| SP | Gonsolin, T.Gonsolin, Tony >> | 26 | 2020 | R | 93 | 17 | 17 | 4 | 7 | 5.42 | .330 | 1.43 | 10.4 | 2.5 | 9.6 | 88.0 | 102 | 53 | 53 | 18 | 24 | 94 | 0 | 0 | 0 | 0 | 4 | 4 | 1 | 4.48 |
| SP | Davies, Z.Davies, Zach >> | 27 | 2020 | R | 79 | 16 | 16 | 1 | 9 | 6.47 | .334 | 1.43 | 9.4 | 3.4 | 8.3 | 89.0 | 93 | 64 | 64 | 21 | 34 | 82 | 0 | 0 | 0 | 0 | 4 | 7 | 1 | 5.61 |
| SP | Valdez, F.Valdez, Framber >> | 26 | 2020 | L | 72 | 15 | 15 | 3 | 6 | 5.09 | .342 | 1.53 | 10.3 | 3.5 | 9.6 | 88.1 | 101 | 52 | 50 | 12 | 34 | 94 | 0 | 0 | 0 | 0 | 9 | 3 | 8 | 3.90 |
| SP | Greinke, Z.Greinke, Zack >> | 37 | 2020 | R | 60 | 16 | 15 | 2 | 9 | 8.16 | .356 | 1.65 | 12.0 | 2.9 | 9.0 | 78.1 | 104 | 71 | 71 | 24 | 25 | 78 | 0 | 0 | 0 | 0 | 4 | 1 | 4 | 6.00 |
| RP | Martin, C.Martin, Chris >> | 34 | 2020 | R | 97 | 46 | 0 | 3 | 1 | 2.41 | .228 | 0.80 | 4.9 | 2.3 | 10.9 | 71.0 | 39 | 19 | 19 | 6 | 18 | 86 | 0 | 1 | 3 | 0 | 0 | 6 | 0 | 2.69 |
| RP | Jeffress, J.Jeffress, Jeremy >> | 32 | 2020 | R | 82 | 47 | 0 | 4 | 5 | 4.92 | .320 | 1.36 | 7.8 | 4.5 | 8.0 | 60.1 | 52 | 33 | 33 | 12 | 30 | 53 | 0 | 5 | 2 | 0 | 0 | 3 | 0 | 5.48 |
| RP | Pagan, E.Pagan, Emilio >> | 29 | 2020 | R | 73 | 30 | 0 | 1 | 4 | 3.57 | .312 | 1.33 | 8.5 | 3.6 | 12.1 | 35.1 | 33 | 15 | 14 | 4 | 14 | 47 | 0 | 3 | 2 | 0 | 0 | 1 | 0 | 3.09 |
| RP | Trivino, L.Trivino, Lou >> | 28 | 2020 | R | 69 | 29 | 0 | 4 | 0 | 1.65 | .274 | 1.13 | 7.3 | 3.1 | 10.7 | 32.2 | 26 | 9 | 6 | 4 | 11 | 38 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 3.28 |
| RP | Johnson, P.Johnson, Pierce >> | 29 | 2020 | R | 61 | 26 | 0 | 0 | 1 | 5.17 | .319 | 1.40 | 9.3 | 3.5 | 9.6 | 31.1 | 32 | 18 | 18 | 7 | 12 | 33 | 0 | 5 | 1 | 0 | 0 | 0 | 1 | 4.97 |