| 49 | Ron Guidry | - | 4 | 31 | 31 | 250.1 | 3.42 | 1.17 | 8.34 | 0.93 | 2.16 | 5.61 | 0.38 | 0.82 | 19 | 2 | 949 | .244 | 1024 | -- | -- | -- | -- |
| 26 | Shane Rawley | - | 21 | 34 | 33 | 238.1 | 3.78 | 1.36 | 9.29 | 0.72 | 2.98 | 4.68 | 0.64 | 0.98 | 17 | 3 | 915 | .269 | 1010 | -- | -- | -- | -- |
| 19 | Dave Righetti | - | 9 | 31 | 31 | 217.0 | 3.44 | 1.20 | 8.05 | 0.50 | 2.78 | 7.01 | 0.40 | 1.02 | 20 | 2 | 817 | .237 | 900 | -- | -- | -- | -- |
| 43 | George Frazier | - | 51 | 61 | 0 | 115.1 | 3.43 | 1.21 | 7.34 | 0.39 | 3.51 | 6.09 | 0.58 | 1.34 | 0 | 3 | 415 | .227 | 480 | -- | -- | -- | -- |
| 29 | Bob Shirley | - | - | 25 | 17 | 108.0 | 5.08 | 1.46 | 10.17 | 0.83 | 3.00 | 4.42 | 0.68 | 0.93 | 6 | 0 | 416 | .293 | 465 | -- | -- | -- | -- |
| 47,57 | Ray Fontenot | - | - | 15 | 15 | 97.1 | 3.33 | 1.29 | 9.34 | 0.28 | 2.31 | 2.50 | 0.93 | 1.64 | 7 | 1 | 379 | .266 | 408 | -- | -- | -- | -- |
| 48 | Dale Murray | - | - | 40 | 0 | 94.1 | 4.48 | 1.43 | 10.78 | 0.48 | 2.10 | 4.29 | 0.49 | 1.59 | 0 | 1 | 380 | .297 | 415 | -- | -- | -- | -- |
| 54 | Rich Gossage | - | 35 | 57 | 0 | 87.1 | 2.27 | 1.23 | 8.45 | 0.52 | 2.58 | 9.27 | 0.28 | 0.48 | 0 | 1 | 330 | .248 | 368 | -- | -- | -- | -- |
| 53 | Jay Howell | - | - | 19 | 12 | 82.0 | 5.38 | 1.51 | 9.77 | 0.77 | 3.84 | 6.70 | 0.57 | 1.19 | 2 | 3 | 324 | .275 | 367 | -- | -- | -- | -- |
| 34 | Matt Keough | - | - | 12 | 12 | 55.2 | 5.17 | 1.42 | 9.54 | 1.94 | 3.23 | 4.20 | 0.77 | 0.89 | 0 | 0 | 0 | -- | 0 | -- | -- | -- | -- |
| 24 | John Montefusco | - | - | 6 | 6 | 38.0 | 3.32 | 1.29 | 9.24 | 0.71 | 2.37 | 3.55 | 0.67 | 0.52 | 0 | 0 | 0 | -- | 0 | -- | -- | -- | -- |
| 52 | Doyle Alexander | - | - | 8 | 5 | 28.1 | 6.35 | 1.34 | 9.85 | 1.91 | 2.22 | 5.40 | 0.41 | 1.09 | 0 | 0 | 0 | -- | 0 | -- | -- | -- | -- |
| 45 | Rudy May | - | - | 15 | 0 | 18.1 | 6.87 | 1.85 | 10.80 | 0.49 | 5.89 | 7.85 | 0.75 | 1.05 | 0 | 1 | 75 | .293 | 91 | -- | -- | -- | -- |
| 35 | Roger Erickson | - | - | 5 | 0 | 16.2 | 4.32 | 1.26 | 7.02 | 0.54 | 4.32 | 3.78 | 1.14 | 0.91 | 0 | 0 | 61 | .213 | 69 | -- | -- | -- | -- |
| 55 | Curt Kaufman | - | - | 4 | 0 | 8.2 | 3.12 | 1.62 | 10.38 | -- | 4.15 | 8.31 | 0.50 | 0.70 | 0 | 0 | 33 | .303 | 39 | -- | -- | -- | -- |
| 34,38 | Dave LaRoche | - | - | 1 | 0 | 1.0 | 18.00 | 2.00 | 18.00 | 9.00 | 0.00 | 0.00 | -- | 0.50 | 0 | 0 | 5 | .400 | 5 | -- | -- | -- | -- |