| SP | Saberhagen, B.Saberhagen, Bret >> | 25 | 1989 | R | 96 | 25 | 25 | 13 | 9 | 3.66 | .287 | 1.20 | 8.4 | 2.4 | 5.1 | 177.0 | 165 | 76 | 72 | 7 | 48 | 100 | 3 | 0 | 0 | 1 | 15 | 1 | 4 | 3.21 |
| SP | Moore, M.Moore, Mike # >> | 30 | 1989 | R | 88 | 24 | 24 | 8 | 10 | 4.71 | .324 | 1.42 | 9.8 | 3.0 | 5.5 | 149.0 | 162 | 79 | 78 | 11 | 50 | 91 | 2 | 0 | 0 | 0 | 14 | 2 | 3 | 3.79 |
| SP | Langston, M.Langston, Mark >> | 29 | 1989 | L | 72 | 24 | 24 | 11 | 11 | 4.92 | .349 | 1.60 | 9.1 | 5.3 | 4.6 | 155.1 | 157 | 96 | 85 | 9 | 92 | 79 | 3 | 0 | 0 | 0 | 12 | 1 | 3 | 4.54 |
| SP | Candiotti, T.Candiotti, Tom # >> | 32 | 1989 | R | 66 | 24 | 24 | 7 | 11 | 6.31 | .366 | 1.72 | 11.8 | 3.7 | 5.1 | 137.0 | 180 | 101 | 96 | 15 | 56 | 77 | 1 | 0 | 0 | 0 | 6 | 1 | 6 | 4.55 |
| SP | Magrane, J.Magrane, Joe >> | 25 | 1989 | L | 50 | 24 | 24 | 11 | 8 | 5.01 | .354 | 1.64 | 11.4 | 3.3 | 4.5 | 149.0 | 189 | 87 | 83 | 6 | 55 | 74 | 0 | 0 | 0 | 0 | 12 | 1 | 7 | 3.66 |
| CL | McClure, B.McClure, Bob >> | 37 | 1989 | L | 86 | 43 | 0 | 1 | 2 | 2.59 | .263 | 1.07 | 7.1 | 2.6 | 4.1 | 24.1 | 19 | 8 | 7 | 2 | 7 | 11 | 0 | 6 | 1 | 0 | 0 | 0 | 0 | 4.04 |
| RP | Landrum, B.Landrum, Bill >> | 32 | 1989 | R | 76 | 61 | 0 | 3 | 0 | 4.70 | .287 | 1.19 | 8.3 | 2.6 | 5.5 | 74.2 | 68 | 42 | 39 | 9 | 21 | 45 | 0 | 1 | 2 | 0 | 0 | 1 | 3 | 4.26 |
| RP | Aguilera, R.Aguilera, Rick >> | 28 | 1989 | R | 64 | 43 | 0 | 3 | 2 | 4.18 | .302 | 1.30 | 9.4 | 2.3 | 6.0 | 71.0 | 74 | 33 | 33 | 6 | 18 | 47 | 0 | 1 | 2 | 0 | 0 | 0 | 2 | 3.54 |
| RP | Thigpen, B.Thigpen, Bobby >> | 26 | 1989 | R | 50 | 12 | 0 | 0 | 0 | 5.52 | .389 | 1.91 | 13.5 | 4.5 | 3.9 | 14.2 | 21 | 12 | 9 | 1 | 7 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.57 |
| RP | Schiraldi, C.Schiraldi, Calvin >> | 27 | 1989 | R | 49 | 14 | 0 | 1 | 0 | 6.23 | .350 | 1.62 | 8.5 | 6.4 | 8.5 | 17.1 | 16 | 14 | 12 | 4 | 12 | 16 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.29 |