| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 12.06 | 196306290_ATL_LAN |
| Denny Lemaster | ATL | 3.04 | 196306290_ATL_LAN |
| Juan Marichal | SFN | 2.62 | 196306280_CIN_SFN |
| Jim Bouton | NYA | 2.47 | 196306270_NYA_CHA |
| Ernie Broglio | SLN | 2.41 | 196306290_SLN_HOU |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Craig | NYN | -2.19 | 196306280_NYN_PIT |
| Bennie Daniels | TEX | -1.27 | 196306270_TEX_OAK |
| Don Cardwell | PIT | -0.64 | 196306270_PHI_PIT |
| Ryne Duren | PHI | -0.56 | 196306280_CHN_PHI |
| Barry Latman | CLE | -0.41 | 196306270_CLE_BOS |
Based on accumulated WAA for this season up to 1963-06-29.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 4.77 | Sandy Koufax | 138.3 | LAN |
| +005+ | 4.64 | Jim O'Toole | 138 | CIN |
| +006+ | 4.6 | Dick Ellsworth | 131 | CHN |
| +007+ | 4.55 | Larry Jackson | 138.3 | CHN |
| +009+ | 4.05 | Bob Friend | 132 | PIT |
| +011+ | 3.94 | Juan Pizarro | 116.7 | CHA |
| +014+ | 3.59 | Juan Marichal | 139.7 | SFN |
| +015+ | 3.54 | Denny Lemaster | 108.7 | ATL |
| +021+ | 2.93 | Steve Barber | 138.3 | BAL |
| +022+ | 2.91 | John Buzhardt | 111.7 | CHA |
| +024+ | 2.83 | Ernie Broglio | 120.7 | SLN |
| +027+ | 2.72 | Earl Wilson | 112.7 | BOS |
| +028+ | 2.7 | Jim Bouton | 109.3 | NYA |
| +029+ | 2.7 | Ray Culp | 114.3 | PHI |
| +038+ | 2.46 | Billy O'Dell | 118 | SFN |
| +040+ | 2.36 | Jack Kralick | 105 | TOT |
| +042+ | 2.29 | Ken McBride | 139.7 | ANA |
| +043+ | 2.26 | Bobby Bolin | 53.7 | SFN |
| +044+ | 2.25 | Carl Willey | 104.7 | NYN |
| +047+ | 2.17 | Don Schwall | 80.7 | PIT |
| +049+ | 2.16 | Joe Nuxhall | 90 | CIN |
| +051+ | 2.13 | Camilo Pascual | 105.7 | MIN |
| +057+ | 1.91 | Joe Gibbon | 62 | PIT |
| +064+ | 1.83 | Don Drysdale | 154 | LAN |
| +067+ | 1.78 | Bob Buhl | 127.3 | CHN |
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