| Starter | Tm | Tier | Game |
|---|---|---|---|
| Warren Spahn | ATL | 7.65 | 196305090_SFN_ATL |
| Sandy Koufax | LAN | 4.92 | 196305070_LAN_SLN |
| Ralph Terry | NYA | 3.67 | 196305090_NYA_CHA |
| Bob Purkey | CIN | 2.42 | 196305070_HOU_CIN |
| Jim Bunning | DET | 2.17 | 196305080_NYA_DET |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jay Hook | NYN | -8.06 | 196305080_PHI_NYN |
| Cal McLish | PHI | -2.24 | 196305090_PHI_NYN |
| Bob Turley | ANA | -1.97 | 196305070_MIN_ANA |
| Jim Perry | MIN | -1.71 | 196305070_MIN_ANA |
| Don Cardwell | PIT | -1.39 | 196305070_PIT_CHN |
Based on accumulated WAA for this season up to 1963-05-09.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 2.53 | Dick Ellsworth | 41.7 | CHN |
| +006+ | 2.11 | Tom Cheney | 40 | TEX |
| +008+ | 1.96 | Curt Simmons | 42 | SLN |
| +009+ | 1.83 | Joe Nuxhall | 37 | CIN |
| +010+ | 1.8 | Sandy Koufax | 37.7 | LAN |
| +011+ | 1.79 | Bob Buhl | 50.7 | CHN |
| +012+ | 1.76 | Ray Washburn | 47.3 | SLN |
| +016+ | 1.63 | Steve Barber | 63.7 | BAL |
| +018+ | 1.56 | Jim O'Toole | 54 | CIN |
| +019+ | 1.55 | Don Schwall | 31.3 | PIT |
| +020+ | 1.52 | Juan Marichal | 51 | SFN |
| +021+ | 1.5 | Joe Gibbon | 18 | PIT |
| +022+ | 1.44 | Billy O'Dell | 44.7 | SFN |
| +023+ | 1.41 | Orlando Pena | 38 | OAK |
| +024+ | 1.37 | Juan Pizarro | 33.7 | CHA |
| +030+ | 1.31 | Dave Morehead | 23.7 | BOS |
| XXXXX | 1.22 | Al Jackson | 47.3 | NYN |
| XXXXX | 1.2 | Milt Pappas | 25 | BAL |
| XXXXX | 1.19 | Jim Maloney | 47 | CIN |
| XXXXX | 1.11 | Jack Sanford | 56.3 | SFN |
| XXXXX | 1.09 | Dick Stigman | 41 | MIN |
| XXXXX | 1.08 | Ray Herbert | 40.7 | CHA |
| XXXXX | 1.05 | Bob Miller | 44 | LAN |
| XXXXX | 0.99 | Larry Jackson | 56.3 | CHN |
| XXXXX | 0.99 | Earl Wilson | 40.3 | BOS |
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