| Starter | Tm | Tier | Game |
|---|---|---|---|
| Don Drysdale | LAN | 11.59 | 196408010_LAN_PHI |
| Dean Chance | ANA | 7.34 | 196408010_BOS_ANA |
| Juan Pizarro | CHA | 4.16 | 196407310_CHA_TEX |
| Jim Bunning | PHI | 4.03 | 196408010_LAN_PHI |
| Jim Bouton | NYA | 2.74 | 196408020_NYA_MIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Frank Lary | NYN | -2.36 | 196407311_HOU_NYN |
| Dave Morehead | BOS | -2.06 | 196408020_BOS_ANA |
| Lee Stange | CLE | -1.78 | 196408010_DET_CLE |
| Bennie Daniels | TEX | -1.51 | 196407310_CHA_TEX |
| Orlando Pena | OAK | -1.47 | 196408010_BAL_OAK |
Based on accumulated WAA for this season up to 1964-08-02.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.59 | Sandy Koufax | 187.7 | LAN |
| +002+ | 7.41 | Dean Chance | 165.3 | ANA |
| +006+ | 5.7 | Don Drysdale | 205.3 | LAN |
| +008+ | 5.23 | Jim Bunning | 169.3 | PHI |
| +009+ | 5.18 | Juan Pizarro | 155.7 | CHA |
| +015+ | 4.89 | Chris Short | 118.7 | PHI |
| +016+ | 4.78 | Whitey Ford | 166 | NYA |
| +019+ | 4.62 | Juan Marichal | 193.7 | SFN |
| +020+ | 4.47 | Gary Peters | 169.7 | CHA |
| +025+ | 3.84 | Jim Bouton | 180.3 | NYA |
| +030+ | 3.73 | Joe Horlen | 113.7 | CHA |
| +032+ | 3.67 | Bob Bruce | 134.3 | HOU |
| +035+ | 3.4 | Jim O'Toole | 129 | CIN |
| +040+ | 3.12 | Dick Ellsworth | 181 | CHN |
| +043+ | 2.96 | Fred Newman | 120 | ANA |
| +048+ | 2.88 | Bob Veale | 170 | PIT |
| +047+ | 2.88 | Jack Kralick | 141.7 | CLE |
| +053+ | 2.67 | Ron Herbel | 120 | SFN |
| +055+ | 2.65 | Wally Bunker | 126.3 | BAL |
| +059+ | 2.44 | Bo Belinsky | 121.3 | ANA |
| +062+ | 2.39 | Bobby Bolin | 106.7 | SFN |
| +072+ | 2.06 | John Buzhardt | 116.3 | CHA |
| +076+ | 2 | Robin Roberts | 146 | BAL |
| +077+ | 1.98 | Gaylord Perry | 96.7 | SFN |
| +081+ | 1.89 | Bob Miller | 93.7 | LAN |
_