| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 8.3 | 196306010_LAN_CIN |
| Jim O'Toole | CIN | 5.24 | 196306020_LAN_CIN |
| Whitey Ford | NYA | 5.01 | 196305310_NYA_CLE |
| Bob Friend | PIT | 3.78 | 196306010_PIT_NYN |
| Curt Simmons | SLN | 2.48 | 196305310_SFN_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Galen Cisco | NYN | -3.28 | 196306010_PIT_NYN |
| Gene Conley | BOS | -2.79 | 196305310_BOS_CHA |
| Sam McDowell | CLE | -1.67 | 196306022_NYA_CLE |
| Ted Bowsfield | OAK | -1.59 | 196306020_TEX_OAK |
| Jack Fisher | SFN | -1.45 | 196306010_SFN_SLN |
Based on accumulated WAA for this season up to 1963-06-02.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.62 | Dick Ellsworth | 82.7 | CHN |
| +002+ | 3.8 | Sandy Koufax | 84.3 | LAN |
| +004+ | 3.32 | Denny Lemaster | 68.3 | ATL |
| +005+ | 3.29 | Larry Jackson | 97.3 | CHN |
| +009+ | 2.98 | Don Schwall | 59 | PIT |
| +017+ | 2.44 | Jim O'Toole | 94.7 | CIN |
| +021+ | 2.34 | Bob Friend | 87 | PIT |
| +023+ | 2.03 | Steve Barber | 96.3 | BAL |
| +026+ | 2.02 | Juan Pizarro | 72.3 | CHA |
| +025+ | 2.02 | Bob Buhl | 84.3 | CHN |
| +027+ | 2.01 | Jack Sanford | 97.7 | SFN |
| +028+ | 2.01 | Jim Bouton | 68 | NYA |
| +031+ | 1.95 | Carl Willey | 64.3 | NYN |
| +035+ | 1.79 | Milt Pappas | 55 | BAL |
| +039+ | 1.72 | Tom Cheney | 75.7 | TEX |
| +041+ | 1.56 | Joe Nuxhall | 69 | CIN |
| +047+ | 1.49 | John Buzhardt | 68.3 | CHA |
| +048+ | 1.48 | Curt Simmons | 75.3 | SLN |
| +055+ | 1.36 | Cal McLish | 75 | PHI |
| +057+ | 1.29 | Jim Maloney | 73.3 | CIN |
| +058+ | 1.26 | Robin Roberts | 79.3 | BAL |
| +059+ | 1.26 | Ernie Broglio | 83 | SLN |
| XXXXX | 1.21 | Joe Gibbon | 42.7 | PIT |
| XXXXX | 1.18 | Dallas Green | 27 | PHI |
| XXXXX | 1.12 | Billy O'Dell | 73.7 | SFN |
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