| Starter | Tm | Tier | Game |
|---|---|---|---|
| Whitey Ford | NYA | 5.01 | 196305310_NYA_CLE |
| Warren Spahn | ATL | 4.51 | 196305300_LAN_ATL |
| Don Drysdale | LAN | 2.97 | 196305300_LAN_ATL |
| Curt Simmons | SLN | 2.48 | 196305310_SFN_SLN |
| Steve Barber | BAL | 2.47 | 196305300_BAL_OAK |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jay Hook | NYN | -9.52 | 196305302_CHN_NYN |
| Ray Sadecki | SLN | -3.75 | 196305300_HOU_SLN |
| Gene Conley | BOS | -2.79 | 196305310_BOS_CHA |
| Glen Hobbie | CHN | -1.59 | 196305302_CHN_NYN |
| Bob Turley | ANA | -1.36 | 196305300_DET_ANA |
Based on accumulated WAA for this season up to 1963-05-31.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 3.88 | Dick Ellsworth | 73.7 | CHN |
| +004+ | 3.43 | Sandy Koufax | 77.3 | LAN |
| +005+ | 3.28 | Larry Jackson | 97.3 | CHN |
| +007+ | 2.99 | Don Schwall | 59 | PIT |
| +014+ | 2.61 | Denny Lemaster | 55.7 | ATL |
| +017+ | 2.15 | Jim O'Toole | 86 | CIN |
| +021+ | 2.02 | Bob Buhl | 84.3 | CHN |
| +022+ | 2 | Steve Barber | 96.3 | BAL |
| +023+ | 2 | Jack Sanford | 97.7 | SFN |
| +024+ | 1.98 | Carl Willey | 64.3 | NYN |
| +030+ | 1.77 | Milt Pappas | 55 | BAL |
| +031+ | 1.75 | Robin Roberts | 75.3 | BAL |
| +034+ | 1.74 | Tom Cheney | 75.7 | TEX |
| +036+ | 1.67 | Jim Bouton | 59 | NYA |
| +038+ | 1.63 | Bob Friend | 78 | PIT |
| +039+ | 1.57 | Joe Nuxhall | 69 | CIN |
| +043+ | 1.49 | Curt Simmons | 75.3 | SLN |
| +041+ | 1.49 | Ernie Broglio | 78 | SLN |
| +042+ | 1.49 | John Buzhardt | 68.3 | CHA |
| +053+ | 1.3 | Jim Maloney | 73.3 | CIN |
| +054+ | 1.3 | Juan Pizarro | 63.3 | CHA |
| XXXXX | 1.22 | Joe Gibbon | 42.7 | PIT |
| XXXXX | 1.18 | Dallas Green | 27 | PHI |
| XXXXX | 1.13 | Ron Taylor | 34.7 | SLN |
| XXXXX | 1.11 | Billy O'Dell | 73.7 | SFN |
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