| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 11.35 | 196307120_LAN_NYN |
| Bob Friend | PIT | 8.25 | 196307100_HOU_PIT |
| Jim O'Toole | CIN | 7.59 | 196307120_CHN_CIN |
| Juan Marichal | SFN | 4.49 | 196307110_SFN_PHI |
| Whitey Ford | NYA | 3.53 | 196307110_NYA_ANA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Craig | NYN | -1.73 | 196307110_LAN_NYN |
| Bennie Daniels | TEX | -0.82 | 196307120_BAL_TEX |
| Don Cardwell | PIT | -0.74 | 196307110_HOU_PIT |
| Lew Burdette | SLN | -0.35 | 196307112_ATL_SLN |
| Art Mahaffey | PHI | -0.31 | 196307120_SFN_PHI |
Based on accumulated WAA for this season up to 1963-07-12.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.79 | Sandy Koufax | 165.3 | LAN |
| +002+ | 5.76 | Dick Ellsworth | 158 | CHN |
| +004+ | 5.45 | Bob Friend | 158.7 | PIT |
| +006+ | 5.18 | Jim O'Toole | 159 | CIN |
| +009+ | 4.71 | Larry Jackson | 152.7 | CHN |
| +010+ | 4.64 | Juan Marichal | 170.3 | SFN |
| +017+ | 3.33 | Juan Pizarro | 137 | CHA |
| +020+ | 3.1 | Ray Culp | 137 | PHI |
| +026+ | 2.87 | Denny Lemaster | 128.3 | ATL |
| +028+ | 2.78 | Don Schwall | 94.3 | PIT |
| +031+ | 2.76 | Steve Barber | 142.3 | BAL |
| +036+ | 2.56 | Carl Willey | 119.7 | NYN |
| +037+ | 2.55 | Don Drysdale | 178 | LAN |
| +040+ | 2.46 | Joe Nuxhall | 105 | CIN |
| +042+ | 2.43 | Earl Wilson | 132.7 | BOS |
| +043+ | 2.41 | Bobby Bolin | 62.3 | SFN |
| +045+ | 2.4 | John Buzhardt | 117.3 | CHA |
| +048+ | 2.37 | Whitey Ford | 138 | NYA |
| +051+ | 2.31 | Jack Kralick | 114 | TOT |
| +052+ | 2.3 | Warren Spahn | 148 | ATL |
| +054+ | 2.27 | Camilo Pascual | 108.7 | MIN |
| +055+ | 2.24 | Ken McBride | 160.7 | ANA |
| +056+ | 2.22 | Tom Cheney | 127.7 | TEX |
| +064+ | 1.99 | Jim Bouton | 120.3 | NYA |
| +066+ | 1.95 | Jim Maloney | 137.3 | CIN |
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