| Starter | Tm | Tier | Game |
|---|---|---|---|
| Don Drysdale | LAN | 10.67 | 196407030_NYN_LAN |
| Whitey Ford | NYA | 9.14 | 196407050_MIN_NYA |
| Juan Marichal | SFN | 5.8 | 196407050_PHI_SFN |
| Dean Chance | ANA | 4.24 | 196407050_ANA_BOS |
| Juan Pizarro | CHA | 4.09 | 196407051_CLE_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Moe Drabowsky | OAK | -2.93 | 196407040_OAK_BAL |
| Mudcat Grant | MIN | -2.91 | 196407050_MIN_NYA |
| Tracy Stallard | NYN | -2.34 | 196407040_NYN_LAN |
| Phil Regan | DET | -2.02 | 196407032_TEX_DET |
| Bennie Daniels | TEX | -1.96 | 196407031_TEX_DET |
Based on accumulated WAA for this season up to 1964-07-05.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 5.68 | Sandy Koufax | 140.7 | LAN |
| +004+ | 5.36 | Don Drysdale | 162.7 | LAN |
| +007+ | 4.62 | Jim Bunning | 134.7 | PHI |
| +009+ | 4.3 | Chris Short | 91 | PHI |
| +010+ | 4.08 | Whitey Ford | 144.3 | NYA |
| +011+ | 3.87 | Juan Pizarro | 116 | CHA |
| +014+ | 3.82 | Juan Marichal | 151.3 | SFN |
| +015+ | 3.6 | Dean Chance | 111.3 | ANA |
| +021+ | 3.21 | Gary Peters | 120.7 | CHA |
| +026+ | 3.02 | Jim Maloney | 117 | CIN |
| +027+ | 3.01 | Bob Gibson | 123.3 | SLN |
| +030+ | 2.77 | Ron Herbel | 89 | SFN |
| +038+ | 2.55 | Roger Craig | 98.3 | SLN |
| +041+ | 2.49 | Jack Kralick | 117.7 | CLE |
| +042+ | 2.44 | Joe Horlen | 84 | CHA |
| +043+ | 2.33 | Gaylord Perry | 65.3 | SFN |
| +049+ | 2.21 | Joe Gibbon | 72.7 | PIT |
| +053+ | 2.04 | Bob Bruce | 98.7 | HOU |
| +055+ | 2 | Vern Law | 104.7 | PIT |
| +062+ | 1.9 | Dick Ellsworth | 147.7 | CHN |
| +063+ | 1.89 | Tony Cloninger | 108.3 | ATL |
| +064+ | 1.87 | Robin Roberts | 115 | BAL |
| +068+ | 1.76 | Dave Wickersham | 131.7 | DET |
| +073+ | 1.66 | Ken Johnson | 119 | HOU |
| +082+ | 1.56 | Fred Talbot | 36 | CHA |
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