| SP | Giolito, L.Giolito, Lucas † >> | 24 | 2019 | R | 96 | 37 | 37 | 19 | 6 | 2.66 | .279 | 1.14 | 6.6 | 3.7 | 11.1 | 240.2 | 176 | 75 | 71 | 32 | 98 | 297 | 1 | 0 | 0 | 0 | 25 | 5 | 3 | 3.55 |
| SP | Morton, C.Morton, Charlie >> | 36 | 2019 | R | 92 | 36 | 36 | 17 | 13 | 4.00 | .281 | 1.14 | 7.5 | 2.8 | 11.3 | 231.2 | 192 | 109 | 103 | 24 | 72 | 291 | 2 | 0 | 0 | 2 | 20 | 7 | 5 | 2.86 |
| SP | Teheran, J.Teheran, Julio # >> | 28 | 2019 | R | 64 | 31 | 31 | 11 | 12 | 4.95 | .337 | 1.47 | 9.3 | 3.9 | 9.3 | 161.2 | 167 | 94 | 89 | 24 | 70 | 167 | 0 | 0 | 0 | 0 | 10 | 9 | 4 | 4.34 |
| SP | Soroka, M.Soroka, Mike # + >> | 21 | 2019 | R | 80 | 33 | 33 | 13 | 5 | 3.68 | .293 | 1.22 | 8.5 | 2.5 | 8.7 | 207.2 | 196 | 86 | 85 | 22 | 58 | 199 | 0 | 0 | 0 | 0 | 21 | 4 | 6 | 3.36 |
| SP | Strahm, M.Strahm, Matt # >> | 27 | 2019 | L | 60 | 20 | 2 | 6 | 2 | 4.53 | .302 | 1.30 | 9.8 | 2.1 | 11.5 | 57.2 | 62 | 30 | 29 | 11 | 13 | 73 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 3.63 |
| RP | Diekman, J.Diekman, Jake >> | 32 | 2019 | L | 64 | 82 | 0 | 7 | 2 | 3.84 | .337 | 1.48 | 6.4 | 7.0 | 10.9 | 86.2 | 61 | 39 | 37 | 5 | 67 | 104 | 0 | 3 | 3 | 0 | 0 | 4 | 7 | 3.81 |
| RP | Newcomb, S.Newcomb, Sean >> | 26 | 2019 | L | 63 | 58 | 0 | 5 | 1 | 1.55 | .257 | 1.02 | 5.3 | 4.0 | 10.4 | 63.2 | 37 | 11 | 11 | 3 | 28 | 73 | 0 | 4 | 3 | 0 | 0 | 1 | 2 | 2.68 |