| SP | Carrasco, C.Carrasco, Carlos >> | 27 | 2014 | R | 84 | 27 | 27 | 0 | 6 | 6.04 | .374 | 1.74 | 12.7 | 2.9 | 9.6 | 89.1 | 126 | 62 | 60 | 12 | 29 | 95 | 0 | 0 | 0 | 0 | 0 | 5 | 4 | 3.76 |
| SP | Foltynewicz, M.Foltynewicz, Michael >> | 26 | 2018 | R | 66 | 29 | 27 | 5 | 7 | 5.75 | .347 | 1.57 | 9.7 | 4.5 | 10.2 | 139.1 | 150 | 100 | 89 | 32 | 69 | 158 | 1 | 1 | 0 | 0 | 8 | 3 | 5 | 5.27 |
| SP | Porcello, R.Porcello, Rick >> | 27 | 2016 | R | 58 | 31 | 26 | 10 | 11 | 5.30 | .331 | 1.47 | 10.8 | 2.4 | 8.0 | 158.0 | 190 | 101 | 93 | 30 | 42 | 140 | 2 | 1 | 0 | 0 | 12 | 3 | 2 | 4.55 |
| RP | Kimbrel, C.Kimbrel, Craig >> | 29 | 2017 | R | 100 | 97 | 0 | 8 | 5 | 4.03 | .298 | 1.23 | 7.1 | 4.0 | 12.0 | 131.2 | 104 | 64 | 59 | 13 | 58 | 174 | 0 | 6 | 3 | 0 | 0 | 6 | 8 | 3.10 |
| RP | Boxberger, B.Boxberger, Brad >> | 26 | 2014 | R | 87 | 89 | 0 | 5 | 3 | 2.45 | .256 | 1.03 | 5.9 | 3.4 | 10.6 | 121.0 | 79 | 35 | 33 | 9 | 46 | 143 | 0 | 6 | 3 | 0 | 0 | 0 | 3 | 2.74 |
| RP | Treinen, B.Treinen, Blake >> | 30 | 2018 | R | 79 | 78 | 0 | 10 | 7 | 3.87 | .288 | 1.20 | 7.1 | 3.7 | 10.4 | 102.1 | 81 | 44 | 44 | 12 | 42 | 118 | 0 | 5 | 4 | 0 | 0 | 1 | 4 | 3.48 |
| RP | Betancourt, R.Betancourt, Rafael >> | 36 | 2011 | R | 52 | 59 | 0 | 6 | 4 | 4.26 | .311 | 1.34 | 9.2 | 2.9 | 11.1 | 80.1 | 82 | 40 | 38 | 13 | 26 | 99 | 0 | 2 | 2 | 0 | 0 | 1 | 5 | 3.65 |