| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 12.18 | 196308070_LAN_CHN |
| Bob Friend | PIT | 7.57 | 196308080_ATL_PIT |
| Juan Marichal | SFN | 6.67 | 196308090_SFN_PHI |
| Juan Pizarro | CHA | 5.66 | 196308070_CHA_OAK |
| Dick Ellsworth | CHN | 5.12 | 196308070_LAN_CHN |
| 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 |
| Paul Foytack | ANA | -1.87 | 196308080_MIN_ANA |
| Dave McNally | BAL | -1.25 | 196308090_BAL_TEX |
Based on accumulated WAA for this season up to 1963-08-09.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.4 | Sandy Koufax | 213 | LAN |
| +003+ | 7.23 | Juan Marichal | 223.3 | SFN |
| +004+ | 6.89 | Bob Friend | 203.7 | PIT |
| +005+ | 6.82 | Dick Ellsworth | 201.3 | CHN |
| +008+ | 6.01 | Larry Jackson | 199 | CHN |
| +010+ | 5.55 | Juan Pizarro | 176.3 | CHA |
| +013+ | 5.01 | Jim O'Toole | 185.7 | CIN |
| +014+ | 4.81 | Gary Peters | 151.3 | CHA |
| +022+ | 3.95 | Steve Barber | 190.7 | BAL |
| +023+ | 3.87 | Jim Bouton | 170.7 | NYA |
| +026+ | 3.55 | Ken McBride | 208.7 | ANA |
| +030+ | 3.43 | Jim Maloney | 176.7 | CIN |
| +032+ | 3.42 | Joe Nuxhall | 151 | CIN |
| +035+ | 3.38 | Milt Pappas | 163 | BAL |
| +036+ | 3.35 | Camilo Pascual | 151.7 | MIN |
| +042+ | 3.07 | Dick Stigman | 174 | MIN |
| +044+ | 3.04 | Warren Spahn | 164.7 | ATL |
| +047+ | 3.01 | John Buzhardt | 126.3 | CHA |
| +048+ | 2.94 | Johnny Podres | 150.7 | LAN |
| +054+ | 2.83 | Don Drysdale | 222 | LAN |
| +055+ | 2.74 | Tom Cheney | 131.7 | TEX |
| +057+ | 2.68 | Denny Lemaster | 168 | ATL |
| +060+ | 2.52 | Billy O'Dell | 167.3 | SFN |
| +061+ | 2.5 | Don Schwall | 129 | PIT |
| +063+ | 2.47 | Turk Farrell | 134.7 | HOU |
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