| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 10.85 | 196308290_SFN_LAN |
| Dick Ellsworth | CHN | 8.26 | 196308290_PHI_CHN |
| Gary Peters | CHA | 7.18 | 196308290_CHA_CLE |
| Bob Friend | PIT | 6.98 | 196308270_NYN_PIT |
| Warren Spahn | ATL | 2.51 | 196308270_ATL_HOU |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Duckworth | TEX | -3.09 | 196308292_MIN_TEX |
| Barry Latman | CLE | -2.62 | 196308290_CHA_CLE |
| Al Jackson | NYN | -1.77 | 196308280_NYN_PIT |
| Dave Wickersham | OAK | -1.46 | 196308280_OAK_BAL |
| Dave Morehead | BOS | -0.93 | 196308272_BOS_NYA |
Based on accumulated WAA for this season up to 1963-08-29.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 9.17 | Sandy Koufax | 256.3 | LAN |
| +003+ | 8.51 | Dick Ellsworth | 243.7 | CHN |
| +004+ | 7.81 | Gary Peters | 201.3 | CHA |
| +006+ | 7.49 | Bob Friend | 231 | PIT |
| +010+ | 6.82 | Larry Jackson | 235.7 | CHN |
| +012+ | 5.89 | Juan Marichal | 255 | SFN |
| +015+ | 5.34 | Juan Pizarro | 215 | CHA |
| +019+ | 4.93 | Jim Bouton | 204 | NYA |
| +023+ | 4.62 | Camilo Pascual | 187.7 | MIN |
| +024+ | 4.57 | Steve Barber | 221.3 | BAL |
| +027+ | 4.35 | Warren Spahn | 200.7 | ATL |
| +030+ | 4.28 | Jim O'Toole | 212.3 | CIN |
| +032+ | 4.16 | Don Drysdale | 262 | LAN |
| +035+ | 3.88 | Ken McBride | 237 | ANA |
| +043+ | 3.34 | Milt Pappas | 190.7 | BAL |
| +044+ | 3.33 | Jim Maloney | 203.3 | CIN |
| +047+ | 3.13 | Al Downing | 130.7 | NYA |
| +063+ | 2.76 | Tom Cheney | 136.7 | TEX |
| +065+ | 2.71 | Denny Lemaster | 193.3 | ATL |
| +066+ | 2.64 | Joe Nuxhall | 164.3 | CIN |
| +071+ | 2.51 | Curt Simmons | 183.3 | SLN |
| +073+ | 2.49 | Billy O'Dell | 181.7 | SFN |
| +076+ | 2.42 | Lee Stange | 117 | MIN |
| +078+ | 2.33 | Carl Willey | 142 | NYN |
| +081+ | 2.28 | Cal McLish | 190.7 | PHI |
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