| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 12.06 | 196306290_ATL_LAN |
| Jim O'Toole | CIN | 8.68 | 196306300_CIN_SFN |
| Bob Friend | PIT | 6.99 | 196306300_NYN_PIT |
| Larry Jackson | CHN | 5.04 | 196306300_CHN_PHI |
| Juan Pizarro | CHA | 4.32 | 196306301_CLE_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ray Sadecki | SLN | -4.25 | 196307010_SLN_HOU |
| Don Cardwell | PIT | -1.59 | 196307011_PIT_PHI |
| Art Mahaffey | PHI | -1.2 | 196306300_CHN_PHI |
| Diego Segui | OAK | -0.75 | 196306302_OAK_BAL |
| Tracy Stallard | NYN | -0.62 | 196306300_NYN_PIT |
Based on accumulated WAA for this season up to 1963-07-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 4.89 | Jim O'Toole | 144 | CIN |
| +004+ | 4.73 | Sandy Koufax | 138.3 | LAN |
| +005+ | 4.67 | Bob Friend | 140 | PIT |
| +007+ | 4.57 | Dick Ellsworth | 131 | CHN |
| +009+ | 4.45 | Larry Jackson | 145.3 | CHN |
| +013+ | 3.54 | Juan Marichal | 139.7 | SFN |
| +014+ | 3.51 | Denny Lemaster | 108.7 | ATL |
| +016+ | 3.47 | Juan Pizarro | 124.3 | CHA |
| +021+ | 2.97 | Ray Culp | 123.3 | PHI |
| +022+ | 2.92 | Earl Wilson | 117.7 | BOS |
| +024+ | 2.87 | John Buzhardt | 111.7 | CHA |
| +027+ | 2.78 | Ernie Broglio | 120.7 | SLN |
| +028+ | 2.75 | Steve Barber | 138.3 | BAL |
| +039+ | 2.34 | Camilo Pascual | 108.7 | MIN |
| +038+ | 2.34 | Jack Kralick | 105 | TOT |
| +041+ | 2.25 | Bobby Bolin | 53.7 | SFN |
| +043+ | 2.23 | Carl Willey | 104.7 | NYN |
| +045+ | 2.15 | Don Schwall | 80.7 | PIT |
| +047+ | 2.14 | Joe Nuxhall | 90 | CIN |
| +046+ | 2.14 | Billy O'Dell | 125 | SFN |
| +052+ | 2.06 | Ken McBride | 145 | ANA |
| +057+ | 1.96 | Jim Bouton | 113.7 | NYA |
| +059+ | 1.91 | Gary Peters | 81.3 | CHA |
| +060+ | 1.89 | Joe Gibbon | 62 | PIT |
| +068+ | 1.78 | Don Drysdale | 154 | LAN |
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