| SP | Flaherty, J.Flaherty, Jack † >> | 23 | 2019 | R | 98 | 35 | 35 | 18 | 5 | 3.33 | .278 | 1.13 | 7.4 | 2.9 | 10.5 | 232.2 | 190 | 90 | 86 | 35 | 74 | 271 | 0 | 0 | 0 | 0 | 25 | 5 | 3 | 3.65 |
| SP | Giolito, L.Giolito, Lucas >> | 24 | 2019 | R | 95 | 35 | 35 | 18 | 8 | 3.82 | .286 | 1.18 | 7.1 | 3.5 | 11.0 | 231.0 | 183 | 102 | 98 | 30 | 89 | 283 | 2 | 0 | 0 | 2 | 23 | 5 | 8 | 3.46 |
| SP | Wheeler, Z.Wheeler, Zack † # >> | 29 | 2019 | R | 53 | 33 | 33 | 22 | 8 | 4.21 | .303 | 1.25 | 8.3 | 3.0 | 9.9 | 220.0 | 203 | 111 | 103 | 33 | 73 | 242 | 1 | 0 | 0 | 0 | 18 | 11 | 5 | 3.90 |
| RP | Petit, Y.Petit, Yusmeiro >> | 35 | 2019 | R | 88 | 78 | 0 | 5 | 4 | 1.96 | .260 | 1.02 | 6.7 | 2.5 | 9.0 | 87.1 | 65 | 20 | 19 | 5 | 24 | 87 | 0 | 5 | 5 | 0 | 0 | 3 | 1 | 2.68 |
| RP | Moronta, R.Moronta, Reyes >> | 26 | 2019 | R | 61 | 60 | 0 | 3 | 2 | 3.47 | .304 | 1.29 | 7.3 | 4.4 | 11.1 | 59.2 | 48 | 27 | 23 | 9 | 29 | 73 | 0 | 6 | 1 | 0 | 0 | 1 | 0 | 4.03 |
| RP | Givens, M.Givens, Mychal >> | 29 | 2019 | R | 74 | 45 | 0 | 0 | 1 | 3.80 | .308 | 1.29 | 8.6 | 3.2 | 10.3 | 42.2 | 40 | 18 | 18 | 8 | 15 | 48 | 0 | 4 | 1 | 0 | 0 | 2 | 3 | 4.40 |
| RP | Leclerc, J.Leclerc, Jose >> | 25 | 2019 | R | 55 | 31 | 0 | 0 | 0 | 4.09 | .336 | 1.45 | 9.0 | 4.1 | 12.0 | 33.0 | 33 | 15 | 15 | 3 | 15 | 44 | 0 | 0 | 1 | 0 | 0 | 2 | 1 | 3.06 |
| SP | Lamet, D.Lamet, Dinelson † >> | 26 | 2019 | R | 72 | 31 | 30 | 14 | 8 | 4.54 | .297 | 1.23 | 8.4 | 2.7 | 11.2 | 168.1 | 156 | 87 | 85 | 34 | 51 | 209 | 0 | 0 | 0 | 0 | 14 | 6 | 7 | 4.16 |