| 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 1963-06-26.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.44 | Sandy Koufax | 133.7 | LAN |
| +005+ | 4.59 | Jim O'Toole | 138 | CIN |
| +006+ | 4.54 | Larry Jackson | 138.3 | CHN |
| +008+ | 4.34 | Dick Ellsworth | 120 | CHN |
| +009+ | 4.02 | Bob Friend | 132 | PIT |
| +010+ | 3.91 | Juan Pizarro | 116.7 | CHA |
| +011+ | 3.78 | Denny Lemaster | 101.3 | ATL |
| +014+ | 3.51 | Jim Bouton | 104.3 | NYA |
| +018+ | 3.02 | John Buzhardt | 105.7 | CHA |
| +019+ | 2.93 | Juan Marichal | 132 | SFN |
| +025+ | 2.67 | Earl Wilson | 112.7 | BOS |
| +030+ | 2.54 | Ray Culp | 107.3 | PHI |
| +033+ | 2.44 | Ernie Broglio | 113.7 | SLN |
| +035+ | 2.42 | Billy O'Dell | 118 | SFN |
| +037+ | 2.36 | Steve Barber | 129.3 | BAL |
| +039+ | 2.27 | Jack Kralick | 99 | TOT |
| +040+ | 2.25 | Bobby Bolin | 53.7 | SFN |
| +042+ | 2.23 | Ken McBride | 139.7 | ANA |
| +043+ | 2.16 | Carl Willey | 99 | NYN |
| +044+ | 2.15 | Don Schwall | 80.7 | PIT |
| +046+ | 2.1 | Camilo Pascual | 105.7 | MIN |
| +048+ | 2.07 | Al McBean | 69.3 | PIT |
| +053+ | 1.96 | Tom Cheney | 107.7 | TEX |
| +058+ | 1.8 | Jack Sanford | 133.7 | SFN |
| +062+ | 1.78 | Bob Buhl | 127.3 | CHN |
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