| SP | Martinez, P.Martinez, Pedro # $$ >> | 29 | 2000 | R | 100 | 17 | 17 | 8 | 8 | 3.62 | .274 | 1.13 | 7.8 | 2.3 | 9.2 | 124.1 | 108 | 57 | 50 | 12 | 32 | 127 | 1 | 0 | 0 | 0 | 12 | 1 | 4 | 3.01 |
| SP | Johnson, W.Johnson, Walter >> | 26 | 1913 | R | 95 | 17 | 16 | 7 | 6 | 4.12 | .296 | 1.23 | 8.9 | 2.2 | 4.7 | 107.0 | 106 | 52 | 49 | 10 | 26 | 56 | 2 | 0 | 0 | 0 | 8 | 3 | 2 | 3.98 |
| SP | Snell, B.Snell, Blake $ >> | 25 | 2018 | L | 80 | 16 | 16 | 6 | 3 | 2.80 | .265 | 1.06 | 6.1 | 3.5 | 8.1 | 96.1 | 65 | 33 | 30 | 5 | 37 | 86 | 1 | 0 | 0 | 0 | 11 | 2 | 1 | 3.10 |
| SP | Brown, M.Brown, Mordecai >> | 32 | 1908 | R | 85 | 16 | 16 | 6 | 7 | 4.49 | .297 | 1.25 | 8.2 | 3.1 | 3.5 | 106.1 | 97 | 60 | 53 | 4 | 36 | 41 | 0 | 0 | 0 | 0 | 7 | 2 | 2 | 3.79 |
| SP | Leonard, D.Leonard, Dutch >> | 22 | 1914 | L | 91 | 16 | 16 | 8 | 3 | 4.48 | .333 | 1.46 | 9.0 | 4.2 | 5.2 | 90.1 | 90 | 47 | 45 | 10 | 42 | 52 | 0 | 0 | 0 | 0 | 7 | 3 | 1 | 4.79 |
| RP | Treinen, B.Treinen, Blake >> | 30 | 2018 | R | 79 | 29 | 0 | 2 | 2 | 4.70 | .328 | 1.47 | 9.3 | 4.2 | 6.6 | 30.2 | 31 | 19 | 16 | 4 | 14 | 22 | 0 | 1 | 2 | 0 | 0 | 0 | 0 | 4.67 |
| RP | Devine, J.Devine, Joey >> | 25 | 2008 | R | 80 | 36 | 0 | 4 | 1 | 4.67 | .354 | 1.64 | 10.3 | 4.8 | 8.5 | 34.2 | 39 | 19 | 18 | 4 | 18 | 32 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 4.24 |
| RP | Messersmith, A.Messersmith, Andy >> | 23 | 1968 | R | 57 | 0 | 0 | 0 | 0 | - | .000 | - | - | - | - | 0.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - |
| RP | Marmol, C.Marmol, Carlos >> | 26 | 2008 | R | 71 | 18 | 0 | 0 | 2 | 6.48 | .375 | 1.74 | 9.0 | 7.3 | 9.0 | 16.2 | 16 | 12 | 12 | 0 | 13 | 16 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 3.63 |
| SP | Fernandez, S.Fernandez, Sid >> | 23 | 1985 | L | 49 | 0 | 0 | 0 | 0 | - | .000 | - | - | - | - | 0.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - |
| CL | Rivera, M.Rivera, Mariano † >> | 39 | 2008 | R | 85 | 34 | 0 | 3 | 2 | 1.60 | .263 | 1.07 | 6.8 | 3.0 | 8.2 | 33.2 | 25 | 7 | 6 | 3 | 11 | 30 | 0 | 18 | 1 | 0 | 0 | 0 | 0 | 3.36 |