| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 13.15 | 196307200_LAN_ATL |
| Jim O'Toole | CIN | 6.98 | 196307210_SFN_CIN |
| Juan Pizarro | CHA | 3.86 | 196307210_BOS_CHA |
| Whitey Ford | NYA | 3.09 | 196307200_CLE_NYA |
| Denny Lemaster | ATL | 1.81 | 196307200_LAN_ATL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Barry Latman | CLE | -1.87 | 196307212_CLE_NYA |
| Tracy Stallard | NYN | -1.09 | 196307212_NYN_PHI |
| Dave Wickersham | OAK | -0.97 | 196307200_BAL_OAK |
| Chris Short | PHI | -0.68 | 196307211_NYN_PHI |
| Hank Fischer | ATL | -0.66 | 196307212_LAN_ATL |
Based on accumulated WAA for this season up to 1963-07-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.21 | Sandy Koufax | 179.7 | LAN |
| +003+ | 6.12 | Dick Ellsworth | 170.7 | CHN |
| +004+ | 6 | Bob Friend | 174 | PIT |
| +006+ | 5.35 | Juan Marichal | 180.3 | SFN |
| +008+ | 5.16 | Larry Jackson | 166.7 | CHN |
| +009+ | 5.13 | Jim O'Toole | 172 | CIN |
| +012+ | 4.63 | Juan Pizarro | 151 | CHA |
| +020+ | 3.43 | Gary Peters | 118 | CHA |
| +024+ | 3.31 | Ken McBride | 178.7 | ANA |
| +029+ | 3.1 | Jim Bouton | 142.7 | NYA |
| +033+ | 3.03 | Denny Lemaster | 141 | ATL |
| +035+ | 2.95 | Joe Nuxhall | 120 | CIN |
| +037+ | 2.94 | Don Drysdale | 191.7 | LAN |
| +036+ | 2.94 | John Buzhardt | 122.3 | CHA |
| +044+ | 2.65 | Steve Barber | 151 | BAL |
| +045+ | 2.64 | Don Schwall | 107 | PIT |
| +048+ | 2.54 | Warren Spahn | 148 | ATL |
| +052+ | 2.44 | Dallas Green | 75.7 | PHI |
| +053+ | 2.38 | Tom Cheney | 127.7 | TEX |
| +055+ | 2.38 | Camilo Pascual | 114 | MIN |
| +060+ | 2.26 | Bob Buhl | 154 | CHN |
| +059+ | 2.26 | Bobby Bolin | 74.7 | SFN |
| +068+ | 2.09 | Cal McLish | 143 | PHI |
| +071+ | 2.02 | Milt Pappas | 130.3 | BAL |
| +073+ | 1.98 | Carl Willey | 125.7 | NYN |
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