3.56 |