| SP | Buehler, W.Buehler, Walker >> | 23 | 2018 | R | 97 | 31 | 31 | 14 | 8 | 2.99 | .271 | 1.08 | 7.3 | 2.4 | 9.5 | 201.2 | 164 | 67 | 67 | 15 | 54 | 212 | 0 | 0 | 0 | 0 | 21 | 7 | 5 | 2.77 |
| SP | Buchholz, C.Buchholz, Clay † # >> | 34 | 2018 | R | 89 | 30 | 30 | 15 | 5 | 3.62 | .274 | 1.11 | 7.2 | 2.8 | 6.8 | 206.1 | 165 | 83 | 83 | 27 | 64 | 155 | 3 | 0 | 0 | 1 | 20 | 5 | 1 | 4.20 |
| SP | Teheran, J.Teheran, Julio >> | 27 | 2018 | R | 83 | 30 | 30 | 13 | 5 | 4.89 | .348 | 1.56 | 9.1 | 5.0 | 8.1 | 167.1 | 168 | 91 | 91 | 29 | 93 | 151 | 0 | 0 | 0 | 0 | 10 | 7 | 2 | 5.25 |
| SP | Mengden, D.Mengden, Daniel >> | 25 | 2018 | R | 72 | 30 | 30 | 10 | 10 | 5.18 | .337 | 1.49 | 10.3 | 3.1 | 7.5 | 161.2 | 185 | 93 | 93 | 28 | 56 | 134 | 0 | 0 | 0 | 0 | 9 | 6 | 6 | 4.75 |
| SP | Richards, G.Richards, Garrett >> | 30 | 2018 | R | 62 | 29 | 29 | 8 | 6 | 3.98 | .303 | 1.28 | 7.3 | 4.2 | 9.2 | 147.0 | 120 | 68 | 65 | 23 | 68 | 151 | 0 | 0 | 0 | 0 | 7 | 4 | 16 | 4.45 |
| RP | Fields, J.Fields, Josh >> | 32 | 2018 | R | 87 | 77 | 0 | 1 | 5 | 3.65 | .295 | 1.23 | 7.7 | 3.4 | 8.3 | 103.2 | 88 | 42 | 42 | 15 | 39 | 95 | 0 | 10 | 5 | 0 | 0 | 3 | 0 | 4.27 |
| RP | Petit, Y.Petit, Yusmeiro # >> | 34 | 2018 | R | 73 | 64 | 0 | 3 | 4 | 4.40 | .287 | 1.20 | 9.3 | 1.5 | 8.6 | 86.0 | 89 | 42 | 42 | 9 | 14 | 82 | 0 | 5 | 4 | 0 | 0 | 1 | 0 | 2.98 |
| RP | Clippard, T.Clippard, Tyler >> | 33 | 2018 | R | 63 | 61 | 0 | 4 | 8 | 3.26 | .305 | 1.26 | 8.0 | 3.4 | 10.3 | 69.0 | 61 | 25 | 25 | 4 | 26 | 79 | 0 | 6 | 5 | 0 | 0 | 4 | 4 | 2.77 |
| RP | Winkler, D.Winkler, Dan >> | 28 | 2018 | R | 56 | 45 | 0 | 2 | 4 | 4.69 | .329 | 1.46 | 9.0 | 4.3 | 11.1 | 55.2 | 55 | 30 | 29 | 8 | 26 | 68 | 0 | 3 | 1 | 0 | 0 | 1 | 1 | 3.89 |
| SP | LeBlanc, W.LeBlanc, Wade >> | 34 | 2018 | L | 61 | 5 | 0 | 3 | 0 | 3.60 | .211 | 0.80 | 5.4 | 1.8 | 5.4 | 5.0 | 3 | 2 | 2 | 0 | 1 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.40 |
| SP | Rodriguez, E.Rodriguez, Eduardo >> | 25 | 2018 | L | 58 | 18 | 0 | 4 | 6 | 6.98 | .403 | 2.00 | 13.1 | 5.0 | 8.6 | 40.0 | 58 | 32 | 31 | 11 | 22 | 38 | 0 | 0 | 4 | 0 | 0 | 1 | 1 | 6.40 |