| ST | Frank DiPino | 25 | 13 | 9 | 4.03 | 26 | 26 | 11 | 3 | 0 | 0 | 189.2 | 187 | 102 | 85 | 17 | 86 | 115 | 7 | | 8.9 | 0.8 | 4.1 | 5.5 | 1.44 |
| ST | Chuck Porter | 26 | 8 | 12 | 3.98 | 25 | 25 | 12 | 1 | 0 | 0 | 183.1 | 196 | 98 | 81 | 15 | 59 | 102 | 2 | | 9.6 | 0.7 | 2.9 | 5.0 | 1.39 |
| ST | Tim Cook | - | 7 | 9 | 4.18 | 26 | 20 | 3 | 1 | 4 | 0 | 129.1 | 138 | 72 | 60 | 16 | 48 | 68 | 6 | | 9.6 | 1.1 | 3.3 | 4.7 | 1.44 |
| ST | Alfredo Martinez (Spokane) | 25 | 8 | 7 | 5.37 | 21 | 21 | 5 | 1 | 0 | 0 | 120.2 | 136 | 77 | 72 | 11 | 64 | 62 | 2 | | 10.1 | 0.8 | 4.8 | 4.6 | 1.66 |
| ST | Mike Madden | 24 | 3 | 8 | 7.03 | 18 | 18 | 1 | 0 | 0 | 0 | 80.2 | 92 | 69 | 63 | 3 | 60 | 41 | 8 | | 10.3 | 0.3 | 6.7 | 4.6 | 1.88 |
| ST | Rich Olsen | - | 5 | 5 | 3.56 | 21 | 16 | 3 | 1 | 0 | 0 | 101.0 | 101 | 49 | 40 | 6 | 54 | 52 | 1 | | 9.0 | 0.5 | 4.8 | 4.6 | 1.53 |
| CL | Pete Ladd | 25 | 10 | 2 | 2.91 | 34 | 0 | 0 | 0 | 30 | 8 | 55.2 | 42 | 19 | 18 | 5 | 18 | 63 | 4 | | 6.8 | 0.8 | 2.9 | 10.2 | 1.08 |
| RP | Chick Valley | - | 4 | 3 | 5.15 | 38 | 1 | 0 | 0 | 24 | 3 | 50.2 | 58 | 31 | 29 | 5 | 15 | 27 | 3 | | 10.3 | 0.9 | 2.7 | 4.8 | 1.44 |
| RP | Rick Kranitz | 23 | 4 | 5 | 5.14 | 35 | 5 | 1 | 1 | 17 | 2 | 108.2 | 95 | 64 | 62 | 10 | 89 | 85 | 7 | | 7.9 | 0.8 | 7.4 | 7.0 | 1.69 |
| RP | Michael Anderson | - | 5 | 5 | 3.29 | 30 | 6 | 1 | 0 | 11 | 0 | 101.1 | 92 | 47 | 37 | 3 | 64 | 61 | 10 | | 8.2 | 0.3 | 5.7 | 5.4 | 1.54 |
| Dewey Robinson (Portland) | 27 | 1 | 2 | 5.06 | 21 | 1 | 0 | 0 | 9 | 2 | 48.0 | 52 | 32 | 27 | 7 | 29 | 41 | 1 | | 9.8 | 1.3 | 5.4 | 7.7 | 1.69 |
| Doug Jones | 25 | 5 | 8 | 2.97 | 23 | 9 | 4 | 2 | 10 | 2 | 106.0 | 109 | 48 | 35 | 9 | 31 | 60 | 2 | | 9.3 | 0.8 | 2.6 | 5.1 | 1.32 |
| Jaime Cocanower | 25 | 4 | 3 | 4.86 | 14 | 12 | 1 | 0 | 0 | 0 | 74.0 | 81 | 49 | 40 | 3 | 59 | 32 | 8 | | 9.9 | 0.4 | 7.2 | 3.9 | 1.89 |
| Bob Gibson | 25 | 1 | 1 | 1.13 | 6 | 0 | 0 | 0 | 4 | 2 | 8.0 | 3 | 2 | 1 | 0 | 10 | 6 | 0 | | 3.4 | 0.0 | 11.3 | 6.8 | 1.63 |
| Jack Uhey | - | 0 | 0 | 6.43 | 3 | 0 | 0 | 0 | 1 | 1 | 7.0 | 6 | 5 | 5 | 2 | 6 | 1 | 0 | | 7.7 | 2.6 | 7.7 | 1.3 | 1.71 |
| Pitching Totals: | 78 | 79 | 4.32 | 341 | 160 | 42 | 10 | 110 | 20 | 1,364.0 | 1388 | 764 | 655 | 112 | 692 | 816 | 61 | | 9.2 | 0.7 | 4.6 | 5.4 | 1.52 |