| SP | Arrieta, J.Arrieta, Jake † # >> | 29 | 2015 | R | 93 | 31 | 31 | 24 | 3 | 2.56 | .243 | 0.94 | 6.8 | 1.7 | 7.1 | 207.2 | 156 | 61 | 59 | 16 | 40 | 164 | 2 | 0 | 0 | 1 | 25 | 4 | 1 | 3.06 |
| SP | Leonard, D.Leonard, Dutch >> | 22 | 1914 | L | 91 | 30 | 30 | 14 | 8 | 2.69 | .250 | 0.99 | 6.1 | 2.8 | 5.3 | 204.0 | 139 | 66 | 61 | 14 | 63 | 119 | 1 | 0 | 0 | 0 | 24 | 2 | 6 | 3.68 |
| SP | Brown, M.Brown, Mordecai >> | 32 | 1908 | R | 85 | 30 | 30 | 16 | 3 | 3.42 | .265 | 1.08 | 8.0 | 1.7 | 4.0 | 192.1 | 170 | 80 | 73 | 15 | 37 | 85 | 3 | 0 | 0 | 1 | 19 | 1 | 4 | 3.72 |
| SP | Fernandez, J.Fernandez, Jose >> | 21 | 2013 | R | 76 | 29 | 29 | 17 | 6 | 4.29 | .315 | 1.35 | 8.1 | 4.1 | 8.1 | 182.1 | 164 | 91 | 87 | 12 | 83 | 163 | 0 | 0 | 0 | 0 | 16 | 4 | 4 | 3.50 |
| SP | McDowell, S.McDowell, Sam # >> | 26 | 1968 | L | 45 | 27 | 27 | 11 | 9 | 4.46 | .320 | 1.41 | 9.0 | 3.7 | 7.6 | 185.2 | 185 | 99 | 92 | 22 | 77 | 157 | 3 | 0 | 0 | 0 | 12 | 0 | 3 | 4.10 |
| RP | Chapman, A.Chapman, Aroldis † $ >> | 26 | 2014 | L | 93 | 79 | 0 | 4 | 2 | 1.86 | .240 | 0.94 | 4.1 | 4.3 | 9.9 | 111.0 | 51 | 23 | 23 | 5 | 53 | 122 | 0 | 7 | 1 | 0 | 0 | 1 | 2 | 2.85 |
| RP | Treinen, B.Treinen, Blake >> | 30 | 2018 | R | 79 | 37 | 0 | 1 | 3 | 3.19 | .302 | 1.25 | 7.5 | 3.9 | 5.8 | 42.1 | 35 | 15 | 15 | 6 | 18 | 27 | 0 | 8 | 2 | 0 | 0 | 2 | 1 | 5.00 |
| RP | Harvey, B.Harvey, Bryan >> | 28 | 1991 | R | 66 | 5 | 0 | 2 | 0 | 1.42 | .240 | 0.79 | 6.0 | 1.5 | 6.0 | 6.1 | 4 | 1 | 1 | 0 | 1 | 4 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 2.67 |
| RP | Sutter, B.Sutter, Bruce >> | 24 | 1977 | R | 67 | 32 | 0 | 5 | 0 | 6.29 | .353 | 1.64 | 10.3 | 4.5 | 7.2 | 54.1 | 62 | 38 | 38 | 15 | 27 | 43 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 6.52 |