| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 11.42 | 196307250_PIT_LAN |
| Bob Friend | PIT | 8.35 | 196307270_PIT_SFN |
| Juan Marichal | SFN | 5.99 | 196307270_PIT_SFN |
| Larry Jackson | CHN | 5.51 | 196307270_SLN_CHN |
| Juan Pizarro | CHA | 4.52 | 196307272_CHA_BAL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Galen Cisco | NYN | -3.25 | 196307250_NYN_SFN |
| Barry Latman | CLE | -2.13 | 196307250_MIN_CLE |
| Ed Rakow | OAK | -0.89 | 196307250_OAK_BOS |
| Joe Horlen | CHA | -0.55 | 196307250_CHA_DET |
| Don Rudolph | TEX | -0.54 | 196307260_TEX_DET |
Based on accumulated WAA for this season up to 1963-07-27.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 6.79 | Sandy Koufax | 185.7 | LAN |
| +003+ | 6.65 | Bob Friend | 187.3 | PIT |
| +004+ | 6.56 | Dick Ellsworth | 179.7 | CHN |
| +005+ | 6.52 | Juan Marichal | 198.3 | SFN |
| +008+ | 5.62 | Larry Jackson | 183.7 | CHN |
| +009+ | 5.1 | Juan Pizarro | 159.7 | CHA |
| +010+ | 5.08 | Jim O'Toole | 172 | CIN |
| +016+ | 4 | Ken McBride | 187.7 | ANA |
| +017+ | 3.94 | Gary Peters | 127 | CHA |
| +024+ | 3.5 | Denny Lemaster | 150 | ATL |
| +026+ | 3.44 | Joe Nuxhall | 129 | CIN |
| +028+ | 3.38 | Don Drysdale | 200.7 | LAN |
| +035+ | 3.04 | John Buzhardt | 126.3 | CHA |
| +040+ | 2.78 | Steve Barber | 166.3 | BAL |
| +042+ | 2.72 | Camilo Pascual | 126.7 | MIN |
| +043+ | 2.7 | Ray Culp | 144.3 | PHI |
| +044+ | 2.69 | Milt Pappas | 139.3 | BAL |
| +045+ | 2.69 | Warren Spahn | 155.7 | ATL |
| +046+ | 2.67 | Jim Bouton | 151 | NYA |
| +047+ | 2.62 | Don Schwall | 107 | PIT |
| +051+ | 2.52 | Jim Maloney | 153.7 | CIN |
| +054+ | 2.44 | Tom Cheney | 128.7 | TEX |
| +063+ | 2.29 | Bobby Bolin | 78 | SFN |
| +064+ | 2.28 | Johnny Podres | 137.7 | LAN |
| +067+ | 2.24 | Bob Buhl | 162.3 | CHN |
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