| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dick Ellsworth | CHN | 9.09 | 196309280_CHN_ATL |
| Juan Marichal | SFN | 5.81 | 196309280_PIT_SFN |
| Gary Peters | CHA | 5.42 | 196309290_TEX_CHA |
| Camilo Pascual | MIN | 3.59 | 196309270_MIN_NYA |
| Don Drysdale | LAN | 3.25 | 196309290_PHI_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dave Wickersham | OAK | -2.88 | 196309270_CLE_OAK |
| Ray Sadecki | SLN | -1.32 | 196309270_CIN_SLN |
| Al Jackson | NYN | -1.1 | 196309270_NYN_HOU |
| Cal Koonce | CHN | -0.94 | 196309270_CHN_ATL |
| Dave McNally | BAL | -0.91 | 196309280_DET_BAL |
Based on accumulated WAA for this season up to 1963-09-29.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 11.21 | Sandy Koufax | 311 | LAN |
| +003+ | 9.35 | Dick Ellsworth | 290.7 | CHN |
| +008+ | 7.64 | Juan Marichal | 321 | SFN |
| +012+ | 7.06 | Bob Friend | 268.3 | PIT |
| +016+ | 6.18 | Gary Peters | 242.7 | CHA |
| +017+ | 5.96 | Don Drysdale | 316.3 | LAN |
| +018+ | 5.83 | Larry Jackson | 275.7 | CHN |
| +019+ | 5.79 | Camilo Pascual | 248.3 | MIN |
| +023+ | 5.4 | Jim Bouton | 249.3 | NYA |
| +026+ | 5.22 | Curt Simmons | 232.3 | SLN |
| +027+ | 4.94 | Warren Spahn | 259 | ATL |
| +028+ | 4.78 | Whitey Ford | 270.3 | NYA |
| +031+ | 4.51 | Joe Nuxhall | 217.3 | CIN |
| +033+ | 4.44 | Bob Veale | 78 | PIT |
| +034+ | 4.39 | Steve Barber | 259 | BAL |
| +037+ | 4.21 | Ken Johnson | 223 | HOU |
| +039+ | 4.08 | Jim Maloney | 250.7 | CIN |
| +057+ | 3.45 | Al Downing | 175.7 | NYA |
| +058+ | 3.38 | Jim O'Toole | 234.3 | CIN |
| +066+ | 2.99 | Lee Stange | 164.3 | MIN |
| +069+ | 2.86 | Ernie Broglio | 250 | SLN |
| +070+ | 2.83 | Bob Shaw | 159 | ATL |
| +079+ | 2.41 | Milt Pappas | 216.3 | BAL |
| +085+ | 2.35 | Ray Culp | 203.3 | PHI |
| +086+ | 2.35 | Bob Miller | 187 | LAN |
_