| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim O'Toole | CIN | 6.61 | 196305280_SFN_CIN |
| Sandy Koufax | LAN | 6.51 | 196305280_LAN_ATL |
| Ralph Terry | NYA | 4.73 | 196305300_NYA_BOS |
| Warren Spahn | ATL | 4.51 | 196305300_LAN_ATL |
| Bob Friend | PIT | 3.87 | 196305280_PHI_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jay Hook | NYN | -9.52 | 196305302_CHN_NYN |
| Ray Sadecki | SLN | -3.75 | 196305300_HOU_SLN |
| Glen Hobbie | CHN | -1.59 | 196305302_CHN_NYN |
| Jack Fisher | SFN | -1.4 | 196305280_SFN_CIN |
| Bob Turley | ANA | -1.36 | 196305300_DET_ANA |
Based on accumulated WAA for this season up to 1963-05-30.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.91 | Dick Ellsworth | 73.7 | CHN |
| +003+ | 3.44 | Sandy Koufax | 77.3 | LAN |
| +005+ | 3.32 | Larry Jackson | 97.3 | CHN |
| +013+ | 2.63 | Denny Lemaster | 55.7 | ATL |
| +015+ | 2.27 | Don Schwall | 50 | PIT |
| +016+ | 2.27 | Milt Pappas | 50.7 | BAL |
| +018+ | 2.19 | Jim O'Toole | 86 | CIN |
| +019+ | 2.17 | Jack Sanford | 91.7 | SFN |
| +022+ | 2.02 | Steve Barber | 96.3 | BAL |
| +024+ | 1.95 | Curt Simmons | 70.3 | SLN |
| +029+ | 1.85 | Carl Willey | 57.3 | NYN |
| +031+ | 1.77 | Robin Roberts | 75.3 | BAL |
| +033+ | 1.75 | Tom Cheney | 75.7 | TEX |
| +034+ | 1.7 | Jim Bouton | 59 | NYA |
| +036+ | 1.67 | Jim Maloney | 67.3 | CIN |
| +038+ | 1.66 | Bob Buhl | 77 | CHN |
| +037+ | 1.66 | Bob Friend | 78 | PIT |
| +041+ | 1.6 | Joe Nuxhall | 69 | CIN |
| +043+ | 1.52 | Ernie Broglio | 78 | SLN |
| +054+ | 1.32 | Juan Pizarro | 63.3 | CHA |
| XXXXX | 1.24 | Joe Gibbon | 42.7 | PIT |
| XXXXX | 1.14 | Ron Taylor | 34.7 | SLN |
| XXXXX | 1.14 | Dallas Green | 26.3 | PHI |
| XXXXX | 1.13 | Billy O'Dell | 73.7 | SFN |
| XXXXX | 1.1 | Cal McLish | 66.3 | PHI |
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