| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim O'Toole | CIN | 6.55 | 196306120_PIT_CIN |
| Don Drysdale | LAN | 3.39 | 196306110_SFN_LAN |
| Camilo Pascual | MIN | 3.37 | 196306122_OAK_MIN |
| Juan Pizarro | CHA | 2.77 | 196306122_ANA_CHA |
| Ralph Terry | NYA | 2.58 | 196306120_BAL_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Galen Cisco | NYN | -3.34 | 196306120_NYN_ATL |
| Glen Hobbie | CHN | -1.48 | 196306100_CHN_HOU |
| Bob Turley | ANA | -1.21 | 196306122_ANA_CHA |
| Lew Burdette | ATL | -1.17 | 196306120_NYN_ATL |
| Don Rudolph | TEX | -1.06 | 196306101_NYA_TEX |
Based on accumulated WAA for this season up to 1963-06-12.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 3.95 | Jim O'Toole | 112.7 | CIN |
| +006+ | 3.75 | Larry Jackson | 113.3 | CHN |
| +008+ | 3.55 | Dick Ellsworth | 95.3 | CHN |
| +009+ | 3.46 | Sandy Koufax | 98 | LAN |
| +010+ | 3.12 | Bob Friend | 104 | PIT |
| +011+ | 3.08 | Denny Lemaster | 75 | ATL |
| +018+ | 2.76 | John Buzhardt | 86.3 | CHA |
| +021+ | 2.55 | Bob Buhl | 106.3 | CHN |
| +023+ | 2.53 | Juan Pizarro | 91.3 | CHA |
| +027+ | 2.29 | Steve Barber | 111 | BAL |
| +028+ | 2.26 | Camilo Pascual | 105.7 | MIN |
| +029+ | 2.25 | Jim Bouton | 78 | NYA |
| +032+ | 2.18 | Jack Sanford | 111.7 | SFN |
| +034+ | 2.04 | Ernie Broglio | 92 | SLN |
| +036+ | 2.02 | Don Schwall | 70.3 | PIT |
| +039+ | 1.97 | Carl Willey | 80 | NYN |
| +040+ | 1.95 | Tom Cheney | 88.7 | TEX |
| +041+ | 1.94 | Juan Marichal | 108.7 | SFN |
| +042+ | 1.92 | Milt Pappas | 67.7 | BAL |
| +043+ | 1.87 | Bobby Bolin | 41 | SFN |
| +049+ | 1.62 | Ray Culp | 83.3 | PHI |
| +050+ | 1.61 | Turk Farrell | 85.3 | HOU |
| +053+ | 1.61 | Don Drysdale | 124.7 | LAN |
| +055+ | 1.56 | Ken McBride | 108.7 | ANA |
| +059+ | 1.48 | Whitey Ford | 89 | NYA |
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