| SP | Martinez, P.Martinez, Pedro # >> | 29 | 2000 | R | 100 | 20 | 20 | 6 | 7 | 3.60 | .289 | 1.21 | 8.4 | 2.5 | 8.2 | 137.2 | 128 | 56 | 55 | 9 | 38 | 125 | 2 | 0 | 0 | 1 | 12 | 2 | 0 | 2.91 |
| SP | Hunter, C.Hunter, Catfish >> | 26 | 1972 | R | 81 | 19 | 19 | 6 | 6 | 6.91 | .378 | 1.81 | 12.3 | 4.0 | 5.4 | 96.1 | 131 | 74 | 74 | 21 | 43 | 58 | 0 | 0 | 0 | 0 | 6 | 2 | 0 | 6.04 |
| SP | Marichal, J.Marichal, Juan >> | 29 | 1966 | R | 76 | 20 | 18 | 6 | 6 | 6.22 | .333 | 1.50 | 11.1 | 2.4 | 5.1 | 94.0 | 116 | 68 | 65 | 19 | 25 | 53 | 2 | 1 | 0 | 1 | 6 | 0 | 0 | 5.30 |
| CL | Doolittle, S.Doolittle, Sean >> | 31 | 2018 | L | 99 | 55 | 0 | 3 | 5 | 4.48 | .312 | 1.36 | 8.3 | 4.1 | 9.6 | 60.1 | 55 | 34 | 30 | 6 | 27 | 64 | 0 | 15 | 6 | 0 | 0 | 0 | 3 | 3.52 |
| SU | Papelbon, J.Papelbon, Jonathan >> | 27 | 2007 | R | 92 | 55 | 0 | 4 | 3 | 4.62 | .335 | 1.46 | 8.9 | 4.4 | 10.0 | 62.1 | 61 | 32 | 32 | 9 | 30 | 69 | 0 | 1 | 5 | 0 | 0 | 3 | 0 | 4.26 |
| RP | Boxberger, B.Boxberger, Brad >> | 26 | 2014 | R | 83 | 51 | 0 | 6 | 0 | 3.70 | .320 | 1.39 | 7.6 | 5.0 | 11.6 | 56.0 | 47 | 25 | 23 | 7 | 31 | 72 | 0 | 3 | 2 | 0 | 0 | 1 | 2 | 3.77 |
| RP | Britton, Z.Britton, Zach >> | 28 | 2016 | L | 78 | 54 | 0 | 7 | 1 | 4.72 | .346 | 1.56 | 9.7 | 4.3 | 7.2 | 61.0 | 66 | 33 | 32 | 7 | 29 | 49 | 0 | 0 | 3 | 0 | 0 | 2 | 6 | 4.41 |