| 34 | Fernando Valenzuela | - | 4 | 35 | 35 | 272.1 | 2.45 | 1.15 | 6.97 | 0.46 | 3.34 | 6.87 | 0.49 | 1.09 | 24 | 1 | 986 | .214 | 1109 | -- | -- | -- | -- |
| 55 | Orel Hershiser | - | 3 | 36 | 34 | 239.2 | 2.03 | 1.03 | 6.72 | 0.30 | 2.55 | 5.90 | 0.43 | 2.06 | 25 | 6 | 870 | .206 | 953 | -- | -- | -- | -- |
| 41 | Jerry Reuss | - | 25 | 34 | 33 | 212.2 | 2.92 | 1.26 | 8.89 | 0.55 | 2.45 | 3.55 | 0.69 | 1.52 | 20 | 3 | 808 | .260 | 883 | -- | -- | -- | -- |
| 35 | Bob Welch | - | 10 | 23 | 23 | 167.1 | 2.31 | 1.05 | 7.58 | 0.86 | 1.88 | 5.16 | 0.36 | 1.00 | 15 | 6 | 626 | .225 | 675 | -- | -- | -- | -- |
| 40 | Rick Honeycutt | - | 66 | 31 | 25 | 142.0 | 3.42 | 1.34 | 8.94 | 0.57 | 3.11 | 4.25 | 0.73 | 1.86 | 11 | 1 | 541 | .261 | 600 | -- | -- | -- | -- |
| 49 | Tom Niedenfuer | - | 35 | 64 | 0 | 106.1 | 2.71 | 1.03 | 7.28 | 0.51 | 2.03 | 8.63 | 0.24 | 0.48 | 0 | 1 | 386 | .223 | 415 | -- | -- | -- | -- |
| 43 | Ken Howell | - | 61 | 56 | 0 | 86.0 | 3.77 | 1.17 | 6.91 | 0.84 | 3.66 | 8.90 | 0.41 | 1.00 | 0 | 0 | 317 | .208 | 356 | -- | -- | -- | -- |
| 27 | Carlos Diaz | - | - | 46 | 0 | 79.1 | 2.61 | 1.11 | 7.94 | 0.79 | 2.04 | 8.28 | 0.25 | 1.53 | 0 | 0 | 304 | .230 | 326 | -- | -- | -- | -- |
| 37 | Bobby Castillo | - | - | 35 | 5 | 68.0 | 5.43 | 1.47 | 7.81 | 1.19 | 5.43 | 7.54 | 0.72 | 0.95 | 1 | 1 | 256 | .230 | 301 | -- | -- | -- | -- |
| 46 | Tom Brennan | - | - | 12 | 4 | 31.2 | 7.39 | 1.64 | 11.65 | 0.57 | 3.13 | 4.83 | 0.65 | 1.27 | 0 | 0 | 123 | .333 | 144 | -- | -- | -- | -- |
| 48 | Dennis Powell | - | - | 16 | 2 | 29.1 | 5.22 | 1.47 | 9.20 | 2.15 | 3.99 | 5.83 | 0.68 | 1.69 | 0 | 1 | 114 | .263 | 133 | -- | -- | -- | -- |
| 57 | Steve Howe | - | - | 19 | 0 | 22.0 | 4.91 | 1.59 | 12.27 | 0.82 | 2.05 | 4.50 | 0.45 | 2.80 | 0 | 1 | 94 | .319 | 104 | -- | -- | -- | -- |
| 26 | Alejandro Pena | - | - | 2 | 1 | 4.1 | 8.31 | 2.31 | 14.54 | 2.08 | 6.23 | 4.15 | 1.50 | 0.57 | 0 | 0 | 20 | .350 | 23 | -- | -- | -- | -- |
| 50 | Brian Holton | - | - | 3 | 0 | 4.0 | 9.00 | 2.50 | 20.25 | -- | 2.25 | 2.25 | 1.00 | 0.83 | 0 | 0 | 20 | .450 | 21 | -- | -- | -- | -- |