| SP | Corbin, P.Corbin, Patrick >> | 28 | 2018 | L | 94 | 30 | 30 | 4 | 15 | 4.11 | .278 | 1.12 | 7.7 | 2.4 | 10.5 | 188.1 | 160 | 92 | 86 | 22 | 50 | 220 | 1 | 0 | 0 | 0 | 17 | 8 | 4 | 3.11 |
| SP | Buchholz, C.Buchholz, Clay † # >> | 34 | 2018 | R | 89 | 30 | 30 | 10 | 8 | 3.41 | .279 | 1.13 | 7.7 | 2.5 | 7.8 | 200.2 | 171 | 80 | 76 | 23 | 56 | 174 | 2 | 0 | 0 | 0 | 20 | 6 | 3 | 3.69 |
| SP | Anderson, C.Anderson, Chase >> | 30 | 2018 | R | 70 | 29 | 29 | 7 | 10 | 4.64 | .342 | 1.49 | 8.8 | 4.6 | 8.1 | 155.1 | 152 | 91 | 80 | 21 | 80 | 140 | 0 | 0 | 0 | 0 | 10 | 10 | 3 | 4.70 |
| SP | Marquez, G.Marquez, German >> | 23 | 2018 | R | 65 | 29 | 29 | 7 | 16 | 6.04 | .350 | 1.57 | 10.2 | 4.0 | 9.1 | 161.0 | 182 | 109 | 108 | 25 | 71 | 163 | 0 | 0 | 0 | 0 | 9 | 7 | 10 | 4.45 |
| SP | Rodriguez, E.Rodriguez, Eduardo >> | 25 | 2018 | L | 58 | 28 | 28 | 6 | 15 | 5.95 | .346 | 1.57 | 10.1 | 4.0 | 8.7 | 127.0 | 142 | 87 | 84 | 20 | 57 | 123 | 0 | 0 | 0 | 0 | 5 | 3 | 2 | 4.53 |
| RP | Ottavino, A.Ottavino, Adam >> | 32 | 2018 | R | 94 | 76 | 0 | 1 | 2 | 2.58 | .286 | 1.15 | 5.3 | 5.1 | 11.2 | 108.0 | 63 | 37 | 31 | 9 | 61 | 134 | 0 | 3 | 3 | 0 | 0 | 6 | 5 | 3.46 |
| RP | Trivino, L.Trivino, Lou # >> | 26 | 2018 | R | 72 | 76 | 0 | 4 | 5 | 5.11 | .313 | 1.31 | 8.2 | 3.7 | 9.8 | 98.2 | 89 | 60 | 56 | 18 | 40 | 107 | 0 | 9 | 4 | 0 | 0 | 6 | 1 | 4.61 |
| RP | Brebbia, J.Brebbia, John >> | 28 | 2018 | R | 59 | 73 | 0 | 5 | 4 | 4.10 | .332 | 1.48 | 9.1 | 4.2 | 10.3 | 90.0 | 91 | 42 | 41 | 5 | 42 | 103 | 0 | 5 | 3 | 0 | 0 | 1 | 3 | 2.87 |
| RP | Venters, J.Venters, Jonny >> | 33 | 2018 | L | 50 | 69 | 0 | 7 | 6 | 3.84 | .303 | 1.29 | 8.0 | 3.6 | 9.5 | 75.0 | 67 | 34 | 32 | 5 | 30 | 79 | 0 | 8 | 3 | 0 | 0 | 1 | 7 | 3.00 |
| RP | Axford, J.Axford, John >> | 35 | 2018 | R | 42 | 51 | 0 | 5 | 2 | 3.50 | .305 | 1.25 | 8.4 | 3.0 | 8.0 | 61.2 | 57 | 26 | 24 | 6 | 20 | 54 | 0 | 2 | 2 | 0 | 0 | 4 | 9 | 3.69 |
| SP | Barria, J.Barria, Jaime >> | 21 | 2018 | R | 49 | 3 | 0 | 0 | 0 | 9.00 | .400 | 2.00 | 12.0 | 6.0 | 6.0 | 3.0 | 4 | 3 | 3 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12.33 |