| SP | Flaherty, J.Flaherty, Jack >> | 23 | 2019 | R | 98 | 38 | 38 | 12 | 7 | 3.55 | .308 | 1.29 | 8.0 | 3.6 | 9.8 | 240.2 | 214 | 103 | 95 | 32 | 97 | 262 | 1 | 0 | 0 | 1 | 25 | 11 | 7 | 3.90 |
| SP | Castillo, L.Castillo, Luis # >> | 26 | 2019 | R | 87 | 36 | 36 | 15 | 11 | 4.33 | .325 | 1.41 | 8.5 | 4.2 | 10.4 | 212.0 | 200 | 107 | 102 | 32 | 98 | 246 | 0 | 0 | 0 | 0 | 13 | 8 | 8 | 4.14 |
| SP | Odorizzi, J.Odorizzi, Jake >> | 29 | 2019 | R | 74 | 33 | 33 | 12 | 8 | 5.10 | .323 | 1.39 | 9.1 | 3.5 | 10.8 | 180.0 | 181 | 104 | 102 | 35 | 69 | 216 | 0 | 0 | 0 | 0 | 9 | 8 | 6 | 4.41 |
| SP | Pineda, M.Pineda, Michael >> | 30 | 2019 | R | 65 | 35 | 35 | 15 | 10 | 5.59 | .338 | 1.49 | 10.6 | 2.8 | 7.8 | 196.1 | 231 | 127 | 122 | 49 | 62 | 170 | 0 | 0 | 0 | 0 | 10 | 8 | 13 | 5.59 |
| RP | Gallegos, G.Gallegos, Giovanny >> | 27 | 2019 | R | 100 | 89 | 0 | 7 | 4 | 3.50 | .287 | 1.16 | 8.1 | 2.3 | 10.7 | 131.0 | 118 | 52 | 51 | 22 | 34 | 156 | 0 | 5 | 6 | 0 | 0 | 6 | 5 | 3.72 |
| RP | Harris, W.Harris, Will † >> | 34 | 2019 | R | 88 | 97 | 0 | 11 | 6 | 3.70 | .260 | 1.02 | 7.6 | 1.6 | 11.5 | 133.2 | 113 | 57 | 55 | 20 | 23 | 170 | 0 | 6 | 4 | 0 | 0 | 5 | 4 | 3.03 |
| RP | Britton, Z.Britton, Zach † >> | 31 | 2019 | L | 76 | 89 | 0 | 4 | 5 | 3.55 | .328 | 1.42 | 6.8 | 6.0 | 8.3 | 104.0 | 79 | 46 | 41 | 9 | 69 | 96 | 0 | 13 | 3 | 0 | 0 | 4 | 3 | 4.38 |
| RP | Walden, M.Walden, Marcus >> | 30 | 2019 | R | 67 | 75 | 0 | 3 | 7 | 3.01 | .283 | 1.15 | 7.2 | 3.2 | 9.4 | 77.2 | 62 | 33 | 26 | 7 | 27 | 80 | 0 | 12 | 3 | 0 | 0 | 3 | 0 | 3.27 |
| RP | Stripling, R.Stripling, Ross >> | 29 | 2019 | R | 59 | 49 | 0 | 7 | 4 | 5.36 | .340 | 1.52 | 10.8 | 3.0 | 11.3 | 90.2 | 108 | 57 | 54 | 17 | 30 | 113 | 0 | 3 | 2 | 0 | 0 | 2 | 4 | 4.01 |