| ST | Jim Hunter (Beloit) | 22 | 6 | 8 | 4.02 | 24 | 24 | 3 | 0 | 0 | 0 | 134.1 | 143 | 75 | 60 | 5 | 47 | 80 | 7 | | 9.6 | 0.3 | 3.1 | 5.4 | 1.41 |
| ST | Melido Perez | 20 | 10 | 12 | 3.70 | 28 | 23 | 13 | 1 | 5 | 0 | 170.1 | 148 | 83 | 70 | 15 | 49 | 153 | 8 | | 7.8 | 0.8 | 2.6 | 8.1 | 1.16 |
| ST | Matt Crouch | 21 | 6 | 6 | 4.14 | 20 | 17 | 8 | 2 | 1 | 0 | 117.1 | 115 | 62 | 54 | 9 | 54 | 81 | 5 | | 8.8 | 0.7 | 4.1 | 6.2 | 1.44 |
| ST | John Williams | - | 8 | 8 | 4.82 | 18 | 17 | 7 | 1 | 1 | 0 | 112.0 | 111 | 67 | 60 | 11 | 44 | 110 | 4 | | 8.9 | 0.9 | 3.5 | 8.8 | 1.38 |
| ST | Bob Sudo | - | 10 | 4 | 1.91 | 16 | 16 | 9 | 1 | 0 | 0 | 127.0 | 100 | 42 | 27 | 5 | 38 | 114 | 6 | | 7.1 | 0.4 | 2.7 | 8.1 | 1.09 |
| CL | Chris Fedor (Waterloo) | - | 7 | 4 | 3.38 | 36 | 1 | 0 | 0 | 29 | 9 | 64.0 | 46 | 26 | 24 | 12 | 31 | 72 | 7 | | 6.5 | 1.7 | 4.4 | 10.1 | 1.20 |
| RP | Jose Rodriguez | 19 | 4 | 6 | 4.14 | 32 | 4 | 1 | 0 | 15 | 2 | 95.2 | 103 | 61 | 44 | 13 | 39 | 73 | 14 | | 9.7 | 1.2 | 3.7 | 6.9 | 1.48 |
| Stu Stauffacher | - | 1 | 3 | 6.45 | 23 | 3 | 0 | 0 | 10 | 2 | 51.2 | 53 | 46 | 37 | 3 | 47 | 43 | 2 | | 9.2 | 0.5 | 8.2 | 7.5 | 1.94 |
| John Trautwein | 23 | 3 | 2 | 1.98 | 21 | 0 | 0 | 0 | 21 | 11 | 36.1 | 29 | 9 | 8 | 3 | 10 | 39 | 0 | | 7.2 | 0.7 | 2.5 | 9.7 | 1.07 |
| Scott Sundgren | - | 2 | 3 | 8.74 | 17 | 0 | 0 | 0 | 8 | 2 | 34.0 | 51 | 36 | 33 | 2 | 22 | 19 | 5 | | 13.5 | 0.5 | 5.8 | 5.0 | 2.15 |
| Thomas Arrington | - | 2 | 5 | 5.23 | 17 | 11 | 1 | 0 | 6 | 0 | 72.1 | 87 | 49 | 42 | 11 | 23 | 63 | 4 | | 10.8 | 1.4 | 2.9 | 7.8 | 1.52 |
| John Howes | - | 4 | 5 | 3.42 | 15 | 12 | 3 | 0 | 3 | 0 | 84.1 | 86 | 36 | 32 | 4 | 32 | 62 | 4 | | 9.2 | 0.4 | 3.4 | 6.6 | 1.40 |
| Michael Robertson (Sprngfield) | - | 8 | 2 | 4.56 | 12 | 1 | 0 | 0 | 3 | 0 | 27.2 | 33 | 19 | 14 | 4 | 13 | 14 | 2 | | 10.7 | 1.3 | 4.2 | 4.6 | 1.66 |
| Pat Dougherty | - | 4 | 4 | 3.29 | 15 | 6 | 2 | 1 | 4 | 1 | 52.0 | 52 | 26 | 19 | 5 | 6 | 61 | 4 | | 9.0 | 0.9 | 1.0 | 10.6 | 1.12 |
| Leonard Kelly | - | 4 | 5 | 4.07 | 12 | 12 | 2 | 1 | 0 | 0 | 55.1 | 46 | 32 | 25 | 5 | 38 | 37 | 7 | | 7.5 | 0.8 | 6.2 | 6.0 | 1.52 |
| Gene Harris | 21 | 4 | 2 | 1.35 | 7 | 6 | 4 | 3 | 0 | 0 | 53.1 | 37 | 12 | 8 | 1 | 15 | 32 | 2 | | 6.2 | 0.2 | 2.5 | 5.4 | 0.98 |
| Steven King | - | 1 | 1 | 5.29 | 3 | 3 | 1 | 0 | 0 | 0 | 17.0 | 22 | 12 | 10 | 2 | 8 | 13 | 0 | | 11.6 | 1.1 | 4.2 | 6.9 | 1.76 |
| Pitching Totals: | 84 | 80 | 3.91 | 316 | 156 | 54 | 10 | 106 | 27 | 1,304.6 | 1262 | 693 | 567 | 110 | 516 | 1066 | 81 | | 8.7 | 0.8 | 3.6 | 7.4 | 1.36 |