| SP | Morgan, C.Morgan, Cy † >> | 29 | 1907 | R | 81 | 36 | 36 | 18 | 12 | 3.37 | .300 | 1.26 | 7.9 | 3.4 | 5.9 | 280.2 | 247 | 110 | 105 | 15 | 106 | 182 | 13 | 0 | 0 | 3 | 19 | 7 | 4 | 3.61 |
| SP | Sale, C.Sale, Chris † # >> | 29 | 2018 | L | 100 | 36 | 34 | 22 | 9 | 3.86 | .294 | 1.24 | 8.8 | 2.4 | 11.1 | 233.1 | 227 | 108 | 100 | 31 | 62 | 287 | 2 | 0 | 0 | 0 | 21 | 2 | 4 | 3.09 |
| SP | Steele, E.Steele, Elmer >> | 22 | 1908 | R | 86 | 36 | 36 | 16 | 13 | 4.10 | .320 | 1.40 | 10.3 | 2.4 | 5.1 | 241.1 | 275 | 124 | 110 | 25 | 63 | 136 | 16 | 0 | 0 | 5 | 19 | 3 | 0 | 4.04 |
| SP | Cicotte, E.Cicotte, Eddie >> | 25 | 1909 | R | 65 | 33 | 33 | 14 | 10 | 4.43 | .329 | 1.46 | 9.2 | 3.9 | 5.6 | 203.1 | 207 | 106 | 100 | 21 | 89 | 127 | 2 | 0 | 0 | 0 | 18 | 3 | 3 | 4.45 |
| SP | Shore, E.Shore, Ernie # >> | 23 | 1914 | R | 75 | 33 | 31 | 9 | 14 | 5.56 | .342 | 1.53 | 10.5 | 3.3 | 4.8 | 165.0 | 192 | 111 | 102 | 17 | 61 | 88 | 6 | 1 | 0 | 1 | 9 | 4 | 7 | 4.45 |
| RP | Papelbon, J.Papelbon, Jonathan >> | 27 | 2007 | R | 94 | 93 | 0 | 9 | 1 | 1.89 | .227 | 0.88 | 5.3 | 2.7 | 8.9 | 104.2 | 61 | 23 | 22 | 8 | 31 | 103 | 0 | 10 | 1 | 0 | 0 | 0 | 0 | 2.91 |
| RP | Brasier, R.Brasier, Ryan >> | 30 | 2018 | R | 84 | 61 | 0 | 4 | 5 | 3.74 | .270 | 1.11 | 6.8 | 3.3 | 7.2 | 74.2 | 56 | 31 | 31 | 7 | 27 | 59 | 0 | 4 | 1 | 0 | 0 | 0 | 0 | 3.73 |
| RP | Chapman, A.Chapman, Aroldis >> | 37 | 2025 | L | 96 | 96 | 0 | 2 | 2 | 3.18 | .241 | 0.95 | 5.2 | 3.4 | 9.1 | 85.0 | 49 | 30 | 30 | 4 | 32 | 86 | 0 | 6 | 2 | 0 | 0 | 0 | 4 | 2.72 |
| RP | Uehara, K.Uehara, Koji >> | 38 | 2013 | R | 98 | 77 | 0 | 3 | 4 | 3.02 | .278 | 1.15 | 7.5 | 2.8 | 8.8 | 80.1 | 67 | 28 | 27 | 9 | 25 | 78 | 0 | 6 | 2 | 0 | 0 | 1 | 2 | 3.49 |
| RP | Kimbrel, C.Kimbrel, Craig >> | 29 | 2017 | R | 97 | 59 | 0 | 2 | 1 | 3.21 | .275 | 1.12 | 6.7 | 3.5 | 9.9 | 73.0 | 54 | 26 | 26 | 4 | 28 | 80 | 0 | 7 | 1 | 0 | 0 | 1 | 1 | 2.71 |