| SP | Giolito, L.Giolito, Lucas >> | 24 | 2019 | R | 96 | 38 | 38 | 18 | 6 | 3.35 | .302 | 1.26 | 8.0 | 3.3 | 10.3 | 242.0 | 215 | 92 | 90 | 14 | 89 | 278 | 0 | 0 | 0 | 0 | 23 | 10 | 4 | 2.68 |
| SP | Strasburg, S.Strasburg, Stephen † >> | 30 | 2019 | R | 95 | 38 | 38 | 21 | 11 | 2.94 | .273 | 1.09 | 6.9 | 2.9 | 11.4 | 263.1 | 202 | 86 | 86 | 27 | 86 | 334 | 1 | 0 | 0 | 1 | 29 | 9 | 4 | 2.88 |
| SP | Pruitt, A.Pruitt, Austin # >> | 29 | 2019 | R | 59 | 32 | 32 | 0 | 8 | 6.31 | .357 | 1.61 | 10.9 | 3.5 | 9.3 | 107.0 | 130 | 76 | 75 | 22 | 42 | 110 | 0 | 0 | 0 | 0 | 0 | 6 | 3 | 4.96 |
| SP | Cashner, A.Cashner, Andrew >> | 32 | 2019 | R | 47 | 27 | 22 | 1 | 11 | 6.30 | .339 | 1.51 | 10.8 | 2.9 | 9.8 | 85.2 | 102 | 62 | 60 | 16 | 27 | 93 | 0 | 2 | 0 | 0 | 0 | 3 | 6 | 4.32 |
| RP | Rivero, F.Rivero, Felipe >> | 27 | 2019 | L | 98 | 108 | 0 | 19 | 3 | 3.05 | .289 | 1.17 | 7.7 | 2.9 | 10.1 | 115.0 | 98 | 44 | 39 | 9 | 37 | 129 | 0 | 1 | 1 | 0 | 0 | 5 | 5 | 2.87 |
| RP | Cordero, J.Cordero, Jimmy >> | 27 | 2019 | R | 88 | 105 | 0 | 11 | 7 | 2.69 | .248 | 0.96 | 6.2 | 2.4 | 7.8 | 140.2 | 97 | 43 | 42 | 15 | 38 | 122 | 0 | 3 | 3 | 0 | 0 | 4 | 2 | 3.55 |
| CL | Adams, A.Adams, Austin >> | 28 | 2019 | R | 94 | 77 | 0 | 2 | 6 | 3.40 | .279 | 1.13 | 6.4 | 3.9 | 13.9 | 79.1 | 56 | 30 | 30 | 10 | 34 | 122 | 0 | 39 | 6 | 0 | 0 | 2 | 5 | 2.92 |
| RP | Rainey, T.Rainey, Tanner >> | 26 | 2019 | R | 67 | 80 | 0 | 3 | 6 | 4.52 | .324 | 1.41 | 5.9 | 6.8 | 11.4 | 91.2 | 60 | 46 | 46 | 14 | 69 | 115 | 0 | 1 | 2 | 0 | 0 | 3 | 6 | 4.85 |
| RP | Stammen, C.Stammen, Craig >> | 35 | 2019 | R | 64 | 65 | 0 | 4 | 1 | 3.62 | .331 | 1.49 | 9.9 | 3.6 | 9.5 | 74.2 | 81 | 30 | 30 | 11 | 30 | 78 | 0 | 1 | 2 | 0 | 0 | 0 | 0 | 4.04 |