| SP | Buehler, W.Buehler, Walker >> | 23 | 2018 | R | 90 | 25 | 25 | 9 | 7 | 3.82 | .288 | 1.18 | 8.1 | 2.6 | 9.2 | 153.1 | 137 | 67 | 65 | 16 | 44 | 157 | 0 | 0 | 0 | 0 | 16 | 5 | 3 | 3.27 |
| SP | Lackey, J.Lackey, John >> | 38 | 2016 | R | 60 | 24 | 24 | 10 | 8 | 5.26 | .328 | 1.42 | 8.8 | 3.9 | 7.3 | 149.0 | 146 | 87 | 87 | 24 | 65 | 121 | 4 | 0 | 0 | 0 | 11 | 7 | 3 | 4.92 |
| RP | Chapman, A.Chapman, Aroldis # >> | 24 | 2012 | L | 93 | 62 | 0 | 6 | 4 | 4.80 | .297 | 1.23 | 7.0 | 4.2 | 12.0 | 80.2 | 62 | 47 | 43 | 10 | 37 | 107 | 0 | 4 | 4 | 0 | 0 | 3 | 5 | 3.45 |
| RP | Leclerc, J.Leclerc, Jose † >> | 24 | 2018 | R | 89 | 64 | 0 | 7 | 2 | 2.80 | .268 | 1.08 | 6.1 | 3.7 | 11.8 | 83.2 | 56 | 26 | 26 | 8 | 34 | 109 | 0 | 4 | 5 | 0 | 0 | 2 | 2 | 2.93 |
| RP | Boxberger, B.Boxberger, Brad † >> | 26 | 2014 | R | 88 | 54 | 0 | 7 | 3 | 2.34 | .268 | 1.07 | 6.0 | 3.7 | 11.5 | 69.1 | 46 | 19 | 18 | 5 | 28 | 88 | 0 | 7 | 3 | 0 | 0 | 2 | 1 | 2.70 |
| RP | Treinen, B.Treinen, Blake >> | 30 | 2018 | R | 80 | 44 | 0 | 3 | 4 | 4.01 | .258 | 0.98 | 6.4 | 2.5 | 10.7 | 58.1 | 41 | 26 | 26 | 4 | 16 | 69 | 0 | 7 | 4 | 0 | 0 | 4 | 1 | 2.55 |
| RP | Devenski, C.Devenski, Chris >> | 26 | 2017 | R | 49 | 32 | 0 | 2 | 2 | 3.97 | .363 | 1.68 | 9.8 | 5.3 | 9.5 | 34.0 | 37 | 16 | 15 | 2 | 20 | 36 | 0 | 1 | 2 | 0 | 0 | 1 | 1 | 3.50 |
| SP | Halladay, R.Halladay, Roy >> | 33 | 2010 | R | 44 | 14 | 0 | 0 | 2 | 5.64 | .323 | 1.43 | 11.5 | 1.6 | 9.8 | 22.1 | 28 | 19 | 14 | 7 | 4 | 24 | 0 | 2 | 1 | 0 | 0 | 0 | 1 | 5.50 |