| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim O'Toole | CIN | 5.48 | 196306080_CIN_PHI |
| Ralph Terry | NYA | 3.89 | 196306080_NYA_DET |
| Don Drysdale | LAN | 2.51 | 196306070_LAN_CHN |
| Steve Barber | BAL | 2.44 | 196306080_BOS_BAL |
| Camilo Pascual | MIN | 2.42 | 196306080_MIN_ANA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Gene Conley | BOS | -3.41 | 196306060_BOS_TEX |
| Roger Craig | NYN | -2.33 | 196306080_SLN_NYN |
| Ted Bowsfield | OAK | -1.82 | 196306080_CHA_OAK |
| Bennie Daniels | TEX | -1.16 | 196306080_CLE_TEX |
| Chris Short | PHI | -0.83 | 196306060_SLN_PHI |
Based on accumulated WAA for this season up to 1963-06-08.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 4.27 | Sandy Koufax | 93.3 | LAN |
| +004+ | 4.06 | Dick Ellsworth | 89.7 | CHN |
| +007+ | 3.43 | Larry Jackson | 105.3 | CHN |
| +008+ | 3.28 | Denny Lemaster | 68.3 | ATL |
| +009+ | 3.14 | Jim O'Toole | 103.7 | CIN |
| +017+ | 2.53 | Bob Buhl | 99.3 | CHN |
| +018+ | 2.5 | Juan Pizarro | 81.3 | CHA |
| +021+ | 2.39 | Tom Cheney | 84.7 | TEX |
| +023+ | 2.31 | Steve Barber | 111 | BAL |
| +024+ | 2.3 | Bob Friend | 95 | PIT |
| +027+ | 2.18 | John Buzhardt | 77.3 | CHA |
| +029+ | 2.05 | Don Schwall | 63.7 | PIT |
| +031+ | 1.97 | Carl Willey | 73 | NYN |
| +032+ | 1.96 | Ernie Broglio | 92 | SLN |
| +035+ | 1.84 | Jim Bouton | 71 | NYA |
| +037+ | 1.77 | Camilo Pascual | 100.7 | MIN |
| +039+ | 1.72 | Jack Sanford | 104.7 | SFN |
| +040+ | 1.71 | Milt Pappas | 62.3 | BAL |
| +048+ | 1.5 | Don Drysdale | 116.7 | LAN |
| +052+ | 1.49 | Ray Culp | 77.3 | PHI |
| +055+ | 1.41 | Curt Simmons | 80 | SLN |
| +058+ | 1.38 | Robin Roberts | 86.7 | BAL |
| +062+ | 1.35 | Bobby Bolin | 32.3 | SFN |
| +063+ | 1.34 | Turk Farrell | 82.7 | HOU |
| +064+ | 1.32 | Dallas Green | 29 | PHI |
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