| SP | Smoltz, J.Smoltz, John >> | 22 | 1989 | R | 94 | 36 | 36 | 14 | 11 | 3.38 | .293 | 1.23 | 7.4 | 3.7 | 5.5 | 255.1 | 210 | 101 | 96 | 22 | 105 | 157 | 6 | 0 | 0 | 1 | 23 | 3 | 6 | 4.16 |
| SP | Hurst, B.Hurst, Bruce # >> | 31 | 1989 | L | 81 | 35 | 35 | 18 | 8 | 4.17 | .300 | 1.27 | 8.7 | 2.7 | 5.1 | 230.2 | 223 | 109 | 107 | 17 | 69 | 131 | 5 | 0 | 0 | 3 | 20 | 4 | 4 | 3.77 |
| SP | Clemens, R.Clemens, Roger >> | 27 | 1989 | R | 73 | 33 | 33 | 13 | 10 | 4.29 | .334 | 1.49 | 9.2 | 4.3 | 6.4 | 216.1 | 221 | 105 | 103 | 14 | 102 | 153 | 3 | 0 | 0 | 1 | 18 | 3 | 5 | 3.88 |
| SP | Glavine, T.Glavine, Tom # >> | 23 | 1989 | L | 67 | 33 | 33 | 11 | 10 | 5.24 | .326 | 1.45 | 10.8 | 2.3 | 4.6 | 195.2 | 234 | 118 | 114 | 20 | 50 | 100 | 2 | 0 | 0 | 0 | 13 | 0 | 6 | 4.08 |
| SP | Magrane, J.Magrane, Joe >> | 25 | 1989 | L | 50 | 31 | 31 | 13 | 12 | 5.67 | .344 | 1.56 | 10.9 | 3.1 | 4.4 | 200.0 | 242 | 133 | 126 | 24 | 69 | 97 | 1 | 0 | 0 | 0 | 10 | 3 | 7 | 4.67 |
| RP | McClure, B.McClure, Bob >> | 37 | 1989 | L | 86 | 54 | 0 | 3 | 1 | 4.29 | .292 | 1.24 | 7.9 | 3.2 | 5.4 | 42.0 | 37 | 20 | 20 | 6 | 15 | 25 | 0 | 1 | 2 | 0 | 0 | 0 | 0 | 4.74 |
| RP | Montgomery, J.Montgomery, Jeff >> | 27 | 1989 | R | 97 | 54 | 0 | 4 | 3 | 4.15 | .316 | 1.37 | 8.7 | 3.7 | 10.0 | 56.1 | 54 | 26 | 26 | 2 | 23 | 62 | 0 | 10 | 4 | 0 | 0 | 1 | 3 | 2.54 |
| RP | Minton, G.Minton, Greg >> | 38 | 1989 | R | 46 | 44 | 0 | 3 | 1 | 4.08 | .319 | 1.38 | 8.8 | 3.7 | 3.9 | 46.1 | 45 | 22 | 21 | 2 | 19 | 20 | 0 | 0 | 1 | 0 | 0 | 1 | 2 | 4.00 |