| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 10.45 | 196308250_ATL_LAN |
| Dick Ellsworth | CHN | 7.08 | 196308250_NYN_CHN |
| Gary Peters | CHA | 6.25 | 196308252_CHA_NYA |
| Juan Marichal | SFN | 5.37 | 196308260_SLN_SFN |
| Camilo Pascual | MIN | 2.62 | 196308250_MIN_BAL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jay Hook | NYN | -7.74 | 196308250_NYN_CHN |
| Jim Bunning | DET | -1.89 | 196308252_OAK_DET |
| Dick Donovan | CLE | -1.83 | 196308240_BOS_CLE |
| Steve Ridzik | TEX | -1.41 | 196308262_MIN_TEX |
| Lew Burdette | SLN | -0.96 | 196308250_SLN_HOU |
Based on accumulated WAA for this season up to 1963-08-26.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 8.66 | Sandy Koufax | 247.3 | LAN |
| +003+ | 8.01 | Dick Ellsworth | 234.7 | CHN |
| +004+ | 7.51 | Gary Peters | 192.3 | CHA |
| +008+ | 6.9 | Larry Jackson | 228.7 | CHN |
| +009+ | 6.78 | Bob Friend | 222 | PIT |
| +012+ | 5.88 | Juan Marichal | 255 | SFN |
| +016+ | 5.04 | Juan Pizarro | 206 | CHA |
| +020+ | 4.64 | Camilo Pascual | 187.7 | MIN |
| +021+ | 4.6 | Steve Barber | 221.3 | BAL |
| +026+ | 4.29 | Jim O'Toole | 212.3 | CIN |
| +027+ | 4.21 | Jim Bouton | 195 | NYA |
| +028+ | 4.2 | Ken McBride | 231 | ANA |
| +030+ | 4.18 | Don Drysdale | 262 | LAN |
| +031+ | 4.06 | Warren Spahn | 191.7 | ATL |
| +043+ | 3.39 | Jim Maloney | 196.3 | CIN |
| +046+ | 3.14 | Al Downing | 130.7 | NYA |
| +052+ | 3.03 | John Buzhardt | 126.3 | CHA |
| +056+ | 2.97 | Curt Simmons | 181.3 | SLN |
| +059+ | 2.84 | Milt Pappas | 181.7 | BAL |
| +060+ | 2.77 | Tom Cheney | 136.7 | TEX |
| +064+ | 2.72 | Denny Lemaster | 193.3 | ATL |
| +067+ | 2.64 | Joe Nuxhall | 164.3 | CIN |
| +074+ | 2.44 | Turk Farrell | 158.7 | HOU |
| +075+ | 2.38 | Billy O'Dell | 172.7 | SFN |
| +077+ | 2.33 | Carl Willey | 142 | NYN |
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