| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 10.45 | 196308250_ATL_LAN |
| Dick Ellsworth | CHN | 7.08 | 196308250_NYN_CHN |
| Bob Friend | PIT | 6.98 | 196308270_NYN_PIT |
| Gary Peters | CHA | 6.25 | 196308252_CHA_NYA |
| Juan Marichal | SFN | 5.37 | 196308260_SLN_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jay Hook | NYN | -7.74 | 196308250_NYN_CHN |
| Jim Bunning | DET | -1.89 | 196308252_OAK_DET |
| Barry Latman | CLE | -1.77 | 196308251_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 1963-08-27.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 8.61 | Sandy Koufax | 247.3 | LAN |
| +003+ | 7.96 | Dick Ellsworth | 234.7 | CHN |
| +005+ | 7.47 | Gary Peters | 192.3 | CHA |
| +006+ | 7.46 | Bob Friend | 231 | PIT |
| +010+ | 6.78 | Larry Jackson | 235.7 | CHN |
| +011+ | 5.83 | Juan Marichal | 255 | SFN |
| +016+ | 5 | Juan Pizarro | 206 | CHA |
| +019+ | 4.9 | Jim Bouton | 204 | NYA |
| +021+ | 4.6 | Camilo Pascual | 187.7 | MIN |
| +022+ | 4.54 | Steve Barber | 221.3 | BAL |
| +027+ | 4.31 | Warren Spahn | 200.7 | ATL |
| +028+ | 4.25 | Jim O'Toole | 212.3 | CIN |
| +031+ | 4.12 | Don Drysdale | 262 | LAN |
| +035+ | 3.81 | Ken McBride | 237 | ANA |
| +044+ | 3.36 | Jim Maloney | 196.3 | CIN |
| +046+ | 3.11 | Al Downing | 130.7 | NYA |
| +054+ | 3.01 | John Buzhardt | 126.3 | CHA |
| +059+ | 2.79 | Milt Pappas | 181.7 | BAL |
| +062+ | 2.74 | Tom Cheney | 136.7 | TEX |
| +064+ | 2.68 | Denny Lemaster | 193.3 | ATL |
| +066+ | 2.61 | Joe Nuxhall | 164.3 | CIN |
| +070+ | 2.47 | Curt Simmons | 183.3 | SLN |
| +072+ | 2.41 | Turk Farrell | 158.7 | HOU |
| +074+ | 2.35 | Billy O'Dell | 172.7 | SFN |
| +077+ | 2.3 | Carl Willey | 142 | NYN |
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