| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim O'Toole | CIN | 4.66 | 196305160_CIN_CHN |
| Dick Donovan | CLE | 3.5 | 196305160_CHA_CLE |
| Steve Barber | BAL | 2.59 | 196305180_CHA_BAL |
| Don Drysdale | LAN | 2.42 | 196305180_PIT_LAN |
| Joe Gibbon | PIT | 2.07 | 196305170_PIT_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jay Hook | NYN | -8.83 | 196305160_NYN_SFN |
| Ray Sadecki | SLN | -3.38 | 196305180_CIN_SLN |
| Jack Hamilton | PHI | -1.64 | 196305170_PHI_HOU |
| Ted Bowsfield | OAK | -1.14 | 196305170_OAK_BOS |
| Bob Bruce | HOU | -0.99 | 196305180_PHI_HOU |
Based on accumulated WAA for this season up to 1963-05-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 3.01 | Sandy Koufax | 59 | LAN |
| +003+ | 2.96 | Dick Ellsworth | 49.7 | CHN |
| +004+ | 2.79 | Steve Barber | 81.3 | BAL |
| +008+ | 2.31 | Carl Willey | 46 | NYN |
| +009+ | 2.27 | Joe Nuxhall | 45 | CIN |
| +010+ | 2.24 | Juan Pizarro | 50.3 | CHA |
| +012+ | 2.22 | Curt Simmons | 56 | SLN |
| +014+ | 2.07 | Larry Jackson | 72.3 | CHN |
| +015+ | 2.02 | Don Schwall | 40 | PIT |
| +017+ | 1.97 | Earl Wilson | 59.3 | BOS |
| +018+ | 1.96 | Dave Morehead | 40.7 | BOS |
| +019+ | 1.95 | Jim O'Toole | 69 | CIN |
| +021+ | 1.89 | Orlando Pena | 52 | OAK |
| +024+ | 1.77 | Ray Herbert | 49.7 | CHA |
| +025+ | 1.76 | Ernie Broglio | 63.3 | SLN |
| +027+ | 1.7 | Milt Pappas | 36.7 | BAL |
| +029+ | 1.68 | Jack Sanford | 79.7 | SFN |
| +032+ | 1.58 | Johnny Klippstein | 35.3 | PHI |
| +035+ | 1.54 | Denny Lemaster | 39.7 | ATL |
| +036+ | 1.53 | Bob Buhl | 65.7 | CHN |
| +037+ | 1.51 | Dick Stigman | 49 | MIN |
| +039+ | 1.45 | Tom Cheney | 53.3 | TEX |
| +043+ | 1.32 | Dallas Green | 21.7 | PHI |
| +045+ | 1.29 | Jim Bouton | 44.3 | NYA |
| +046+ | 1.28 | Joe Gibbon | 31 | PIT |
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