| SP | Greinke, Z.Greinke, Zack >> | 32 | 2015 | R | 92 | 36 | 36 | 16 | 12 | 3.82 | .291 | 1.20 | 8.3 | 2.6 | 7.7 | 247.2 | 228 | 116 | 105 | 44 | 70 | 211 | 4 | 0 | 0 | 0 | 22 | 7 | 7 | 4.54 |
| SP | Clevinger, M.Clevinger, Mike >> | 28 | 2019 | R | 76 | 35 | 35 | 15 | 9 | 4.34 | .315 | 1.36 | 9.0 | 3.3 | 10.2 | 201.1 | 200 | 99 | 97 | 33 | 73 | 228 | 0 | 0 | 0 | 0 | 18 | 5 | 0 | 4.03 |
| SP | Severino, L.Severino, Luis >> | 23 | 2017 | R | 75 | 33 | 33 | 11 | 12 | 5.07 | .320 | 1.38 | 8.7 | 3.8 | 10.0 | 202.1 | 195 | 115 | 114 | 33 | 85 | 224 | 0 | 0 | 0 | 0 | 15 | 5 | 3 | 4.24 |
| SP | Buehler, W.Buehler, Walker # >> | 23 | 2018 | R | 90 | 29 | 28 | 11 | 5 | 4.52 | .306 | 1.30 | 8.6 | 3.1 | 10.3 | 167.1 | 160 | 88 | 84 | 18 | 57 | 191 | 0 | 0 | 0 | 0 | 14 | 4 | 3 | 3.21 |
| RP | Leclerc, J.Leclerc, Jose >> | 24 | 2018 | R | 88 | 87 | 0 | 8 | 4 | 3.18 | .303 | 1.25 | 6.3 | 5.0 | 10.6 | 99.0 | 69 | 35 | 35 | 8 | 55 | 117 | 0 | 6 | 7 | 0 | 0 | 5 | 0 | 3.51 |
| RP | Neris, H.Neris, Hector >> | 30 | 2019 | R | 36 | 16 | 0 | 3 | 0 | 13.50 | .429 | 2.25 | 18.0 | 3.6 | 11.7 | 10.2 | 20 | 16 | 16 | 5 | 4 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.10 |
| RP | Papelbon, J.Papelbon, Jonathan >> | 34 | 2014 | R | 45 | 18 | 0 | 1 | 1 | 2.70 | .286 | 1.20 | 7.2 | 3.6 | 6.8 | 20.0 | 16 | 6 | 6 | 4 | 8 | 15 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 5.30 |