| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim O'Toole | CIN | 8.94 | 196305010_ATL_CIN |
| Warren Spahn | ATL | 7.96 | 196305030_CHN_ATL |
| Ralph Terry | NYA | 6.83 | 196305010_NYA_ANA |
| Bob Friend | PIT | 3.94 | 196305010_SFN_PIT |
| Don Drysdale | LAN | 3.26 | 196305020_LAN_PHI |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jay Hook | NYN | -6.68 | 196305030_SFN_NYN |
| Ray Sadecki | SLN | -2.23 | 196305010_CHN_SLN |
| Don Cardwell | PIT | -2.08 | 196305020_SFN_PIT |
| Lew Burdette | ATL | -1.76 | 196305010_ATL_CIN |
| Joe Horlen | CHA | -1.75 | 196305012_BAL_CHA |
Based on accumulated WAA for this season up to 1963-05-03.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 2.58 | Tom Cheney | 36 | TEX |
| +003+ | 1.85 | Ray Washburn | 44.7 | SLN |
| +004+ | 1.84 | Jim O'Toole | 48 | CIN |
| +005+ | 1.79 | Curt Simmons | 36 | SLN |
| +006+ | 1.72 | Dick Ellsworth | 32.7 | CHN |
| +007+ | 1.71 | Steve Barber | 45.7 | BAL |
| +012+ | 1.44 | Ed Rakow | 40.3 | OAK |
| +015+ | 1.38 | Bob Miller | 36.7 | LAN |
| +017+ | 1.27 | Warren Spahn | 44.7 | ATL |
| +021+ | 1.26 | Sandy Koufax | 29.7 | LAN |
| +019+ | 1.26 | Juan Pizarro | 33.7 | CHA |
| +020+ | 1.26 | Jim Bunning | 41.7 | DET |
| +023+ | 1.25 | Joe Nuxhall | 28 | CIN |
| XXXXX | 1.22 | Ernie Broglio | 44.7 | SLN |
| XXXXX | 1.21 | Billy O'Dell | 29.7 | SFN |
| XXXXX | 1.14 | Orlando Pena | 31 | OAK |
| XXXXX | 1.13 | Milt Pappas | 25 | BAL |
| XXXXX | 1.12 | Bob Buhl | 43.7 | CHN |
| XXXXX | 1.09 | Joe Gibbon | 13.7 | PIT |
| XXXXX | 1.02 | Ken Johnson | 29 | HOU |
| XXXXX | 1.01 | Dave Morehead | 16 | BOS |
| XXXXX | 0.98 | Larry Jackson | 47.3 | CHN |
| XXXXX | 0.96 | Phil Regan | 26.7 | DET |
| XXXXX | 0.96 | Dick Stigman | 41 | MIN |
| XXXXX | 0.89 | Juan Marichal | 42 | SFN |
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