| ST | Andy Beene | 26 | 13 | 6 | 5.03 | 26 | 26 | 3 | 1 | 0 | 0 | 154.0 | 138 | 94 | 86 | 17 | 104 | 95 | 9 | | 8.1 | 1.0 | 6.1 | 5.6 | 1.57 |
| ST | Alfredo Martinez | 26 | 5 | 11 | 6.51 | 28 | 26 | 2 | 0 | 0 | 0 | 149.1 | 174 | 125 | 108 | 15 | 91 | 84 | 10 | | 10.5 | 0.9 | 5.5 | 5.1 | 1.77 |
| ST | Jaime Cocanower | 26 | 10 | 10 | 4.81 | 23 | 23 | 5 | 0 | 0 | 0 | 153.1 | 177 | 100 | 82 | 16 | 59 | 79 | 9 | | 10.4 | 0.9 | 3.5 | 4.6 | 1.54 |
| ST | Scott Roberts | -3 | 6 | 10 | 6.36 | 21 | 21 | 2 | 2 | 0 | 0 | 109.0 | 135 | 90 | 77 | 15 | 63 | 69 | 2 | | 11.1 | 1.2 | 5.2 | 5.7 | 1.82 |
| ST | Tom Candiotti | 25 | 6 | 4 | 2.81 | 15 | 14 | 5 | 2 | 1 | 0 | 99.1 | 87 | 35 | 31 | 6 | 16 | 61 | 1 | | 7.9 | 0.5 | 1.4 | 5.5 | 1.04 |
| CL | Willie Mueller | 26 | 2 | 4 | 6.87 | 40 | 0 | 0 | 0 | 26 | 5 | 74.2 | 102 | 67 | 57 | 11 | 40 | 26 | 1 | | 12.3 | 1.3 | 4.8 | 3.1 | 1.90 |
| RP | Michael Anderson | - | 10 | 11 | 4.16 | 43 | 12 | 3 | 2 | 16 | 1 | 155.2 | 162 | 88 | 72 | 9 | 90 | 101 | 5 | | 9.4 | 0.5 | 5.2 | 5.8 | 1.62 |
| CL | Danny Boone (Tucson) | 29 | 7 | 6 | 5.02 | 43 | 0 | 0 | 0 | 34 | 11 | 75.1 | 96 | 49 | 42 | 6 | 10 | 58 | 3 | | 11.5 | 0.7 | 1.2 | 6.9 | 1.41 |
| RP | Dan Burns | - | 2 | 6 | 7.63 | 26 | 1 | 0 | 0 | 21 | 6 | 46.0 | 59 | 40 | 39 | 9 | 19 | 18 | 3 | | 11.5 | 1.8 | 3.7 | 3.5 | 1.70 |
| George Stablein | 25 | 1 | 4 | 4.95 | 22 | 3 | 0 | 0 | 9 | 1 | 56.1 | 75 | 37 | 31 | 4 | 24 | 18 | 2 | | 12.0 | 0.6 | 3.8 | 2.9 | 1.76 |
| Bill Castro | 29 | 1 | 2 | 3.70 | 18 | 1 | 0 | 0 | 11 | 3 | 41.1 | 42 | 17 | 17 | 7 | 6 | 20 | 1 | | 9.1 | 1.5 | 1.3 | 4.4 | 1.16 |
| Pete Ladd | 26 | 0 | 0 | 1.35 | 12 | 0 | 0 | 0 | 12 | 5 | 13.1 | 10 | 2 | 2 | 1 | 4 | 16 | 0 | | 6.8 | 0.7 | 2.7 | 10.8 | 1.05 |
| Ernie Camacho | 28 | 0 | 2 | 6.85 | 11 | 3 | 0 | 0 | 5 | 0 | 23.2 | 31 | 21 | 18 | 1 | 12 | 16 | 3 | | 11.8 | 0.4 | 4.6 | 6.1 | 1.82 |
| Chuck Porter | 27 | 0 | 1 | 4.74 | 7 | 1 | 0 | 0 | 4 | 1 | 19.0 | 30 | 15 | 10 | 2 | 12 | 10 | 0 | | 14.2 | 0.9 | 5.7 | 4.7 | 2.21 |
| Rick Kranitz | 24 | 1 | 3 | 5.29 | 7 | 4 | 0 | 0 | 1 | 0 | 32.1 | 35 | 22 | 19 | 5 | 29 | 24 | 2 | | 9.7 | 1.4 | 8.1 | 6.7 | 1.98 |
| Phillip Hinrichs (Phoenix) | - | 0 | 1 | 7.79 | 7 | 0 | 0 | 0 | 6 | 1 | 17.1 | 26 | 17 | 15 | 1 | 5 | 10 | 0 | | 13.5 | 0.5 | 2.6 | 5.2 | 1.79 |
| Kim Seaman | 26 | 0 | 0 | 1.23 | 6 | 0 | 0 | 0 | 2 | 0 | 7.1 | 4 | 1 | 1 | 0 | 3 | 5 | 1 | | 4.9 | 0.0 | 3.7 | 6.1 | 0.95 |
| Rich Olsen | - | 0 | 4 | 8.57 | 5 | 4 | 0 | 0 | 0 | 0 | 21.0 | 24 | 23 | 20 | 3 | 13 | 12 | 4 | | 10.3 | 1.3 | 5.6 | 5.1 | 1.76 |
| Doug Jones | 26 | 0 | 1 | 10.29 | 3 | 1 | 0 | 0 | 2 | 0 | 7.0 | 10 | 8 | 8 | 2 | 5 | 4 | 0 | | 12.9 | 2.6 | 6.4 | 5.1 | 2.14 |
| Dan Plante | - | 0 | 0 | 10.15 | 1 | 0 | 0 | 0 | 0 | 0 | 2.2 | 5 | 3 | 3 | 0 | 0 | 2 | 1 | | 16.9 | 0.0 | 0.0 | 6.8 | 1.88 |
| Pitching Totals: | 64 | 86 | 5.28 | 364 | 140 | 20 | 7 | 150 | 34 | 1,257.9 | 1422 | 854 | 738 | 130 | 605 | 728 | 57 | | 10.2 | 0.9 | 4.3 | 5.2 | 1.61 |