| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dick Ellsworth | CHN | 7.52 | 196309200_ATL_CHN |
| Gary Peters | CHA | 6.22 | 196309182_BOS_CHA |
| Juan Marichal | SFN | 5.87 | 196309200_NYN_SFN |
| Jim Bouton | NYA | 3.35 | 196309202_OAK_NYA |
| Steve Barber | BAL | 2.39 | 196309181_BAL_ANA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dave Wickersham | OAK | -2.31 | 196309180_OAK_TEX |
| Bo Belinsky | ANA | -1.93 | 196309190_BAL_ANA |
| Ray Sadecki | SLN | -1.59 | 196309200_SLN_CIN |
| Dick Drott | HOU | -1.09 | 196309180_HOU_CIN |
| Cal Koonce | CHN | -1.08 | 196309180_CHN_PIT |
Based on accumulated WAA for this season up to 1963-09-20.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 10.88 | Sandy Koufax | 298.3 | LAN |
| +004+ | 8.88 | Dick Ellsworth | 281.7 | CHN |
| +007+ | 7.58 | Gary Peters | 233.7 | CHA |
| +008+ | 7.39 | Juan Marichal | 304 | SFN |
| +012+ | 6.99 | Bob Friend | 262 | PIT |
| +016+ | 6.31 | Larry Jackson | 260.3 | CHN |
| +020+ | 5.25 | Don Drysdale | 304 | LAN |
| +022+ | 5.2 | Camilo Pascual | 230.3 | MIN |
| +024+ | 5.09 | Jim Bouton | 242.3 | NYA |
| +026+ | 4.95 | Steve Barber | 254.7 | BAL |
| +027+ | 4.9 | Curt Simmons | 227.3 | SLN |
| +032+ | 4.15 | Whitey Ford | 259.3 | NYA |
| +037+ | 3.91 | Jim O'Toole | 229.3 | CIN |
| +038+ | 3.89 | Jim Maloney | 236.7 | CIN |
| +039+ | 3.86 | Warren Spahn | 232 | ATL |
| +042+ | 3.82 | Ken Johnson | 214.7 | HOU |
| +040+ | 3.82 | Al Downing | 161.7 | NYA |
| +044+ | 3.76 | Joe Nuxhall | 199.3 | CIN |
| +054+ | 3.45 | Lee Stange | 151.7 | MIN |
| +062+ | 3.03 | Bob Veale | 60.7 | PIT |
| +064+ | 3 | Ray Culp | 203.3 | PHI |
| +075+ | 2.69 | Bob Sadowski | 112.3 | ATL |
| +077+ | 2.6 | Denny Lemaster | 226.7 | ATL |
| +079+ | 2.53 | Bob Shaw | 155 | ATL |
| +083+ | 2.46 | Milt Pappas | 216.3 | BAL |
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