| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 11.09 | 196308150_LAN_ATL |
| Bob Friend | PIT | 9.3 | 196308170_PHI_PIT |
| Juan Marichal | SFN | 7.54 | 196308170_SFN_SLN |
| Dick Ellsworth | CHN | 7.37 | 196308161_CHN_CIN |
| Gary Peters | CHA | 4.34 | 196308170_NYA_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ray Sadecki | SLN | -2.57 | 196308150_HOU_SLN |
| Tracy Stallard | NYN | -2.3 | 196308170_LAN_NYN |
| Bennie Daniels | TEX | -2.29 | 196308170_TEX_MIN |
| Jim Bunning | DET | -1.52 | 196308170_DET_ANA |
| Joey Jay | CIN | -1.09 | 196308162_CHN_CIN |
Based on accumulated WAA for this season up to 1963-08-17.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 7.99 | Dick Ellsworth | 219.3 | CHN |
| +003+ | 7.5 | Sandy Koufax | 226.7 | LAN |
| +005+ | 6.89 | Bob Friend | 216 | PIT |
| +006+ | 6.75 | Juan Marichal | 237.3 | SFN |
| +008+ | 6.69 | Larry Jackson | 213.7 | CHN |
| +010+ | 6.19 | Gary Peters | 171.3 | CHA |
| +016+ | 4.93 | Steve Barber | 207.7 | BAL |
| +017+ | 4.74 | Juan Pizarro | 190 | CHA |
| +021+ | 4.18 | Jim Maloney | 185.7 | CIN |
| +024+ | 4.07 | Jim Bouton | 177.7 | NYA |
| +032+ | 3.56 | Don Drysdale | 237.7 | LAN |
| +035+ | 3.44 | Camilo Pascual | 168.7 | MIN |
| +036+ | 3.38 | Ken McBride | 222 | ANA |
| +037+ | 3.38 | Jim O'Toole | 196.3 | CIN |
| +044+ | 3.17 | Warren Spahn | 173.7 | ATL |
| +049+ | 3 | John Buzhardt | 126.3 | CHA |
| +050+ | 2.94 | Joe Nuxhall | 155.3 | CIN |
| +052+ | 2.92 | Milt Pappas | 172.7 | BAL |
| +057+ | 2.65 | Billy O'Dell | 168.3 | SFN |
| +058+ | 2.64 | Tom Cheney | 135 | TEX |
| +059+ | 2.6 | Turk Farrell | 150.7 | HOU |
| +068+ | 2.38 | Denny Lemaster | 187.3 | ATL |
| +071+ | 2.33 | Don Schwall | 134.3 | PIT |
| +074+ | 2.28 | Ray Culp | 164.7 | PHI |
| +079+ | 2.19 | Dick Stigman | 181.7 | MIN |
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