| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 5.45 | 196305110_SFN_LAN |
| Dick Donovan | CLE | 3.26 | 196305110_CLE_DET |
| Bob Purkey | CIN | 2.9 | 196305121_CIN_NYN |
| Steve Barber | BAL | 1.72 | 196305120_NYA_BAL |
| Joe Gibbon | PIT | 1.7 | 196305121_SLN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jay Hook | NYN | -7.03 | 196305122_CIN_NYN |
| Ray Sadecki | SLN | -3.35 | 196305122_SLN_PIT |
| Ted Bowsfield | OAK | -2.03 | 196305110_OAK_MIN |
| Jim Owens | CIN | -1.88 | 196305122_CIN_NYN |
| Jack Fisher | SFN | -1.62 | 196305120_SFN_LAN |
Based on accumulated WAA for this season up to 1963-05-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 2.64 | Curt Simmons | 51 | SLN |
| +005+ | 2.54 | Dick Ellsworth | 41.7 | CHN |
| +006+ | 2.5 | Sandy Koufax | 46.7 | LAN |
| +007+ | 2.31 | Steve Barber | 72.7 | BAL |
| +009+ | 2.11 | Bob Buhl | 59.7 | CHN |
| +010+ | 2.06 | Juan Pizarro | 43 | CHA |
| +011+ | 1.98 | Joe Gibbon | 27 | PIT |
| +014+ | 1.82 | Joe Nuxhall | 37 | CIN |
| +015+ | 1.8 | Tom Cheney | 47.3 | TEX |
| +017+ | 1.75 | Dave Morehead | 32.7 | BOS |
| +020+ | 1.58 | Jim O'Toole | 62 | CIN |
| +022+ | 1.57 | Ray Washburn | 53.3 | SLN |
| +024+ | 1.54 | Orlando Pena | 45 | OAK |
| +026+ | 1.49 | Don Schwall | 31.3 | PIT |
| +027+ | 1.47 | Ernie Broglio | 54.7 | SLN |
| +028+ | 1.46 | Billy O'Dell | 44.7 | SFN |
| +031+ | 1.4 | Carl Willey | 29.7 | NYN |
| +035+ | 1.36 | Larry Jackson | 63.3 | CHN |
| +038+ | 1.27 | Earl Wilson | 50.3 | BOS |
| +039+ | 1.26 | Jack Sanford | 63.3 | SFN |
| XXXXX | 1.24 | Phil Regan | 40.3 | DET |
| XXXXX | 1.23 | Johnny Klippstein | 30.7 | PHI |
| XXXXX | 1.21 | Denny Lemaster | 30.3 | ATL |
| XXXXX | 1.2 | Jim Bouton | 35.3 | NYA |
| XXXXX | 1.19 | Milt Pappas | 27.7 | BAL |
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