| SP | Flaherty, J.Flaherty, Jack # >> | 23 | 2019 | R | 91 | 29 | 29 | 10 | 12 | 4.67 | .311 | 1.32 | 8.8 | 3.2 | 10.9 | 167.2 | 163 | 91 | 87 | 27 | 59 | 203 | 2 | 0 | 0 | 1 | 14 | 5 | 4 | 3.82 |
| SP | Morton, C.Morton, Charlie >> | 36 | 2019 | R | 55 | 29 | 28 | 6 | 14 | 7.37 | .358 | 1.64 | 11.2 | 3.6 | 10.5 | 141.2 | 176 | 119 | 116 | 28 | 56 | 165 | 0 | 0 | 0 | 0 | 7 | 5 | 7 | 4.54 |
| SP | Bieber, S.Bieber, Shane >> | 24 | 2019 | R | 50 | 27 | 27 | 8 | 13 | 5.45 | .352 | 1.59 | 11.0 | 3.4 | 10.0 | 153.2 | 187 | 93 | 93 | 32 | 57 | 170 | 0 | 0 | 0 | 0 | 11 | 6 | 4 | 4.73 |
| SP | Paxton, J.Paxton, James >> | 29 | 2018 | L | 45 | 28 | 26 | 8 | 11 | 6.43 | .357 | 1.64 | 10.9 | 3.8 | 10.5 | 140.0 | 170 | 106 | 100 | 37 | 59 | 164 | 0 | 0 | 0 | 0 | 7 | 4 | 7 | 5.44 |
| RP | Osuna, R.Osuna, Roberto >> | 22 | 2017 | R | 61 | 69 | 0 | 2 | 4 | 4.92 | .305 | 1.29 | 9.4 | 2.2 | 9.5 | 93.1 | 97 | 52 | 51 | 12 | 23 | 98 | 0 | 8 | 3 | 0 | 0 | 3 | 0 | 3.41 |
| RP | Papelbon, J.Papelbon, Jonathan >> | 34 | 2014 | R | 45 | 72 | 0 | 4 | 3 | 5.86 | .338 | 1.51 | 11.1 | 2.5 | 6.6 | 78.1 | 96 | 51 | 51 | 17 | 22 | 57 | 0 | 3 | 4 | 0 | 0 | 2 | 1 | 5.29 |
| RP | Phelps, D.Phelps, David >> | 29 | 2016 | R | 20 | 50 | 0 | 4 | 3 | 7.41 | .352 | 1.57 | 8.3 | 6.0 | 11.7 | 54.2 | 50 | 45 | 45 | 10 | 36 | 70 | 0 | 2 | 3 | 0 | 0 | 3 | 0 | 4.98 |
| SP | Bailey, H.Bailey, Homer >> | 27 | 2013 | R | 30 | 24 | 2 | 2 | 2 | 7.45 | .366 | 1.69 | 12.7 | 2.7 | 8.8 | 54.1 | 76 | 46 | 45 | 14 | 16 | 53 | 0 | 0 | 0 | 0 | 1 | 2 | 0 | 5.41 |