| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 12.18 | 196308070_LAN_CHN |
| Bob Friend | PIT | 7.57 | 196308080_ATL_PIT |
| Larry Jackson | CHN | 6.29 | 196308060_LAN_CHN |
| Juan Pizarro | CHA | 5.66 | 196308070_CHA_OAK |
| Jim O'Toole | CIN | 5.27 | 196308061_CIN_PHI |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dick Donovan | CLE | -3.68 | 196308080_CLE_BAL |
| Al Jackson | NYN | -2.81 | 196308080_SLN_NYN |
| Ray Sadecki | SLN | -2.77 | 196308080_SLN_NYN |
| Bennie Daniels | TEX | -2.26 | 196308062_NYA_TEX |
| Paul Foytack | ANA | -1.87 | 196308080_MIN_ANA |
Based on accumulated WAA for this season up to 1963-08-08.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.41 | Sandy Koufax | 213 | LAN |
| +003+ | 7.05 | Bob Friend | 203.7 | PIT |
| +004+ | 6.84 | Dick Ellsworth | 201.3 | CHN |
| +005+ | 6.53 | Juan Marichal | 214.3 | SFN |
| +008+ | 6.03 | Larry Jackson | 199 | CHN |
| +011+ | 5.59 | Juan Pizarro | 176.3 | CHA |
| +012+ | 5.04 | Jim O'Toole | 185.7 | CIN |
| +014+ | 4.83 | Gary Peters | 151.3 | CHA |
| +020+ | 3.98 | Steve Barber | 190.7 | BAL |
| +024+ | 3.57 | Ken McBride | 208.7 | ANA |
| +025+ | 3.56 | Joe Nuxhall | 142.3 | CIN |
| +029+ | 3.46 | Jim Maloney | 176.7 | CIN |
| +031+ | 3.41 | Milt Pappas | 163 | BAL |
| +032+ | 3.37 | Camilo Pascual | 151.7 | MIN |
| +040+ | 3.16 | Jim Bouton | 161.7 | NYA |
| +043+ | 3.09 | Dick Stigman | 174 | MIN |
| +044+ | 3.06 | Warren Spahn | 164.7 | ATL |
| +046+ | 3.03 | John Buzhardt | 126.3 | CHA |
| +049+ | 2.96 | Johnny Podres | 145.7 | LAN |
| +054+ | 2.84 | Don Drysdale | 222 | LAN |
| +056+ | 2.75 | Tom Cheney | 131.7 | TEX |
| +058+ | 2.7 | Denny Lemaster | 168 | ATL |
| +060+ | 2.57 | Turk Farrell | 134.7 | HOU |
| +061+ | 2.54 | Billy O'Dell | 167.3 | SFN |
| +068+ | 2.28 | Joe Gibbon | 94.3 | PIT |
_