| SP | Greinke, Z.Greinke, Zack >> | 39 | 2019 | R | 44 | 34 | 34 | 8 | 18 | 5.82 | .336 | 1.51 | 9.9 | 3.7 | 6.8 | 171.2 | 188 | 122 | 111 | 38 | 71 | 129 | 0 | 0 | 0 | 0 | 14 | 2 | 1 | 5.66 |
| SP | Maddux, G.Maddux, Greg >> | 35 | 1999 | R | 1 | 33 | 33 | 3 | 17 | 6.40 | .347 | 1.54 | 11.1 | 2.9 | 6.3 | 161.2 | 198 | 122 | 115 | 37 | 51 | 112 | 0 | 0 | 0 | 0 | 9 | 9 | 3 | 5.71 |
| SP | Hampton, M.Hampton, Mike >> | 29 | 1999 | L | 32 | 34 | 33 | 13 | 12 | 5.08 | .338 | 1.52 | 9.4 | 4.3 | 7.7 | 200.1 | 208 | 124 | 113 | 32 | 96 | 171 | 2 | 0 | 0 | 1 | 14 | 3 | 4 | 4.86 |
| SP | Bumgarner, M.Bumgarner, Madison >> | 32 | 2019 | L | 27 | 31 | 30 | 3 | 15 | 5.82 | .334 | 1.47 | 10.5 | 2.7 | 7.7 | 147.0 | 172 | 103 | 95 | 32 | 44 | 125 | 0 | 0 | 0 | 0 | 11 | 5 | 2 | 5.13 |
| RP | Barnes, M.Barnes, Matt >> | 32 | 2019 | R | 12 | 100 | 0 | 2 | 5 | 4.86 | .323 | 1.39 | 8.0 | 4.6 | 11.3 | 90.2 | 80 | 57 | 49 | 16 | 46 | 113 | 0 | 0 | 2 | 0 | 0 | 4 | 16 | 4.47 |
| RP | Jimenez, J.Jimenez, Joe >> | 27 | 2019 | R | 65 | 81 | 0 | 5 | 1 | 2.84 | .255 | 1.01 | 7.0 | 2.1 | 10.6 | 111.0 | 86 | 35 | 35 | 9 | 26 | 131 | 0 | 1 | 2 | 0 | 0 | 2 | 1 | 2.45 |
| SU | Miller, A.Miller, Andrew >> | 37 | 2019 | L | 3 | 73 | 0 | 2 | 4 | 6.36 | .360 | 1.66 | 10.4 | 4.6 | 10.0 | 69.1 | 80 | 50 | 49 | 19 | 35 | 77 | 0 | 1 | 6 | 0 | 0 | 2 | 5 | 5.96 |
| CL | Osuna, R.Osuna, Roberto >> | 27 | 2019 | R | 93 | 80 | 0 | 3 | 16 | 5.52 | .339 | 1.47 | 9.5 | 3.8 | 10.7 | 89.2 | 94 | 56 | 55 | 20 | 38 | 106 | 0 | 25 | 6 | 0 | 0 | 6 | 2 | 5.02 |
| SP | Paxton, J.Paxton, James >> | 33 | 2019 | L | 8 | 36 | 1 | 3 | 3 | 4.54 | .329 | 1.45 | 9.7 | 3.3 | 11.1 | 121.0 | 130 | 62 | 61 | 18 | 45 | 149 | 0 | 0 | 1 | 0 | 0 | 3 | 5 | 3.66 |