| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dick Donovan | CLE | 3.73 | 196305220_ANA_CLE |
| Steve Barber | BAL | 3.13 | 196305220_DET_BAL |
| Curt Simmons | SLN | 3.11 | 196305210_SLN_CHN |
| Don Drysdale | LAN | 2.54 | 196305220_NYN_LAN |
| Jim Bunning | DET | 1.56 | 196305220_DET_BAL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Galen Cisco | NYN | -2.98 | 196305210_NYN_LAN |
| Joe Horlen | CHA | -1.58 | 196305220_CHA_TEX |
| Jim Perry | MIN | -1.19 | 196305210_MIN_BOS |
| Don Cardwell | PIT | -1.09 | 196305200_PIT_HOU |
| Arnold Earley | BOS | -0.86 | 196305220_MIN_BOS |
Based on accumulated WAA for this season up to 1963-05-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.73 | Sandy Koufax | 68 | LAN |
| +003+ | 3.29 | Dick Ellsworth | 58.7 | CHN |
| +004+ | 3.11 | Steve Barber | 87.3 | BAL |
| +010+ | 2.45 | Milt Pappas | 45.7 | BAL |
| +013+ | 2.22 | Curt Simmons | 63.3 | SLN |
| +014+ | 2.19 | Juan Pizarro | 54.3 | CHA |
| +015+ | 2.15 | Don Schwall | 43.7 | PIT |
| +017+ | 2.05 | Jack Sanford | 88.7 | SFN |
| +019+ | 2 | Jim O'Toole | 69 | CIN |
| +021+ | 1.91 | Jim Maloney | 60.3 | CIN |
| +022+ | 1.88 | Ray Herbert | 58.3 | CHA |
| +024+ | 1.82 | Larry Jackson | 79.3 | CHN |
| +026+ | 1.8 | Ernie Broglio | 63.3 | SLN |
| +027+ | 1.79 | Joe Nuxhall | 54 | CIN |
| +028+ | 1.77 | Al Jackson | 74.7 | NYN |
| +033+ | 1.58 | Denny Lemaster | 39.7 | ATL |
| +037+ | 1.51 | Carl Willey | 48.7 | NYN |
| +040+ | 1.36 | Orlando Pena | 55 | OAK |
| +044+ | 1.31 | Joe Gibbon | 31 | PIT |
| +046+ | 1.29 | Turk Farrell | 64.7 | HOU |
| +049+ | 1.25 | Earl Wilson | 65.3 | BOS |
| XXXXX | 1.22 | Tom Cheney | 60.3 | TEX |
| XXXXX | 1.2 | Billy O'Dell | 59.7 | SFN |
| XXXXX | 1.2 | Warren Spahn | 68.3 | ATL |
| XXXXX | 1.14 | Bob Friend | 64.3 | PIT |
_