| ST | Roy Smith | 25 | 9 | 12 | 3.79 | 24 | 24 | 6 | 0 | 0 | 0 | 166.1 | 176 | 84 | 70 | 12 | 41 | 106 | 3 | | 9.5 | 0.6 | 2.2 | 5.7 | 1.30 |
| ST | Jeff Bittiger | 25 | 12 | 10 | 3.40 | 26 | 24 | 9 | 2 | 2 | 0 | 180.0 | 171 | 84 | 68 | 13 | 57 | 94 | 9 | | 8.6 | 0.7 | 2.9 | 4.7 | 1.27 |
| ST | Clay Christiansen (Tucson) | 29 | 8 | 9 | 3.23 | 32 | 21 | 1 | 0 | 10 | 0 | 128.0 | 129 | 64 | 46 | 9 | 64 | 57 | 6 | | 9.1 | 0.6 | 4.5 | 4.0 | 1.51 |
| ST | Kevin Hagen (Tucson) | 27 | 8 | 6 | 4.84 | 35 | 20 | 2 | 1 | 6 | 0 | 137.2 | 141 | 78 | 74 | 6 | 73 | 75 | 10 | | 9.2 | 0.4 | 4.8 | 4.9 | 1.55 |
| ST | Mark Portugal | 24 | 1 | 10 | 6.00 | 17 | 16 | 2 | 0 | 1 | 0 | 102.0 | 108 | 75 | 68 | 9 | 50 | 69 | 5 | | 9.5 | 0.8 | 4.4 | 6.1 | 1.55 |
| RP | Randy Niemann | 31 | 4 | 7 | 4.15 | 32 | 8 | 3 | 0 | 11 | 1 | 104.0 | 105 | 64 | 48 | 7 | 45 | 43 | 5 | | 9.1 | 0.6 | 3.9 | 3.7 | 1.44 |
| Steve Gomez | - | 2 | 3 | 5.91 | 23 | 0 | 0 | 0 | 17 | 4 | 32.0 | 37 | 22 | 21 | 2 | 19 | 11 | 4 | | 10.4 | 0.6 | 5.3 | 3.1 | 1.75 |
| Allan Anderson | 23 | 4 | 8 | 5.60 | 19 | 15 | 3 | 0 | 3 | 0 | 98.0 | 127 | 77 | 61 | 9 | 49 | 45 | 5 | | 11.7 | 0.8 | 4.5 | 4.1 | 1.80 |
| Darrel Higgs | - | 1 | 3 | 4.40 | 16 | 0 | 0 | 0 | 10 | 3 | 28.2 | 24 | 14 | 14 | 1 | 18 | 21 | 0 | | 7.5 | 0.3 | 5.7 | 6.6 | 1.47 |
| Danny Clay | 25 | 1 | 5 | 6.95 | 16 | 8 | 0 | 0 | 4 | 1 | 55.2 | 67 | 46 | 43 | 3 | 45 | 30 | 5 | | 10.8 | 0.5 | 7.3 | 4.9 | 2.01 |
| Ron Musselman | 32 | 3 | 10 | 6.62 | 14 | 10 | 0 | 0 | 3 | 0 | 68.0 | 82 | 55 | 50 | 6 | 34 | 50 | 2 | | 10.9 | 0.8 | 4.5 | 6.6 | 1.71 |
| RP | Tom Gorman (Las Vegas) | 29 | 1 | 4 | 3.02 | 30 | 1 | 0 | 0 | 22 | 5 | 44.2 | 37 | 19 | 15 | 3 | 25 | 22 | 7 | | 7.5 | 0.6 | 5.0 | 4.4 | 1.39 |
| Kevin Trudeau | - | 0 | 1 | 5.10 | 13 | 0 | 0 | 0 | 4 | 0 | 30.0 | 34 | 22 | 17 | 3 | 7 | 12 | 1 | | 10.2 | 0.9 | 2.1 | 3.6 | 1.37 |
| Terry Forster | 35 | 0 | 1 | 7.27 | 13 | 0 | 0 | 0 | 5 | 0 | 17.1 | 25 | 16 | 14 | 0 | 18 | 3 | 1 | | 13.0 | 0.0 | 9.3 | 1.6 | 2.48 |
| Joe Klink | 25 | 0 | 0 | 4.30 | 12 | 0 | 0 | 0 | 7 | 0 | 23.0 | 25 | 14 | 11 | 1 | 13 | 14 | 1 | | 9.8 | 0.4 | 5.1 | 5.5 | 1.65 |
| Jeff Perry | - | 1 | 3 | 6.18 | 10 | 7 | 1 | 1 | 0 | 0 | 43.2 | 49 | 31 | 30 | 5 | 30 | 16 | 3 | | 10.1 | 1.0 | 6.2 | 3.3 | 1.81 |
| Phil Huffman | 29 | 1 | 2 | 9.37 | 9 | 2 | 0 | 0 | 4 | 0 | 16.1 | 27 | 17 | 17 | 4 | 12 | 13 | 0 | | 14.9 | 2.2 | 6.6 | 7.2 | 2.39 |
| Ben Bianchi | 25 | 0 | 0 | 9.28 | 8 | 0 | 0 | 0 | 6 | 1 | 10.2 | 9 | 13 | 11 | 2 | 16 | 9 | 0 | | 7.6 | 1.7 | 13.5 | 7.6 | 2.34 |
| Mark Clemons | - | 0 | 2 | 6.31 | 7 | 3 | 0 | 0 | 2 | 0 | 25.2 | 34 | 21 | 18 | 2 | 13 | 4 | 1 | | 11.9 | 0.7 | 4.6 | 1.4 | 1.83 |
| Bill Latham | 26 | 0 | 5 | 8.69 | 6 | 6 | 0 | 0 | 0 | 0 | 29.0 | 45 | 31 | 28 | 1 | 13 | 12 | 1 | | 14.0 | 0.3 | 4.0 | 3.7 | 2.00 |
| Mike Smithson | 32 | 2 | 3 | 4.97 | 6 | 6 | 2 | 0 | 0 | 0 | 38.0 | 36 | 22 | 21 | 1 | 17 | 31 | 3 | | 8.5 | 0.2 | 4.0 | 7.3 | 1.39 |
| Steve Gasser | 19 | 1 | 4 | 8.27 | 6 | 6 | 0 | 0 | 0 | 0 | 20.2 | 21 | 25 | 19 | 1 | 37 | 18 | 12 | | 9.1 | 0.4 | 16.1 | 7.8 | 2.81 |
| Ron Gardenhire | 29 | 0 | 0 | 9.00 | 2 | 0 | 0 | 0 | 2 | 0 | 4.0 | 8 | 5 | 4 | 1 | 1 | 0 | 0 | | 18.0 | 2.3 | 2.3 | 0.0 | 2.25 |
| Pitching Totals: | 59 | 108 | 4.93 | 376 | 177 | 29 | 4 | 119 | 15 | 1,403.3 | 1517 | 899 | 768 | 101 | 697 | 755 | 84 | | 9.7 | 0.6 | 4.5 | 4.8 | 1.58 |