| SP | Flaherty, J.Flaherty, Jack | 37 | Giants | R | 85 | 32 | 32 | 16 | 6 | 3.23 | .277 | 1.13 | 7.4 | 2.8 | 9.3 | 203.1 | 167 | 77 | 73 | 20 | 63 | 209 | 2 | 0 | 0 | 2 | 22 | 4 | 5 | 3.21 |
| SP | Paddack, C.Paddack, Chris | 37 | Pirates | R | 92 | 32 | 32 | 18 | 9 | 3.41 | .282 | 1.16 | 7.8 | 2.7 | 9.3 | 197.2 | 170 | 79 | 75 | 22 | 60 | 204 | 0 | 0 | 0 | 0 | 19 | 3 | 1 | 3.34 |
| SP | Rogers, T.Rogers, Trevor # | 28 | Nationals | L | 97 | 33 | 31 | 16 | 9 | 3.79 | .282 | 1.16 | 8.0 | 2.4 | 6.9 | 214.0 | 191 | 95 | 90 | 30 | 57 | 165 | 11 | 0 | 0 | 2 | 17 | 4 | 3 | 4.14 |
| SP | Widener, T.Widener, Taylor | 27 | Padres | R | 95 | 32 | 32 | 17 | 9 | 3.60 | .282 | 1.14 | 7.7 | 2.6 | 7.4 | 247.1 | 210 | 104 | 99 | 25 | 72 | 203 | 10 | 0 | 0 | 1 | 18 | 9 | 8 | 3.66 |
| RP | Castellanos, H.Castellanos, Humberto | 30 | Diamondbacks | R | 95 | 83 | 0 | 8 | 4 | 2.85 | .272 | 1.12 | 7.2 | 2.9 | 7.3 | 167.1 | 133 | 62 | 53 | 14 | 54 | 136 | 0 | 10 | 3 | 0 | 0 | 1 | 3 | 3.45 |
| RP | Javier, C.Javier, Cristian | 33 | Padres | R | 94 | 77 | 0 | 10 | 9 | 2.64 | .290 | 1.20 | 7.1 | 3.7 | 10.3 | 136.1 | 107 | 44 | 40 | 11 | 56 | 156 | 0 | 14 | 6 | 0 | 0 | 4 | 6 | 3.08 |
| RP | Maiava, M.Maiava, Marcus + | 33 | Braves | L | 48 | 71 | 0 | 9 | 4 | 3.61 | .262 | 1.03 | 6.6 | 2.7 | 7.1 | 84.2 | 62 | 44 | 34 | 15 | 25 | 66 | 0 | 4 | 2 | 0 | 0 | 3 | 5 | 4.75 |