| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 11.35 | 196307120_LAN_NYN |
| 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 |
| Juan Pizarro | CHA | 3.51 | 196307120_DET_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Craig | NYN | -1.73 | 196307110_LAN_NYN |
| Vern Law | PIT | -1.48 | 196307130_HOU_PIT |
| Ike Delock | BAL | -1.36 | 196307130_BAL_TEX |
| Diego Segui | OAK | -0.86 | 196307131_CLE_OAK |
| Bennie Daniels | TEX | -0.82 | 196307120_BAL_TEX |
Based on accumulated WAA for this season up to 1963-07-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.82 | Sandy Koufax | 165.3 | LAN |
| +003+ | 5.78 | Dick Ellsworth | 158 | CHN |
| +004+ | 5.46 | Bob Friend | 158.7 | PIT |
| +006+ | 5.21 | Jim O'Toole | 159 | CIN |
| +009+ | 4.73 | Larry Jackson | 152.7 | CHN |
| +010+ | 4.68 | Juan Marichal | 170.3 | SFN |
| +016+ | 3.35 | Juan Pizarro | 137 | CHA |
| +020+ | 3.12 | Ray Culp | 137 | PHI |
| +025+ | 2.93 | Steve Barber | 144 | BAL |
| +026+ | 2.88 | Denny Lemaster | 128.3 | ATL |
| +028+ | 2.79 | Don Schwall | 94.3 | PIT |
| +035+ | 2.58 | Carl Willey | 119.7 | NYN |
| +037+ | 2.57 | Don Drysdale | 178 | LAN |
| +041+ | 2.48 | Joe Nuxhall | 105 | CIN |
| +042+ | 2.46 | Earl Wilson | 132.7 | BOS |
| +044+ | 2.42 | Bobby Bolin | 62.3 | SFN |
| +045+ | 2.41 | John Buzhardt | 117.3 | CHA |
| +046+ | 2.41 | Whitey Ford | 138 | NYA |
| +052+ | 2.32 | Warren Spahn | 148 | ATL |
| +053+ | 2.28 | Camilo Pascual | 108.7 | MIN |
| +054+ | 2.26 | Ken McBride | 160.7 | ANA |
| +055+ | 2.23 | Tom Cheney | 127.7 | TEX |
| +060+ | 2.09 | Jim Bouton | 126.3 | NYA |
| +064+ | 1.97 | Jim Maloney | 137.3 | CIN |
| +070+ | 1.88 | Ernie Broglio | 134.3 | SLN |
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