| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 11.25 | 196407180_CHN_LAN |
| Whitey Ford | NYA | 9.73 | 196407192_CLE_NYA |
| Dean Chance | ANA | 5.6 | 196407192_ANA_MIN |
| Juan Pizarro | CHA | 4.91 | 196407191_OAK_CHA |
| Juan Marichal | SFN | 4.81 | 196407191_HOU_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dave Morehead | BOS | -2.11 | 196407191_TEX_BOS |
| Glen Hobbie | SLN | -2.05 | 196407180_NYN_SLN |
| Phil Regan | DET | -1.68 | 196407200_DET_BOS |
| Frank Lary | NYN | -1.49 | 196407192_NYN_SLN |
| Mudcat Grant | MIN | -1.46 | 196407192_ANA_MIN |
Based on accumulated WAA for this season up to 1964-07-20.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 6.22 | Sandy Koufax | 162.7 | LAN |
| +003+ | 5.92 | Dean Chance | 138.3 | ANA |
| +004+ | 5.44 | Jim Bunning | 157 | PHI |
| +005+ | 5.27 | Don Drysdale | 184.3 | LAN |
| +010+ | 4.83 | Whitey Ford | 164 | NYA |
| +012+ | 4.67 | Juan Pizarro | 141.7 | CHA |
| +016+ | 3.94 | Juan Marichal | 174.7 | SFN |
| +017+ | 3.92 | Chris Short | 102.3 | PHI |
| +025+ | 3.53 | Gary Peters | 143 | CHA |
| +030+ | 3.27 | Joe Horlen | 93 | CHA |
| +032+ | 3.02 | Ron Herbel | 107.7 | SFN |
| +035+ | 2.94 | Dick Ellsworth | 167.7 | CHN |
| +036+ | 2.94 | Jack Kralick | 130.7 | CLE |
| +039+ | 2.86 | Robin Roberts | 130 | BAL |
| +046+ | 2.52 | Bob Gibson | 149 | SLN |
| +051+ | 2.38 | Roger Craig | 110.7 | SLN |
| +052+ | 2.37 | Gaylord Perry | 82 | SFN |
| +056+ | 2.26 | Jim O'Toole | 114 | CIN |
| +057+ | 2.25 | Fred Newman | 97 | ANA |
| +058+ | 2.23 | Bob Bruce | 109.3 | HOU |
| +059+ | 2.2 | Hank Fischer | 108.7 | ATL |
| +062+ | 2.07 | Bobby Bolin | 98.7 | SFN |
| +070+ | 1.94 | Bob Veale | 145.3 | PIT |
| +071+ | 1.93 | Jim Maloney | 135 | CIN |
| +078+ | 1.81 | Turk Farrell | 138.7 | HOU |
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