| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bob Friend | PIT | 8.62 | 196307230_PIT_LAN |
| Juan Marichal | SFN | 5.19 | 196307230_NYN_SFN |
| Larry Jackson | CHN | 5.07 | 196307230_CIN_CHN |
| Don Drysdale | LAN | 2.79 | 196307240_PIT_LAN |
| Whitey Ford | NYA | 2.32 | 196307240_ANA_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ray Sadecki | SLN | -3.82 | 196307230_SLN_ATL |
| Al Jackson | NYN | -1.75 | 196307240_NYN_SFN |
| Dave Wickersham | OAK | -1.52 | 196307242_OAK_BOS |
| Paul Foytack | ANA | -1.2 | 196307230_ANA_NYA |
| Stan Williams | NYA | -0.83 | 196307230_ANA_NYA |
Based on accumulated WAA for this season up to 1963-07-24.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.2 | Sandy Koufax | 179.7 | LAN |
| +003+ | 6.62 | Dick Ellsworth | 179.7 | CHN |
| +004+ | 6.32 | Bob Friend | 180.3 | PIT |
| +005+ | 6.06 | Juan Marichal | 189.3 | SFN |
| +007+ | 5.66 | Larry Jackson | 175.7 | CHN |
| +009+ | 5.12 | Jim O'Toole | 172 | CIN |
| +013+ | 4.65 | Juan Pizarro | 151 | CHA |
| +014+ | 3.97 | Gary Peters | 127 | CHA |
| +021+ | 3.53 | Denny Lemaster | 150 | ATL |
| +022+ | 3.44 | Don Drysdale | 200.7 | LAN |
| +024+ | 3.4 | Steve Barber | 160.3 | BAL |
| +025+ | 3.32 | Ken McBride | 178.7 | ANA |
| +033+ | 3.09 | Jim Bouton | 142.7 | NYA |
| +034+ | 3.07 | John Buzhardt | 126.3 | CHA |
| +039+ | 2.95 | Joe Nuxhall | 120 | CIN |
| +044+ | 2.73 | Camilo Pascual | 126.7 | MIN |
| +045+ | 2.64 | Don Schwall | 107 | PIT |
| +048+ | 2.57 | Jim Maloney | 153.7 | CIN |
| +049+ | 2.53 | Warren Spahn | 148 | ATL |
| +051+ | 2.5 | Johnny Podres | 132 | LAN |
| +056+ | 2.39 | Tom Cheney | 127.7 | TEX |
| +062+ | 2.26 | Bobby Bolin | 74.7 | SFN |
| +064+ | 2.25 | Bob Buhl | 154 | CHN |
| +069+ | 2.16 | Dallas Green | 78 | PHI |
| +078+ | 2 | Milt Pappas | 130.3 | BAL |
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