| SP | Martinez, P.Martinez, Pedro >> | 29 | 2000 | R | 100 | 36 | 36 | 19 | 13 | 3.03 | .274 | 1.12 | 7.8 | 2.3 | 9.3 | 282.1 | 243 | 100 | 95 | 30 | 73 | 290 | 7 | 0 | 0 | 2 | 24 | 4 | 3 | 3.15 |
| SP | Shore, E.Shore, Ernie # >> | 23 | 1914 | R | 66 | 33 | 33 | 15 | 10 | 4.31 | .299 | 1.27 | 9.0 | 2.4 | 5.8 | 217.0 | 217 | 110 | 104 | 17 | 58 | 139 | 7 | 0 | 0 | 3 | 19 | 3 | 3 | 3.58 |
| SP | Steele, E.Steele, Elmer † >> | 22 | 1908 | R | 83 | 32 | 31 | 18 | 8 | 3.60 | .289 | 1.19 | 8.8 | 2.0 | 5.0 | 232.2 | 227 | 100 | 93 | 19 | 51 | 129 | 11 | 0 | 0 | 2 | 18 | 6 | 0 | 3.69 |
| RP | Uehara, K.Uehara, Koji † >> | 38 | 2013 | R | 100 | 92 | 0 | 15 | 4 | 2.97 | .243 | 0.96 | 6.8 | 1.8 | 9.9 | 121.1 | 92 | 44 | 40 | 21 | 24 | 133 | 0 | 11 | 6 | 0 | 0 | 1 | 4 | 3.68 |
| RP | Kimbrel, C.Kimbrel, Craig >> | 29 | 2017 | R | 98 | 70 | 0 | 2 | 0 | 2.29 | .249 | 0.97 | 5.9 | 2.8 | 10.7 | 98.1 | 64 | 25 | 25 | 11 | 31 | 116 | 0 | 5 | 1 | 0 | 0 | 3 | 4 | 3.13 |
| RP | Papelbon, J.Papelbon, Jonathan >> | 27 | 2007 | R | 94 | 60 | 0 | 5 | 3 | 2.86 | .230 | 0.89 | 5.6 | 2.4 | 7.7 | 85.0 | 53 | 27 | 27 | 5 | 23 | 73 | 0 | 7 | 4 | 0 | 0 | 0 | 0 | 2.86 |
| RP | Brasier, R.Brasier, Ryan >> | 30 | 2018 | R | 83 | 48 | 0 | 2 | 4 | 3.95 | .313 | 1.33 | 8.1 | 3.9 | 7.6 | 57.0 | 51 | 26 | 25 | 6 | 25 | 48 | 0 | 4 | 1 | 0 | 0 | 2 | 1 | 4.11 |
| RP | Miller, A.Miller, Andrew >> | 29 | 2014 | L | 77 | 41 | 0 | 3 | 0 | 2.83 | .285 | 1.17 | 6.1 | 4.6 | 9.6 | 47.2 | 32 | 16 | 15 | 4 | 24 | 50 | 0 | 5 | 2 | 0 | 0 | 1 | 0 | 3.57 |
| SP | O'Brien, B.O'Brien, Buck # >> | 29 | 1911 | R | 70 | 35 | 35 | 0 | 10 | 5.18 | .319 | 1.38 | 7.7 | 4.7 | 4.7 | 92.0 | 79 | 54 | 53 | 11 | 48 | 48 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 5.14 |