| Starter | Tm | Tier | Game |
|---|---|---|---|
| Don Drysdale | LAN | 10.67 | 196407030_NYN_LAN |
| Whitey Ford | NYA | 9.94 | 196407010_OAK_NYA |
| Juan Marichal | SFN | 4.87 | 196407010_PIT_SFN |
| Dean Chance | ANA | 4.44 | 196407010_ANA_BAL |
| Chris Short | PHI | 4.27 | 196407020_PHI_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mudcat Grant | MIN | -3.22 | 196407010_MIN_BOS |
| Jack Fisher | NYN | -2.17 | 196407030_NYN_LAN |
| Phil Regan | DET | -2.02 | 196407032_TEX_DET |
| Bennie Daniels | TEX | -1.96 | 196407031_TEX_DET |
| Bill Monbouquette | BOS | -1.75 | 196407030_ANA_BOS |
Based on accumulated WAA for this season up to 1964-07-03.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 5.39 | Don Drysdale | 162.7 | LAN |
| +005+ | 4.99 | Sandy Koufax | 131.7 | LAN |
| +006+ | 4.62 | Whitey Ford | 140.3 | NYA |
| +007+ | 4.35 | Chris Short | 91 | PHI |
| +009+ | 4.27 | Jim Bunning | 124.7 | PHI |
| +011+ | 4.1 | Dean Chance | 109.7 | ANA |
| +012+ | 3.66 | Juan Marichal | 143.3 | SFN |
| +022+ | 3.13 | Juan Pizarro | 106.7 | CHA |
| +024+ | 3.06 | Jim Maloney | 117 | CIN |
| +025+ | 3.04 | Bob Gibson | 123.3 | SLN |
| +029+ | 2.74 | Ron Herbel | 88 | SFN |
| +030+ | 2.73 | Dick Ellsworth | 144.7 | CHN |
| +035+ | 2.56 | Gaylord Perry | 60 | SFN |
| +039+ | 2.5 | Gary Peters | 111.7 | CHA |
| +040+ | 2.48 | Robin Roberts | 110.3 | BAL |
| +045+ | 2.24 | Jack Kralick | 109.7 | CLE |
| +050+ | 2.03 | Vern Law | 104.7 | PIT |
| +051+ | 2.01 | Roger Craig | 89.3 | SLN |
| +058+ | 1.93 | Tony Cloninger | 108.3 | ATL |
| +060+ | 1.9 | Dave Wickersham | 125.3 | DET |
| +062+ | 1.87 | Claude Osteen | 111.3 | TEX |
| +069+ | 1.71 | Joe Horlen | 75 | CHA |
| +070+ | 1.7 | Ken Johnson | 119 | HOU |
| +074+ | 1.67 | Jim Bouton | 121.7 | NYA |
| +076+ | 1.63 | Joe Gibbon | 65.7 | PIT |
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