| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 12.5 | 196309131_LAN_PHI |
| Bob Friend | PIT | 7.8 | 196309120_LAN_PIT |
| Gary Peters | CHA | 6.9 | 196309140_CHA_TEX |
| Juan Marichal | SFN | 5.09 | 196309120_SFN_NYN |
| Larry Jackson | CHN | 4.6 | 196309120_CHN_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill Stafford | NYA | -3.49 | 196309141_NYA_MIN |
| Tracy Stallard | NYN | -1.82 | 196309120_SFN_NYN |
| Dave Wickersham | OAK | -1.77 | 196309130_BOS_OAK |
| Jim Bunning | DET | -1.62 | 196309140_BAL_DET |
| Cal Koonce | CHN | -0.65 | 196309140_CIN_CHN |
Based on accumulated WAA for this season up to 1963-09-14.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 10.27 | Sandy Koufax | 289.3 | LAN |
| +003+ | 8.3 | Dick Ellsworth | 266.3 | CHN |
| +007+ | 7.32 | Gary Peters | 224.7 | CHA |
| +009+ | 7.04 | Juan Marichal | 286 | SFN |
| +010+ | 7.01 | Bob Friend | 254 | PIT |
| +017+ | 5.67 | Larry Jackson | 252 | CHN |
| +018+ | 5.47 | Jim Bouton | 235.3 | NYA |
| +025+ | 4.97 | Curt Simmons | 219.3 | SLN |
| +026+ | 4.65 | Jim Maloney | 230 | CIN |
| +027+ | 4.63 | Steve Barber | 247.7 | BAL |
| +028+ | 4.57 | Camilo Pascual | 221.3 | MIN |
| +029+ | 4.47 | Don Drysdale | 287.7 | LAN |
| +030+ | 4.46 | Warren Spahn | 229 | ATL |
| +036+ | 4.12 | Joe Nuxhall | 198 | CIN |
| +040+ | 3.97 | Jim O'Toole | 229.3 | CIN |
| +042+ | 3.74 | Al Downing | 154.7 | NYA |
| +047+ | 3.47 | Ray Culp | 198.3 | PHI |
| +051+ | 3.34 | Whitey Ford | 245.3 | NYA |
| +053+ | 3.29 | Lee Stange | 143.7 | MIN |
| +056+ | 3.16 | Milt Pappas | 209 | BAL |
| +057+ | 3.12 | Ken Johnson | 205.7 | HOU |
| +069+ | 2.76 | Bob Sadowski | 105.3 | ATL |
| +080+ | 2.53 | Carl Willey | 171 | NYN |
| +079+ | 2.53 | Denny Lemaster | 215.3 | ATL |
| +085+ | 2.31 | Bob Veale | 51.7 | PIT |
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