| SP | Arellanes, F.Arellanes, Frank >> | 27 | 1909 | R | 44 | 28 | 27 | 10 | 10 | 4.56 | .307 | 1.31 | 9.3 | 2.5 | 4.8 | 136.1 | 140 | 74 | 69 | 18 | 38 | 72 | 0 | 0 | 0 | 0 | 7 | 3 | 1 | 4.57 |
| SP | Butland, B.Butland, Bill >> | 24 | 1942 | R | 47 | 28 | 27 | 7 | 8 | 5.87 | .358 | 1.64 | 10.9 | 3.9 | 4.2 | 122.2 | 148 | 87 | 80 | 22 | 53 | 57 | 0 | 0 | 0 | 0 | 4 | 4 | 3 | 5.81 |
| CL | Tazawa, J.Tazawa, Junichi >> | 26 | 2012 | R | 37 | 55 | 0 | 5 | 2 | 3.00 | .275 | 1.11 | 7.9 | 2.1 | 8.5 | 57.0 | 50 | 20 | 19 | 5 | 13 | 54 | 0 | 29 | 2 | 0 | 0 | 2 | 0 | 3.04 |
| SU | Uehara, K.Uehara, Koji >> | 39 | 2014 | R | 45 | 57 | 0 | 1 | 2 | 4.80 | .302 | 1.30 | 8.9 | 2.9 | 9.2 | 60.0 | 59 | 41 | 32 | 17 | 19 | 61 | 0 | 3 | 5 | 0 | 0 | 0 | 1 | 5.60 |
| RP | Papelbon, J.Papelbon, Jonathan >> | 31 | 2011 | R | 46 | 75 | 0 | 11 | 1 | 4.05 | .317 | 1.37 | 9.2 | 3.2 | 9.6 | 95.2 | 97 | 45 | 43 | 9 | 34 | 101 | 0 | 3 | 2 | 0 | 0 | 2 | 1 | 3.24 |
| RP | Brasier, R.Brasier, Ryan >> | 30 | 2018 | R | 83 | 63 | 0 | 4 | 1 | 3.20 | .271 | 1.08 | 7.1 | 2.7 | 6.1 | 81.2 | 64 | 35 | 29 | 8 | 24 | 55 | 0 | 0 | 3 | 0 | 0 | 3 | 3 | 3.93 |
| RP | Atchison, S.Atchison, Scott >> | 36 | 2012 | R | 28 | 48 | 0 | 5 | 1 | 3.14 | .284 | 1.14 | 8.1 | 2.1 | 6.9 | 63.0 | 57 | 28 | 22 | 6 | 15 | 48 | 0 | 1 | 0 | 0 | 0 | 3 | 1 | 3.57 |