| SP | Martinez, P.Martinez, Pedro | 29 | Warriors | R | 100 | 28 | 28 | 11 | 9 | 4.15 | .293 | 1.22 | 8.2 | 2.8 | 8.8 | 203.2 | 185 | 99 | 94 | 27 | 63 | 198 | 6 | 0 | 0 | 0 | 17 | 5 | 3 | 3.78 |
| SP | Alexander, P.Alexander, Pete | 28 | Homers | R | 88 | 28 | 28 | 13 | 10 | 3.61 | .270 | 1.08 | 7.5 | 2.2 | 4.8 | 209.2 | 175 | 85 | 84 | 20 | 52 | 112 | 5 | 0 | 0 | 3 | 16 | 6 | 5 | 4.00 |
| SP | Arrieta, J.Arrieta, Jake # | 29 | Bombers | R | 93 | 27 | 27 | 13 | 4 | 3.71 | .280 | 1.14 | 8.3 | 1.9 | 7.8 | 157.2 | 145 | 65 | 65 | 21 | 34 | 136 | 2 | 0 | 0 | 2 | 16 | 5 | 2 | 3.75 |
| RP | Kimbrel, C.Kimbrel, Craig | 24 | Bombers | R | 100 | 69 | 0 | 6 | 3 | 2.29 | .224 | 0.86 | 5.1 | 2.6 | 9.3 | 106.0 | 60 | 27 | 27 | 7 | 31 | 109 | 0 | 12 | 4 | 0 | 0 | 1 | 11 | 2.71 |
| RP | Gregerson, L.Gregerson, Luke | 26 | Frogs | R | 73 | 66 | 0 | 6 | 3 | 2.59 | .257 | 0.99 | 6.6 | 2.3 | 8.6 | 80.0 | 59 | 25 | 23 | 5 | 20 | 76 | 0 | 11 | 2 | 0 | 0 | 4 | 0 | 2.81 |
| CL | Betances, D.Betances, Dellin | 26 | Monarchs | R | 94 | 73 | 0 | 5 | 4 | 3.84 | .313 | 1.37 | 7.7 | 4.7 | 9.5 | 79.2 | 68 | 34 | 34 | 8 | 41 | 83 | 0 | 41 | 7 | 0 | 0 | 0 | 2 | 3.77 |
| CL | Chapman, A.Chapman, Aroldis | 26 | Homers | L | 93 | 46 | 0 | 1 | 2 | 3.83 | .317 | 1.32 | 7.3 | 4.7 | 9.6 | 42.1 | 34 | 21 | 18 | 6 | 22 | 45 | 0 | 36 | 5 | 0 | 0 | 3 | 1 | 4.50 |