| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 8.3 | 196306010_LAN_CIN |
| Jim O'Toole | CIN | 5.24 | 196306020_LAN_CIN |
| Bob Friend | PIT | 3.78 | 196306010_PIT_NYN |
| Camilo Pascual | MIN | 2.22 | 196306030_MIN_OAK |
| Juan Pizarro | CHA | 1.36 | 196306022_BOS_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Galen Cisco | NYN | -3.28 | 196306010_PIT_NYN |
| Sam McDowell | CLE | -1.67 | 196306022_NYA_CLE |
| Ted Bowsfield | OAK | -1.59 | 196306020_TEX_OAK |
| Jack Fisher | SFN | -1.45 | 196306010_SFN_SLN |
| Joe Horlen | CHA | -1.3 | 196306010_BOS_CHA |
Based on accumulated WAA for this season up to 1963-06-03.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.59 | Dick Ellsworth | 82.7 | CHN |
| +002+ | 3.79 | Sandy Koufax | 84.3 | LAN |
| +004+ | 3.3 | Denny Lemaster | 68.3 | ATL |
| +006+ | 3.26 | Larry Jackson | 97.3 | CHN |
| +010+ | 2.96 | Don Schwall | 59 | PIT |
| +020+ | 2.41 | Jim O'Toole | 94.7 | CIN |
| +021+ | 2.32 | Bob Friend | 87 | PIT |
| +027+ | 2 | Bob Buhl | 84.3 | CHN |
| +025+ | 2 | Steve Barber | 96.3 | BAL |
| +026+ | 2 | Juan Pizarro | 72.3 | CHA |
| +028+ | 1.99 | Jim Bouton | 68 | NYA |
| +029+ | 1.98 | Jack Sanford | 97.7 | SFN |
| +032+ | 1.93 | Carl Willey | 64.3 | NYN |
| +037+ | 1.77 | Milt Pappas | 55 | BAL |
| +039+ | 1.7 | Tom Cheney | 75.7 | TEX |
| +043+ | 1.54 | Joe Nuxhall | 69 | CIN |
| +047+ | 1.47 | John Buzhardt | 68.3 | CHA |
| +048+ | 1.46 | Curt Simmons | 75.3 | SLN |
| +051+ | 1.38 | Turk Farrell | 82.7 | HOU |
| +055+ | 1.33 | Cal McLish | 75 | PHI |
| +056+ | 1.29 | Camilo Pascual | 91.7 | MIN |
| +059+ | 1.27 | Jim Maloney | 73.3 | CIN |
| XXXXX | 1.24 | Ernie Broglio | 83 | SLN |
| XXXXX | 1.24 | Robin Roberts | 79.3 | BAL |
| XXXXX | 1.2 | Joe Gibbon | 42.7 | PIT |
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