| SP | Martinez, P.Martinez, Pedro >> | 29 | 2000 | R | 100 | 27 | 27 | 14 | 4 | 2.87 | .262 | 1.03 | 7.1 | 2.1 | 7.9 | 206.2 | 163 | 72 | 66 | 11 | 49 | 180 | 6 | 0 | 0 | 1 | 18 | 8 | 3 | 2.78 |
| SP | Smith, C.Smith, Charlie >> | 30 | 1910 | R | 10 | 26 | 26 | 6 | 16 | 6.80 | .358 | 1.64 | 10.9 | 3.9 | 4.2 | 144.1 | 174 | 111 | 109 | 21 | 63 | 67 | 0 | 0 | 0 | 0 | 9 | 4 | 4 | 5.36 |
| SP | Winter, G.Winter, George >> | 26 | 1904 | R | 7 | 26 | 26 | 7 | 12 | 5.90 | .336 | 1.49 | 11.0 | 2.5 | 4.0 | 154.0 | 188 | 104 | 101 | 34 | 42 | 69 | 0 | 0 | 0 | 0 | 10 | 4 | 0 | 5.87 |
| SP | Crawford, K.Crawford, Kutter # >> | 28 | 2024 | R | 19 | 13 | 13 | 1 | 8 | 5.77 | .331 | 1.46 | 9.8 | 3.4 | 7.1 | 68.2 | 74 | 47 | 44 | 12 | 26 | 54 | 0 | 0 | 0 | 0 | 4 | 2 | 2 | 4.94 |
| CL | Uehara, K.Uehara, Koji >> | 40 | 2015 | R | 50 | 49 | 0 | 2 | 12 | 3.59 | .313 | 1.32 | 8.8 | 3.3 | 9.6 | 47.2 | 46 | 19 | 19 | 4 | 17 | 50 | 0 | 29 | 3 | 0 | 0 | 2 | 2 | 3.19 |
| SU | Brasier, R.Brasier, Ryan >> | 30 | 2018 | R | 84 | 29 | 0 | 0 | 0 | 3.86 | .347 | 1.56 | 9.7 | 4.7 | 7.9 | 25.2 | 27 | 16 | 11 | 3 | 13 | 22 | 0 | 2 | 6 | 0 | 0 | 1 | 0 | 4.48 |
| RP | Papelbon, J.Papelbon, Jonathan >> | 28 | 2008 | R | 33 | 63 | 0 | 1 | 3 | 3.97 | .299 | 1.19 | 8.9 | 1.9 | 10.4 | 70.1 | 69 | 37 | 31 | 12 | 15 | 81 | 0 | 0 | 1 | 0 | 0 | 6 | 0 | 3.81 |
| RP | Tazawa, J.Tazawa, Junichi >> | 26 | 2012 | R | 30 | 20 | 0 | 0 | 1 | 1.37 | .234 | 0.86 | 5.7 | 2.4 | 7.1 | 19.2 | 12 | 4 | 3 | 0 | 5 | 15 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 2.37 |
| RP | O'Brien, B.O'Brien, Buck >> | 29 | 1911 | R | 28 | 16 | 0 | 0 | 0 | 4.10 | .336 | 1.44 | 6.2 | 6.9 | 5.9 | 26.1 | 18 | 13 | 12 | 1 | 20 | 17 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 4.73 |