| SP | Martinez, P.Martinez, Pedro >> | 30 | 2001 | R | 88 | 23 | 23 | 11 | 4 | 3.90 | .296 | 1.25 | 9.6 | 1.7 | 9.5 | 147.2 | 157 | 70 | 64 | 10 | 28 | 155 | 0 | 0 | 0 | 0 | 14 | 1 | 3 | 2.37 |
| SP | Leonard, D.Leonard, Dutch >> | 23 | 1915 | L | 62 | 22 | 22 | 8 | 6 | 4.13 | .328 | 1.45 | 8.9 | 4.1 | 4.6 | 128.2 | 127 | 62 | 59 | 12 | 59 | 66 | 0 | 0 | 0 | 0 | 9 | 2 | 1 | 4.62 |
| SP | Steele, E.Steele, Elmer † >> | 22 | 1908 | R | 86 | 21 | 21 | 13 | 2 | 2.68 | .270 | 1.08 | 7.6 | 2.2 | 4.3 | 164.2 | 138 | 58 | 49 | 4 | 40 | 79 | 6 | 0 | 0 | 2 | 14 | 5 | 0 | 3.18 |
| CL | Kimbrel, C.Kimbrel, Craig >> | 29 | 2017 | R | 99 | 35 | 0 | 1 | 3 | 4.02 | .329 | 1.44 | 8.1 | 4.9 | 8.7 | 31.1 | 28 | 14 | 14 | 3 | 17 | 30 | 0 | 27 | 3 | 0 | 0 | 1 | 4 | 4.06 |
| RP | Uehara, K.Uehara, Koji >> | 41 | 2016 | R | 52 | 47 | 0 | 3 | 5 | 4.86 | .324 | 1.40 | 8.8 | 3.8 | 8.6 | 50.0 | 49 | 29 | 27 | 10 | 21 | 48 | 0 | 1 | 2 | 0 | 0 | 2 | 1 | 5.06 |
| RP | Miller, A.Miller, Andrew >> | 29 | 2014 | L | 78 | 32 | 0 | 2 | 2 | 3.58 | .290 | 1.22 | 8.2 | 3.1 | 10.4 | 32.2 | 29 | 14 | 13 | 2 | 11 | 37 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 2.53 |
| RP | Papelbon, J.Papelbon, Jonathan >> | 27 | 2007 | R | 96 | 18 | 0 | 1 | 6 | 6.52 | .326 | 1.40 | 9.9 | 2.8 | 6.6 | 19.1 | 21 | 15 | 14 | 4 | 6 | 14 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 5.37 |
| RP | Brasier, R.Brasier, Ryan >> | 30 | 2018 | R | 85 | 21 | 0 | 2 | 1 | 3.38 | .312 | 1.36 | 8.1 | 4.3 | 7.3 | 21.1 | 19 | 8 | 8 | 2 | 10 | 17 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.05 |
| SP | Wakefield, T.Wakefield, Tim >> | 36 | 2002 | R | 61 | 11 | 0 | 1 | 1 | 4.89 | .329 | 1.47 | 9.9 | 3.6 | 7.3 | 38.2 | 42 | 22 | 21 | 5 | 15 | 31 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 4.26 |