| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 13.34 | 196307161_LAN_PHI |
| Bob Friend | PIT | 8.88 | 196307151_SFN_PIT |
| Juan Marichal | SFN | 4.88 | 196307151_SFN_PIT |
| Larry Jackson | CHN | 4.74 | 196307142_CHN_SLN |
| Whitey Ford | NYA | 4.32 | 196307150_NYA_OAK |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ray Sadecki | SLN | -4 | 196307141_CHN_SLN |
| Galen Cisco | NYN | -3.34 | 196307140_HOU_NYN |
| Barry Latman | CLE | -1.33 | 196307142_CLE_MIN |
| Paul Foytack | ANA | -1.19 | 196307141_BOS_ANA |
| Dave McNally | BAL | -0.59 | 196307142_BAL_CHA |
Based on accumulated WAA for this season up to 1963-07-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.22 | Sandy Koufax | 174.3 | LAN |
| +002+ | 6.38 | Dick Ellsworth | 164.7 | CHN |
| +004+ | 5.93 | Bob Friend | 166.3 | PIT |
| +008+ | 5.18 | Jim O'Toole | 159 | CIN |
| +009+ | 5.01 | Juan Marichal | 178.3 | SFN |
| +010+ | 4.65 | Larry Jackson | 158.7 | CHN |
| +014+ | 3.94 | Juan Pizarro | 144 | CHA |
| +019+ | 3.27 | Denny Lemaster | 135.3 | ATL |
| +026+ | 2.93 | Ray Culp | 139.3 | PHI |
| +028+ | 2.91 | Don Schwall | 100.7 | PIT |
| +031+ | 2.84 | John Buzhardt | 122.3 | CHA |
| +032+ | 2.83 | Ken McBride | 169.7 | ANA |
| +039+ | 2.62 | Gary Peters | 109 | CHA |
| +042+ | 2.57 | Steve Barber | 144 | BAL |
| +044+ | 2.55 | Bobby Bolin | 68.7 | SFN |
| +046+ | 2.53 | Joe Nuxhall | 111 | CIN |
| +050+ | 2.42 | Don Drysdale | 182.7 | LAN |
| +052+ | 2.38 | Warren Spahn | 148 | ATL |
| +054+ | 2.31 | Camilo Pascual | 108.7 | MIN |
| +055+ | 2.28 | Tom Cheney | 127.7 | TEX |
| +059+ | 2.19 | Carl Willey | 124.7 | NYN |
| +061+ | 2.12 | Bob Buhl | 153.3 | CHN |
| +062+ | 2.11 | Jim Bouton | 126.7 | NYA |
| +065+ | 2.05 | Ernie Broglio | 141.3 | SLN |
| +068+ | 2.04 | Milt Pappas | 124.3 | BAL |
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