| SP | Steele, E.Steele, Elmer >> | 22 | 1908 | R | 81 | 30 | 30 | 13 | 9 | 4.07 | .286 | 1.16 | 8.8 | 1.7 | 4.5 | 212.1 | 207 | 106 | 96 | 22 | 39 | 107 | 14 | 0 | 0 | 0 | 18 | 9 | 0 | 4.02 |
| SP | Morgan, C.Morgan, Cy † # >> | 29 | 1907 | R | 75 | 31 | 31 | 12 | 8 | 4.02 | .306 | 1.30 | 9.0 | 2.8 | 5.7 | 217.1 | 216 | 105 | 97 | 15 | 67 | 137 | 10 | 0 | 0 | 2 | 16 | 5 | 1 | 3.63 |
| SP | Cicotte, E.Cicotte, Eddie # >> | 25 | 1909 | R | 61 | 32 | 30 | 4 | 10 | 6.29 | .364 | 1.69 | 10.3 | 5.1 | 4.8 | 151.2 | 172 | 116 | 106 | 17 | 85 | 81 | 1 | 0 | 0 | 0 | 11 | 3 | 4 | 5.14 |
| RP | Kimbrel, C.Kimbrel, Craig >> | 29 | 2017 | R | 98 | 79 | 0 | 7 | 7 | 3.19 | .285 | 1.18 | 6.8 | 3.9 | 12.6 | 90.1 | 68 | 35 | 32 | 11 | 39 | 126 | 0 | 8 | 4 | 0 | 0 | 1 | 2 | 3.12 |
| RP | Chapman, A.Chapman, Aroldis >> | 37 | 2025 | L | 96 | 83 | 0 | 2 | 3 | 3.55 | .280 | 1.13 | 7.3 | 3.0 | 9.5 | 78.2 | 63 | 34 | 31 | 9 | 26 | 82 | 0 | 3 | 5 | 0 | 0 | 3 | 5 | 3.51 |
| RP | Papelbon, J.Papelbon, Jonathan >> | 27 | 2007 | R | 92 | 58 | 0 | 3 | 7 | 4.02 | .309 | 1.31 | 8.0 | 3.9 | 10.2 | 69.1 | 61 | 33 | 31 | 10 | 30 | 78 | 0 | 2 | 3 | 0 | 0 | 2 | 0 | 4.01 |
| RP | Uehara, K.Uehara, Koji >> | 38 | 2013 | R | 100 | 75 | 0 | 9 | 1 | 3.71 | .307 | 1.32 | 9.1 | 2.8 | 8.4 | 85.0 | 86 | 36 | 35 | 6 | 26 | 79 | 0 | 8 | 6 | 0 | 0 | 1 | 2 | 3.01 |
| RP | Brasier, R.Brasier, Ryan >> | 30 | 2018 | R | 79 | 59 | 0 | 7 | 7 | 3.64 | .298 | 1.24 | 7.2 | 4.0 | 5.8 | 81.2 | 65 | 33 | 33 | 9 | 36 | 52 | 0 | 5 | 1 | 0 | 0 | 3 | 3 | 4.60 |