| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 11.09 | 196308150_LAN_ATL |
| Juan Marichal | SFN | 7.81 | 196308130_SFN_CIN |
| Larry Jackson | CHN | 7.27 | 196308141_CHN_PHI |
| Warren Spahn | ATL | 2.29 | 196308130_LAN_ATL |
| Jim Bouton | NYA | 2.24 | 196308142_NYA_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dick Donovan | CLE | -2.96 | 196308140_CLE_CHA |
| Ray Sadecki | SLN | -2.57 | 196308150_HOU_SLN |
| Al Jackson | NYN | -2.35 | 196308140_PIT_NYN |
| Jim Bunning | DET | -1.76 | 196308130_DET_OAK |
| Dave Wickersham | OAK | -1.27 | 196308130_DET_OAK |
Based on accumulated WAA for this season up to 1963-08-15.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 7.4 | Dick Ellsworth | 210.3 | CHN |
| +003+ | 7.33 | Bob Friend | 211.7 | PIT |
| +004+ | 7.01 | Sandy Koufax | 218.7 | LAN |
| +005+ | 6.97 | Juan Marichal | 230.3 | SFN |
| +007+ | 6.61 | Larry Jackson | 213.7 | CHN |
| +011+ | 5.43 | Gary Peters | 162.3 | CHA |
| +016+ | 4.82 | Juan Pizarro | 181 | CHA |
| +017+ | 4.61 | Jim O'Toole | 191.3 | CIN |
| +020+ | 4.45 | Steve Barber | 199.7 | BAL |
| +022+ | 4.15 | Jim Maloney | 185.7 | CIN |
| +024+ | 4.09 | Ken McBride | 215.7 | ANA |
| +026+ | 4.02 | Jim Bouton | 177.7 | NYA |
| +030+ | 3.6 | Camilo Pascual | 160.7 | MIN |
| +033+ | 3.51 | Don Drysdale | 237.7 | LAN |
| +044+ | 3.14 | Warren Spahn | 173.7 | ATL |
| +050+ | 2.97 | John Buzhardt | 126.3 | CHA |
| +051+ | 2.94 | Dick Stigman | 181 | MIN |
| +052+ | 2.89 | Milt Pappas | 172.7 | BAL |
| +053+ | 2.88 | Joe Nuxhall | 155 | CIN |
| +057+ | 2.61 | Billy O'Dell | 168.3 | SFN |
| +058+ | 2.6 | Tom Cheney | 135 | TEX |
| +066+ | 2.37 | Johnny Podres | 151 | LAN |
| +068+ | 2.32 | Turk Farrell | 142.7 | HOU |
| +070+ | 2.31 | Don Schwall | 134.3 | PIT |
| +074+ | 2.25 | Ray Culp | 164.7 | PHI |
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