| SP | Smith, B.Smith, Bryn † >> | 34 | 1989 | R | 91 | 36 | 36 | 23 | 9 | 2.68 | .273 | 1.11 | 7.6 | 2.3 | 4.5 | 272.0 | 231 | 82 | 81 | 17 | 71 | 137 | 9 | 0 | 0 | 3 | 27 | 4 | 7 | 3.63 |
| SP | Gooden, D.Gooden, Dwight >> | 25 | 1989 | R | 83 | 34 | 34 | 13 | 9 | 3.86 | .328 | 1.46 | 9.2 | 4.0 | 5.3 | 223.2 | 228 | 102 | 96 | 15 | 99 | 131 | 1 | 0 | 0 | 0 | 21 | 0 | 11 | 4.03 |
| SP | Drabek, D.Drabek, Doug >> | 27 | 1989 | R | 74 | 33 | 33 | 13 | 10 | 4.76 | .343 | 1.56 | 10.6 | 3.4 | 4.5 | 217.1 | 256 | 120 | 115 | 16 | 82 | 108 | 2 | 0 | 0 | 0 | 16 | 2 | 10 | 4.12 |
| SP | Finley, C.Finley, Chuck >> | 27 | 1989 | L | 61 | 33 | 33 | 12 | 10 | 4.41 | .341 | 1.54 | 9.7 | 4.2 | 4.7 | 214.1 | 230 | 108 | 105 | 13 | 100 | 111 | 2 | 0 | 0 | 1 | 20 | 3 | 4 | 4.20 |
| RP | Eckersley, D.Eckersley, Dennis † >> | 35 | 1989 | R | 100 | 97 | 0 | 12 | 4 | 1.45 | .241 | 0.94 | 7.4 | 1.1 | 6.3 | 124.0 | 102 | 26 | 20 | 5 | 15 | 87 | 0 | 15 | 6 | 0 | 0 | 1 | 0 | 2.51 |
| RP | Lancaster, L.Lancaster, Les >> | 27 | 1989 | R | 77 | 51 | 0 | 4 | 5 | 3.33 | .307 | 1.33 | 8.6 | 3.5 | 5.6 | 67.2 | 64 | 25 | 25 | 3 | 26 | 42 | 0 | 9 | 3 | 0 | 0 | 0 | 2 | 3.49 |
| RP | Fraser, W.Fraser, Willie >> | 25 | 1989 | R | 58 | 30 | 0 | 3 | 1 | 2.80 | .269 | 1.10 | 6.9 | 3.1 | 4.9 | 35.1 | 27 | 11 | 11 | 1 | 12 | 19 | 0 | 7 | 1 | 0 | 0 | 0 | 3 | 3.31 |
| RP | Thigpen, B.Thigpen, Bobby >> | 26 | 1989 | R | 50 | 26 | 0 | 2 | 0 | 3.98 | .321 | 1.39 | 8.7 | 4.1 | 5.8 | 31.2 | 30 | 15 | 14 | 2 | 14 | 20 | 0 | 1 | 0 | 0 | 0 | 1 | 2 | 4.00 |