| SP | Bumgarner, M.Bumgarner, Madison >> | 29 | 2019 | L | 78 | 38 | 38 | 11 | 20 | 4.78 | .315 | 1.34 | 9.4 | 2.8 | 8.5 | 231.2 | 240 | 129 | 123 | 42 | 71 | 219 | 1 | 0 | 0 | 0 | 18 | 8 | 4 | 4.49 |
| SP | Hernandez, F.Hernandez, Felix # >> | 33 | 2019 | R | 17 | 34 | 34 | 9 | 14 | 4.73 | .325 | 1.42 | 9.4 | 3.4 | 7.7 | 167.1 | 175 | 97 | 88 | 23 | 63 | 143 | 0 | 0 | 0 | 0 | 4 | 4 | 9 | 4.28 |
| SP | Waguespack, J.Waguespack, Jacob # >> | 25 | 2019 | R | 52 | 35 | 33 | 10 | 15 | 4.55 | .311 | 1.32 | 8.1 | 3.7 | 7.3 | 168.0 | 152 | 90 | 85 | 30 | 69 | 136 | 0 | 0 | 0 | 0 | 10 | 7 | 6 | 5.06 |
| SP | Bolanos, R.Bolanos, Ronald >> | 22 | 2019 | R | 42 | 33 | 21 | 2 | 8 | 5.77 | .383 | 1.82 | 9.6 | 6.9 | 9.0 | 96.2 | 102 | 68 | 62 | 15 | 74 | 96 | 0 | 0 | 1 | 0 | 0 | 4 | 0 | 5.47 |
| RP | Rogers, T.Rogers, Tyler >> | 28 | 2019 | R | 91 | 95 | 0 | 7 | 7 | 3.12 | .289 | 1.19 | 8.5 | 2.2 | 8.4 | 138.1 | 131 | 58 | 48 | 15 | 33 | 129 | 0 | 2 | 2 | 0 | 0 | 5 | 8 | 3.37 |
| RP | Romo, S.Romo, Sergio † >> | 36 | 2019 | R | 81 | 97 | 0 | 14 | 3 | 2.59 | .259 | 1.02 | 7.1 | 2.1 | 10.2 | 135.2 | 107 | 43 | 39 | 11 | 31 | 153 | 0 | 8 | 4 | 0 | 0 | 4 | 10 | 2.57 |
| RP | Moronta, R.Moronta, Reyes >> | 26 | 2019 | R | 74 | 96 | 0 | 4 | 4 | 2.72 | .307 | 1.31 | 7.7 | 4.1 | 12.0 | 115.2 | 98 | 41 | 35 | 4 | 53 | 153 | 0 | 10 | 4 | 0 | 0 | 3 | 5 | 2.25 |
| RP | Coonrod, S.Coonrod, Sam >> | 26 | 2019 | R | 72 | 81 | 0 | 0 | 6 | 4.05 | .287 | 1.20 | 6.3 | 4.5 | 8.5 | 100.0 | 70 | 48 | 45 | 10 | 50 | 94 | 0 | 10 | 4 | 0 | 0 | 1 | 2 | 3.95 |
| RP | Menez, C.Menez, Conner >> | 24 | 2019 | L | 60 | 71 | 0 | 4 | 3 | 3.55 | .333 | 1.47 | 7.5 | 5.8 | 12.4 | 111.2 | 93 | 44 | 44 | 12 | 71 | 153 | 0 | 8 | 1 | 0 | 0 | 3 | 8 | 3.65 |