| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 12.48 | 196407100_LAN_HOU |
| Whitey Ford | NYA | 8.14 | 196407100_NYA_TEX |
| Juan Marichal | SFN | 5.9 | 196407100_SFN_CHN |
| Juan Pizarro | CHA | 5.3 | 196407101_CHA_ANA |
| Bob Gibson | SLN | 3.09 | 196407100_SLN_NYN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mudcat Grant | MIN | -2.7 | 196407100_MIN_OAK |
| Jack Fisher | NYN | -2.63 | 196407100_SLN_NYN |
| Bill Monbouquette | BOS | -1.78 | 196407090_BOS_DET |
| Phil Regan | DET | -1.68 | 196407101_BOS_DET |
| Buster Narum | TEX | -0.81 | 196407100_NYA_TEX |
Based on accumulated WAA for this season up to 1964-07-10.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 5.73 | Sandy Koufax | 146 | LAN |
| +003+ | 5.49 | Don Drysdale | 169 | LAN |
| +008+ | 4.64 | Jim Bunning | 134.7 | PHI |
| +009+ | 4.36 | Whitey Ford | 150 | NYA |
| +010+ | 4.31 | Chris Short | 91 | PHI |
| +012+ | 4.01 | Juan Marichal | 160.3 | SFN |
| +014+ | 3.71 | Juan Pizarro | 123.7 | CHA |
| +015+ | 3.62 | Dean Chance | 111.3 | ANA |
| +016+ | 3.59 | Bob Gibson | 132.3 | SLN |
| +018+ | 3.5 | Gary Peters | 128.7 | CHA |
| +026+ | 3.25 | Jack Kralick | 126.7 | CLE |
| +028+ | 3.22 | Joe Horlen | 93 | CHA |
| +033+ | 2.98 | Ron Herbel | 96 | SFN |
| +040+ | 2.56 | Roger Craig | 98.3 | SLN |
| +044+ | 2.31 | Gaylord Perry | 72.3 | SFN |
| +045+ | 2.31 | Jim Maloney | 123 | CIN |
| +048+ | 2.22 | Joe Gibbon | 72.7 | PIT |
| +056+ | 2.06 | Bob Bruce | 98.7 | HOU |
| +059+ | 1.99 | Bo Belinsky | 94.3 | ANA |
| +061+ | 1.91 | Robin Roberts | 115 | BAL |
| +065+ | 1.87 | Dave Wickersham | 140.3 | DET |
| +077+ | 1.65 | Sam McDowell | 71.3 | CLE |
| +081+ | 1.57 | Fred Talbot | 36 | CHA |
| +082+ | 1.56 | Joe Sparma | 23.7 | DET |
| +083+ | 1.51 | Bob Veale | 128.3 | PIT |
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