| SP | McDowell, J.McDowell, Jack >> | 25 | 1991 | R | 89 | 34 | 34 | 10 | 19 | 3.69 | .296 | 1.26 | 8.3 | 3.0 | 5.9 | 256.1 | 236 | 116 | 105 | 18 | 86 | 169 | 8 | 0 | 0 | 1 | 21 | 2 | 6 | 3.63 |
| SP | Smoltz, J.Smoltz, John # >> | 24 | 1991 | R | 63 | 33 | 33 | 7 | 18 | 5.66 | .335 | 1.49 | 9.7 | 3.8 | 6.2 | 187.2 | 202 | 121 | 118 | 16 | 78 | 129 | 0 | 0 | 0 | 0 | 12 | 4 | 11 | 4.05 |
| SP | Johnson, R.Johnson, Randy >> | 28 | 1991 | L | 40 | 32 | 32 | 12 | 14 | 4.01 | .313 | 1.34 | 7.0 | 5.2 | 9.0 | 190.2 | 147 | 98 | 85 | 20 | 109 | 189 | 0 | 0 | 0 | 0 | 20 | 4 | 5 | 4.16 |
| SP | Hesketh, J.Hesketh, Joe >> | 32 | 1991 | L | 38 | 32 | 32 | 1 | 9 | 4.07 | .303 | 1.28 | 8.7 | 2.9 | 6.1 | 112.2 | 108 | 54 | 51 | 13 | 36 | 76 | 0 | 0 | 0 | 0 | 0 | 3 | 3 | 4.20 |
| SP | Hershiser, O.Hershiser, Orel >> | 33 | 1991 | R | 25 | 31 | 31 | 5 | 18 | 6.29 | .353 | 1.63 | 11.3 | 3.4 | 5.0 | 150.1 | 189 | 109 | 105 | 15 | 56 | 84 | 0 | 0 | 0 | 0 | 7 | 1 | 4 | 4.32 |
| SP | Tewksbury, B.Tewksbury, Bob >> | 31 | 1991 | R | 20 | 5 | 0 | 0 | 0 | 1.80 | .348 | 1.60 | 10.8 | 3.6 | 5.4 | 5.0 | 6 | 1 | 1 | 0 | 2 | 3 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 3.00 |
| SP | Hanson, E.Hanson, Erik # >> | 26 | 1991 | R | 15 | 34 | 0 | 5 | 7 | 6.35 | .362 | 1.68 | 11.3 | 3.9 | 7.3 | 79.1 | 99 | 56 | 56 | 5 | 34 | 64 | 0 | 1 | 5 | 0 | 0 | 2 | 7 | 3.57 |