| SP | Bassitt, C.Bassitt, Chris >> | 32 | 2021 | R | 88 | 8 | 8 | 4 | 3 | 4.21 | .341 | 1.53 | 9.0 | 4.8 | 9.2 | 47.0 | 47 | 22 | 22 | 6 | 25 | 48 | 0 | 0 | 0 | 0 | 4 | 1 | 2 | 4.28 |
| SP | Quantrill, C.Quantrill, Cal >> | 26 | 2021 | R | 70 | 7 | 7 | 1 | 2 | 5.97 | .377 | 1.81 | 12.5 | 4.2 | 6.1 | 28.2 | 39 | 19 | 19 | 5 | 13 | 19 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5.36 |
| SU | Kopech, M.Kopech, Michael >> | 25 | 2021 | R | 81 | 13 | 0 | 0 | 0 | 2.51 | .204 | 0.77 | 4.5 | 2.6 | 11.6 | 14.1 | 7 | 4 | 4 | 1 | 4 | 18 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 2.21 |
| RP | Neris, H.Neris, Hector >> | 32 | 2021 | R | 78 | 20 | 0 | 0 | 1 | 3.21 | .243 | 0.93 | 5.5 | 2.9 | 11.3 | 28.0 | 17 | 10 | 10 | 5 | 9 | 35 | 0 | 0 | 1 | 0 | 0 | 1 | 2 | 3.89 |
| RP | Steckenrider, D.Steckenrider, Drew >> | 30 | 2021 | R | 78 | 20 | 0 | 1 | 0 | 2.51 | .218 | 0.84 | 6.4 | 1.3 | 8.0 | 28.2 | 20 | 8 | 8 | 5 | 4 | 25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3.96 |
| RP | Kennedy, I.Kennedy, Ian >> | 37 | 2021 | R | 76 | 15 | 0 | 1 | 1 | 3.86 | .319 | 1.35 | 9.0 | 3.4 | 11.3 | 16.1 | 16 | 7 | 7 | 2 | 6 | 20 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 3.44 |
| RP | Garcia, Y.Garcia, Yimi >> | 30 | 2021 | R | 67 | 11 | 0 | 0 | 0 | 0.00 | .205 | 0.77 | 6.5 | 0.8 | 8.2 | 11.2 | 8 | 0 | 0 | 0 | 1 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.45 |
| RP | Lamet, D.Lamet, Dinelson >> | 28 | 2021 | R | 31 | 10 | 0 | 3 | 0 | 2.84 | .321 | 1.42 | 9.0 | 3.8 | 9.5 | 19.0 | 19 | 7 | 6 | 4 | 8 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.89 |