| SP | Stieb, D.Stieb, Dave # >> | 32 | 1989 | R | 80 | 17 | 17 | 5 | 4 | 5.29 | .329 | 1.47 | 9.3 | 4.0 | 4.0 | 95.1 | 98 | 56 | 56 | 10 | 42 | 42 | 0 | 0 | 0 | 0 | 6 | 0 | 3 | 4.81 |
| SP | Sutcliffe, R.Sutcliffe, Rick >> | 33 | 1989 | R | 71 | 17 | 17 | 7 | 8 | 4.45 | .337 | 1.53 | 10.7 | 3.0 | 4.5 | 99.0 | 118 | 51 | 49 | 12 | 33 | 50 | 1 | 0 | 0 | 0 | 7 | 0 | 5 | 4.57 |
| SP | Martinez, D.Martinez, Dennis >> | 34 | 1989 | R | 55 | 17 | 17 | 3 | 6 | 6.88 | .356 | 1.66 | 11.5 | 3.4 | 5.0 | 85.0 | 109 | 66 | 65 | 18 | 32 | 47 | 0 | 0 | 0 | 0 | 4 | 0 | 2 | 5.78 |
| RP | Pena, A.Pena, Alejandro >> | 30 | 1989 | R | 82 | 42 | 0 | 3 | 2 | 2.83 | .277 | 1.15 | 7.7 | 2.7 | 5.5 | 57.1 | 49 | 18 | 18 | 6 | 17 | 35 | 0 | 2 | 3 | 0 | 0 | 0 | 3 | 4.04 |
| RP | Aguilera, R.Aguilera, Rick >> | 28 | 1989 | R | 64 | 29 | 0 | 2 | 4 | 4.33 | .318 | 1.40 | 9.2 | 3.6 | 5.4 | 43.2 | 44 | 22 | 21 | 3 | 17 | 26 | 0 | 2 | 3 | 0 | 0 | 0 | 0 | 3.88 |
| RP | McDowell, R.McDowell, Roger >> | 29 | 1989 | R | 44 | 18 | 0 | 1 | 0 | 4.71 | .300 | 1.19 | 7.7 | 3.0 | 5.1 | 21.0 | 18 | 14 | 11 | 2 | 7 | 12 | 0 | 3 | 1 | 0 | 0 | 2 | 0 | 4.38 |
| RP | McClure, B.McClure, Bob >> | 37 | 1989 | L | 86 | 12 | 0 | 0 | 1 | 4.30 | .343 | 1.57 | 12.2 | 2.6 | 7.1 | 14.2 | 19 | 7 | 7 | 1 | 4 | 11 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 3.21 |
| RP | Thigpen, B.Thigpen, Bobby >> | 26 | 1989 | R | 50 | 12 | 0 | 0 | 2 | 4.76 | .338 | 1.53 | 9.0 | 4.8 | 2.6 | 17.0 | 17 | 9 | 9 | 1 | 9 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.76 |