| SP | Glasnow, T.Glasnow, Tyler # >> | 25 | 2019 | R | 99 | 31 | 31 | 16 | 10 | 3.99 | .290 | 1.17 | 8.2 | 2.4 | 10.8 | 171.1 | 156 | 79 | 76 | 23 | 45 | 205 | 0 | 0 | 0 | 0 | 11 | 9 | 1 | 3.30 |
| SP | Greinke, Z.Greinke, Zack >> | 36 | 2019 | R | 88 | 30 | 30 | 18 | 12 | 3.80 | .294 | 1.19 | 8.7 | 2.0 | 8.0 | 206.0 | 199 | 87 | 87 | 35 | 46 | 184 | 2 | 0 | 0 | 1 | 22 | 12 | 2 | 4.27 |
| SP | German, D.German, Domingo >> | 26 | 2019 | R | 78 | 30 | 30 | 9 | 8 | 5.38 | .330 | 1.44 | 10.0 | 3.0 | 9.3 | 169.0 | 187 | 101 | 101 | 37 | 57 | 174 | 0 | 0 | 0 | 0 | 11 | 6 | 1 | 4.91 |
| SP | DeSclafani, A.DeSclafani, Anthony >> | 29 | 2019 | R | 69 | 29 | 29 | 7 | 4 | 4.92 | .327 | 1.42 | 9.6 | 3.2 | 9.3 | 159.0 | 170 | 93 | 87 | 31 | 56 | 165 | 0 | 0 | 0 | 0 | 9 | 6 | 5 | 4.63 |
| SP | Plesac, Z.Plesac, Zach >> | 24 | 2019 | R | 61 | 30 | 28 | 10 | 6 | 4.72 | .329 | 1.45 | 9.1 | 4.0 | 7.4 | 164.0 | 165 | 87 | 86 | 28 | 73 | 134 | 0 | 1 | 1 | 0 | 10 | 3 | 2 | 4.98 |
| RP | Gallegos, G.Gallegos, Giovanny >> | 27 | 2019 | R | 100 | 77 | 0 | 6 | 3 | 3.47 | .275 | 1.11 | 7.1 | 2.9 | 11.6 | 111.2 | 88 | 44 | 43 | 18 | 36 | 143 | 0 | 3 | 3 | 0 | 0 | 3 | 3 | 3.59 |
| RP | Petit, Y.Petit, Yusmeiro >> | 35 | 2019 | R | 89 | 80 | 0 | 5 | 4 | 3.49 | .289 | 1.20 | 8.5 | 2.3 | 9.8 | 108.1 | 102 | 45 | 42 | 6 | 28 | 117 | 0 | 7 | 2 | 0 | 0 | 2 | 3 | 2.39 |
| RP | Gott, T.Gott, Trevor † >> | 26 | 2019 | R | 75 | 78 | 0 | 6 | 5 | 4.18 | .307 | 1.29 | 8.4 | 3.2 | 10.9 | 97.0 | 90 | 45 | 45 | 14 | 35 | 117 | 0 | 10 | 6 | 0 | 0 | 4 | 2 | 3.67 |
| RP | Walden, M.Walden, Marcus # >> | 30 | 2019 | R | 67 | 59 | 0 | 7 | 4 | 4.37 | .322 | 1.37 | 8.5 | 4.0 | 10.4 | 59.2 | 56 | 32 | 29 | 12 | 26 | 68 | 0 | 11 | 2 | 0 | 0 | 3 | 6 | 4.81 |
| RP | Stripling, R.Stripling, Ross >> | 29 | 2019 | R | 59 | 46 | 0 | 6 | 2 | 3.38 | .297 | 1.25 | 8.1 | 3.3 | 11.2 | 77.1 | 69 | 29 | 29 | 12 | 28 | 96 | 0 | 5 | 5 | 0 | 0 | 1 | 3 | 3.66 |