| SP | Giolito, L.Giolito, Lucas >> | 24 | 2019 | R | 95 | 19 | 19 | 10 | 4 | 3.06 | .288 | 1.20 | 7.0 | 3.9 | 11.0 | 123.1 | 95 | 44 | 42 | 23 | 53 | 150 | 1 | 0 | 0 | 0 | 11 | 2 | 2 | 4.33 |
| SP | Morton, C.Morton, Charlie >> | 36 | 2019 | R | 92 | 19 | 19 | 8 | 7 | 4.30 | .291 | 1.18 | 7.5 | 3.2 | 12.6 | 119.1 | 99 | 57 | 57 | 11 | 42 | 166 | 1 | 0 | 0 | 1 | 9 | 6 | 4 | 2.62 |
| SP | Teheran, J.Teheran, Julio # >> | 28 | 2019 | R | 64 | 15 | 15 | 3 | 7 | 4.98 | .338 | 1.48 | 9.2 | 4.2 | 9.2 | 77.2 | 79 | 48 | 43 | 16 | 36 | 79 | 0 | 0 | 0 | 0 | 5 | 4 | 1 | 5.21 |
| SP | Soroka, M.Soroka, Mike # + >> | 21 | 2019 | R | 80 | 18 | 18 | 6 | 4 | 3.94 | .273 | 1.12 | 7.8 | 2.3 | 8.8 | 114.1 | 99 | 50 | 50 | 15 | 29 | 112 | 0 | 0 | 0 | 0 | 12 | 1 | 3 | 3.54 |
| RP | Diekman, J.Diekman, Jake >> | 32 | 2019 | L | 64 | 40 | 0 | 4 | 1 | 3.23 | .317 | 1.35 | 6.5 | 5.7 | 11.5 | 47.1 | 34 | 19 | 17 | 2 | 30 | 60 | 0 | 0 | 1 | 0 | 0 | 2 | 2 | 3.04 |
| RP | Newcomb, S.Newcomb, Sean >> | 26 | 2019 | L | 63 | 31 | 0 | 2 | 1 | 1.07 | .263 | 1.07 | 5.5 | 4.4 | 10.1 | 33.2 | 20 | 4 | 4 | 0 | 16 | 37 | 0 | 2 | 3 | 0 | 0 | 0 | 2 | 2.21 |
| SP | Strahm, M.Strahm, Matt >> | 27 | 2019 | L | 60 | 9 | 2 | 3 | 1 | 5.67 | .314 | 1.37 | 10.3 | 2.0 | 12.7 | 27.0 | 31 | 17 | 17 | 6 | 6 | 38 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3.74 |