| SP | Verlander, J.Verlander, Justin >> | 36 | 2019 | R | 99 | 17 | 17 | 8 | 4 | 2.51 | .259 | 1.05 | 7.3 | 2.1 | 8.0 | 122.0 | 99 | 34 | 34 | 9 | 29 | 108 | 1 | 0 | 0 | 1 | 16 | 0 | 0 | 2.90 |
| SP | Nelson, R.Nelson, Roger >> | 28 | 1972 | R | 84 | 14 | 14 | 5 | 3 | 4.03 | .323 | 1.43 | 9.6 | 3.3 | 5.3 | 76.0 | 81 | 40 | 34 | 12 | 28 | 45 | 0 | 0 | 0 | 0 | 6 | 0 | 2 | 4.97 |
| CL | Jansen, K.Jansen, Kenley † >> | 28 | 2016 | R | 97 | 33 | 0 | 0 | 5 | 4.88 | .324 | 1.40 | 8.7 | 4.1 | 7.5 | 31.1 | 30 | 17 | 17 | 3 | 14 | 26 | 0 | 23 | 5 | 0 | 0 | 1 | 1 | 4.03 |
| SU | Papelbon, J.Papelbon, Jonathan >> | 27 | 2007 | R | 92 | 32 | 0 | 0 | 4 | 5.35 | .279 | 1.13 | 7.9 | 2.5 | 10.4 | 33.2 | 29 | 20 | 20 | 5 | 9 | 38 | 0 | 0 | 4 | 0 | 0 | 1 | 0 | 3.58 |
| RP | Gallegos, G.Gallegos, Giovanny >> | 27 | 2019 | R | 82 | 19 | 0 | 2 | 5 | 6.91 | .427 | 2.09 | 10.9 | 8.4 | 10.3 | 14.1 | 17 | 15 | 11 | 1 | 13 | 16 | 0 | 0 | 1 | 0 | 0 | 2 | 0 | 4.86 |
| RP | Devine, J.Devine, Joey >> | 25 | 2008 | R | 80 | 7 | 0 | 0 | 0 | 1.42 | .208 | 0.79 | 3.0 | 4.5 | 7.5 | 6.1 | 2 | 1 | 1 | 0 | 3 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.83 |
| RP | Pagan, E.Pagan, Emilio >> | 28 | 2019 | R | 77 | 15 | 0 | 2 | 0 | 6.62 | .398 | 1.92 | 11.6 | 6.4 | 9.5 | 17.2 | 22 | 13 | 13 | 1 | 12 | 18 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 3.94 |
| SP | Hendrix, C.Hendrix, Claude >> | 25 | 1914 | R | 69 | 4 | 2 | 0 | 1 | 6.23 | .333 | 1.50 | 9.0 | 4.8 | 6.4 | 17.1 | 17 | 12 | 12 | 2 | 9 | 12 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 4.71 |