| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim O'Toole | CIN | 8.27 | 196307050_CIN_LAN |
| Bob Friend | PIT | 7.7 | 196307041_PIT_PHI |
| Larry Jackson | CHN | 4.65 | 196307050_PHI_CHN |
| Don Drysdale | LAN | 3.97 | 196307060_CIN_LAN |
| Whitey Ford | NYA | 3.34 | 196307041_CHA_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ray Sadecki | SLN | -3.52 | 196307060_SLN_SFN |
| Roger Craig | NYN | -1.82 | 196307041_NYN_CHN |
| Ike Delock | BAL | -1.67 | 196307051_MIN_BAL |
| Jack Fisher | SFN | -1.38 | 196307040_ATL_SFN |
| Don Rudolph | TEX | -1.18 | 196307050_ANA_TEX |
Based on accumulated WAA for this season up to 1963-07-06.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 5.37 | Sandy Koufax | 147.3 | LAN |
| +003+ | 5.27 | Jim O'Toole | 152 | CIN |
| +004+ | 5.15 | Bob Friend | 149.7 | PIT |
| +007+ | 4.76 | Dick Ellsworth | 140 | CHN |
| +008+ | 4.71 | Larry Jackson | 152.7 | CHN |
| +009+ | 4.59 | Juan Marichal | 155.7 | SFN |
| +015+ | 3.72 | Juan Pizarro | 130.3 | CHA |
| +016+ | 3.57 | Denny Lemaster | 121.7 | ATL |
| +018+ | 3.26 | Ray Culp | 131 | PHI |
| +024+ | 2.89 | Earl Wilson | 126.7 | BOS |
| +029+ | 2.77 | Steve Barber | 142.3 | BAL |
| +034+ | 2.62 | Don Drysdale | 171 | LAN |
| +041+ | 2.47 | John Buzhardt | 117.3 | CHA |
| +043+ | 2.46 | Don Schwall | 87.7 | PIT |
| +046+ | 2.32 | Camilo Pascual | 108.7 | MIN |
| +048+ | 2.28 | Ken McBride | 153.3 | ANA |
| +049+ | 2.25 | Jack Kralick | 105 | TOT |
| +050+ | 2.19 | Bobby Bolin | 59.3 | SFN |
| +051+ | 2.13 | Carl Willey | 111.7 | NYN |
| +056+ | 1.96 | Jim Bouton | 119.7 | NYA |
| +061+ | 1.88 | Ernie Broglio | 125.7 | SLN |
| +062+ | 1.86 | Gary Peters | 91.3 | CHA |
| +063+ | 1.84 | Jim Maloney | 128 | CIN |
| +066+ | 1.81 | Billy O'Dell | 131.3 | SFN |
| +070+ | 1.77 | Tom Cheney | 122 | TEX |
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