| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 10.81 | 196306250_LAN_CIN |
| Jim O'Toole | CIN | 9.2 | 196306250_LAN_CIN |
| Bob Friend | PIT | 6.99 | 196306260_PHI_PIT |
| Larry Jackson | CHN | 3.89 | 196306250_CHN_NYN |
| Whitey Ford | NYA | 3.76 | 196306260_NYA_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jay Hook | NYN | -11.12 | 196306250_CHN_NYN |
| Ray Sadecki | SLN | -4.01 | 196306250_SFN_SLN |
| Sam McDowell | CLE | -2.03 | 196306252_CLE_BOS |
| Ike Delock | BAL | -1.44 | 196306261_BAL_ANA |
| Paul Foytack | ANA | -1.32 | 196306261_BAL_ANA |
Based on accumulated WAA for this season up to 1963-06-27.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.48 | Sandy Koufax | 133.7 | LAN |
| +004+ | 4.62 | Jim O'Toole | 138 | CIN |
| +005+ | 4.58 | Larry Jackson | 138.3 | CHN |
| +008+ | 4.37 | Dick Ellsworth | 120 | CHN |
| +009+ | 4.05 | Bob Friend | 132 | PIT |
| +010+ | 3.94 | Juan Pizarro | 116.7 | CHA |
| +012+ | 3.81 | Denny Lemaster | 101.3 | ATL |
| +017+ | 3.05 | John Buzhardt | 105.7 | CHA |
| +018+ | 2.96 | Juan Marichal | 132 | SFN |
| +023+ | 2.72 | Ray Culp | 114.3 | PHI |
| +026+ | 2.7 | Earl Wilson | 112.7 | BOS |
| +027+ | 2.7 | Jim Bouton | 109.3 | NYA |
| +032+ | 2.47 | Ernie Broglio | 113.7 | SLN |
| +033+ | 2.46 | Billy O'Dell | 118 | SFN |
| +036+ | 2.4 | Steve Barber | 129.3 | BAL |
| +040+ | 2.3 | Jack Kralick | 99 | TOT |
| +041+ | 2.27 | Ken McBride | 139.7 | ANA |
| +042+ | 2.26 | Bobby Bolin | 53.7 | SFN |
| +045+ | 2.19 | Carl Willey | 99 | NYN |
| +046+ | 2.17 | Don Schwall | 80.7 | PIT |
| +047+ | 2.13 | Camilo Pascual | 105.7 | MIN |
| +048+ | 2.09 | Al McBean | 69.3 | PIT |
| +051+ | 1.99 | Tom Cheney | 107.7 | TEX |
| +057+ | 1.84 | Jack Sanford | 133.7 | SFN |
| +061+ | 1.81 | Bob Buhl | 127.3 | CHN |
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