| SP | Giolito, L.Giolito, Lucas † >> | 24 | 2019 | R | 96 | 24 | 24 | 14 | 4 | 2.85 | .276 | 1.11 | 6.1 | 3.9 | 9.7 | 170.1 | 116 | 54 | 54 | 19 | 73 | 184 | 1 | 0 | 0 | 0 | 18 | 6 | 4 | 3.68 |
| SP | Paddack, C.Paddack, Chris >> | 23 | 2019 | R | 97 | 23 | 23 | 12 | 7 | 4.48 | .301 | 1.28 | 8.0 | 3.5 | 10.0 | 148.2 | 132 | 76 | 74 | 23 | 58 | 165 | 0 | 0 | 0 | 0 | 11 | 2 | 2 | 4.01 |
| SP | Castillo, L.Castillo, Luis >> | 26 | 2019 | R | 88 | 22 | 22 | 7 | 5 | 3.22 | .288 | 1.18 | 5.7 | 4.9 | 9.5 | 137.0 | 87 | 50 | 49 | 17 | 75 | 144 | 0 | 0 | 0 | 0 | 12 | 4 | 9 | 4.24 |
| SP | Paxton, J.Paxton, James >> | 30 | 2019 | L | 65 | 21 | 21 | 6 | 8 | 5.62 | .317 | 1.38 | 9.0 | 3.5 | 10.9 | 125.0 | 125 | 79 | 78 | 23 | 48 | 152 | 0 | 0 | 0 | 0 | 9 | 1 | 3 | 4.14 |
| RP | Yates, K.Yates, Kirby † >> | 32 | 2019 | R | 99 | 50 | 0 | 3 | 5 | 4.13 | .283 | 1.16 | 6.8 | 3.9 | 9.6 | 56.2 | 42 | 26 | 26 | 8 | 24 | 60 | 0 | 24 | 3 | 0 | 0 | 1 | 1 | 4.05 |
| RP | Bummer, A.Bummer, Aaron >> | 25 | 2019 | L | 90 | 60 | 0 | 5 | 1 | 2.17 | .260 | 1.06 | 5.2 | 4.4 | 8.4 | 78.2 | 45 | 19 | 19 | 4 | 38 | 73 | 0 | 1 | 0 | 0 | 0 | 0 | 4 | 3.26 |
| SU | Britton, Z.Britton, Zach >> | 31 | 2019 | L | 83 | 44 | 0 | 2 | 2 | 4.08 | .329 | 1.45 | 7.8 | 5.3 | 5.7 | 46.1 | 40 | 23 | 21 | 6 | 27 | 29 | 0 | 5 | 4 | 0 | 0 | 1 | 3 | 5.26 |
| RP | Guerra, J.Guerra, Junior >> | 34 | 2019 | R | 82 | 50 | 0 | 7 | 0 | 4.25 | .340 | 1.55 | 8.3 | 5.6 | 6.5 | 53.0 | 49 | 26 | 25 | 7 | 33 | 38 | 0 | 2 | 0 | 0 | 0 | 0 | 4 | 5.15 |
| RP | Cishek, S.Cishek, Steven >> | 33 | 2019 | R | 74 | 38 | 0 | 3 | 2 | 3.38 | .301 | 1.27 | 6.0 | 5.6 | 6.6 | 42.2 | 28 | 16 | 16 | 2 | 26 | 31 | 0 | 2 | 0 | 0 | 0 | 1 | 1 | 4.07 |
| SP | German, D.German, Domingo >> | 26 | 2019 | R | 81 | 5 | 1 | 0 | 1 | 9.72 | .419 | 2.16 | 13.5 | 6.8 | 15.8 | 8.1 | 12 | 9 | 9 | 5 | 6 | 14 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 9.88 |