| SP | Clemens, R.Clemens, Roger † >> | 28 | 1990 | R | 96 | 28 | 28 | 12 | 8 | 2.89 | .289 | 1.21 | 8.8 | 2.2 | 6.4 | 217.2 | 211 | 74 | 70 | 8 | 53 | 154 | 6 | 0 | 0 | 2 | 20 | 1 | 6 | 2.81 |
| SP | Perez, M.Perez, Melido >> | 24 | 1990 | R | 52 | 26 | 26 | 4 | 11 | 4.21 | .336 | 1.51 | 8.9 | 4.7 | 5.7 | 143.1 | 141 | 79 | 67 | 15 | 75 | 91 | 0 | 0 | 0 | 0 | 8 | 2 | 4 | 4.71 |
| SP | Smith, P.Smith, Pete # >> | 24 | 1990 | R | 41 | 26 | 26 | 10 | 8 | 4.10 | .313 | 1.36 | 10.2 | 2.1 | 4.9 | 153.2 | 173 | 72 | 70 | 15 | 36 | 84 | 0 | 0 | 0 | 0 | 16 | 1 | 1 | 3.90 |
| RP | Hartley, M.Hartley, Mike >> | 29 | 1990 | R | 94 | 62 | 0 | 12 | 8 | 4.15 | .312 | 1.35 | 7.9 | 4.3 | 6.4 | 130.0 | 114 | 64 | 60 | 6 | 62 | 93 | 0 | 8 | 3 | 0 | 0 | 1 | 3 | 3.62 |
| RP | Whitehurst, W.Whitehurst, Wally >> | 26 | 1990 | R | 70 | 62 | 0 | 3 | 7 | 4.76 | .312 | 1.36 | 9.8 | 2.4 | 5.7 | 96.1 | 105 | 52 | 51 | 12 | 26 | 61 | 0 | 11 | 5 | 0 | 0 | 0 | 2 | 4.17 |
| RP | Henneman, M.Henneman, Mike >> | 29 | 1990 | R | 34 | 28 | 0 | 2 | 2 | 3.86 | .352 | 1.63 | 9.3 | 5.4 | 6.4 | 35.0 | 36 | 15 | 15 | 2 | 21 | 25 | 0 | 2 | 0 | 0 | 0 | 0 | 2 | 4.11 |
| SP | Saberhagen, B.Saberhagen, Bret >> | 26 | 1990 | R | 37 | 2 | 0 | 0 | 0 | 5.40 | .500 | 3.00 | 27.0 | 18.0 | 18.0 | 1.2 | 3 | 1 | 1 | 0 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5.00 |
| SP | Maddux, G.Maddux, Greg >> | 24 | 1990 | R | 29 | 15 | 0 | 0 | 2 | 7.71 | .402 | 2.01 | 12.5 | 5.9 | 5.9 | 23.1 | 32 | 20 | 20 | 4 | 15 | 15 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 5.91 |