| Starter | Tm | Tier | Game |
|---|---|---|---|
| Whitey Ford | NYA | 10.12 | 196405300_NYA_OAK |
| Don Drysdale | LAN | 7.29 | 196405300_LAN_PIT |
| Juan Marichal | SFN | 6.45 | 196405311_SFN_NYN |
| Juan Pizarro | CHA | 5.38 | 196406010_CHA_CLE |
| Bob Friend | PIT | 3.27 | 196405310_LAN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Fisher | NYN | -3.15 | 196405300_SFN_NYN |
| Jim Owens | HOU | -2.15 | 196405310_HOU_PHI |
| Barry Latman | ANA | -1.97 | 196406010_BOS_ANA |
| Mudcat Grant | CLE | -1.73 | 196405311_CLE_TEX |
| Bennie Daniels | TEX | -1.66 | 196405312_CLE_TEX |
Based on accumulated WAA for this season up to 1964-06-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 3.63 | Whitey Ford | 85.3 | NYA |
| +004+ | 3.01 | Chris Short | 42.3 | PHI |
| +006+ | 2.89 | Jack Kralick | 69.3 | CLE |
| +007+ | 2.87 | Robin Roberts | 74.7 | BAL |
| +008+ | 2.85 | Bob Gibson | 75 | SLN |
| +009+ | 2.82 | Juan Pizarro | 56.7 | CHA |
| +014+ | 2.45 | Juan Marichal | 90.3 | SFN |
| +015+ | 2.43 | Jim Bunning | 67.3 | PHI |
| +016+ | 2.39 | Turk Farrell | 67.3 | HOU |
| +021+ | 2.29 | Don Drysdale | 94 | LAN |
| +022+ | 2.22 | Phil Ortega | 64.3 | LAN |
| +023+ | 2.2 | Curt Simmons | 72.3 | SLN |
| +025+ | 2.12 | Jim Maloney | 68.3 | CIN |
| +028+ | 1.96 | Dennis Bennett | 74 | PHI |
| +030+ | 1.88 | John Buzhardt | 48.3 | CHA |
| +031+ | 1.88 | Bob Lee | 47 | ANA |
| +035+ | 1.86 | Hank Fischer | 67.3 | ATL |
| +039+ | 1.75 | Ken Johnson | 74.7 | HOU |
| +040+ | 1.62 | Bob Bruce | 51 | HOU |
| +045+ | 1.54 | Roger Craig | 59.7 | SLN |
| +050+ | 1.4 | Galen Cisco | 51.3 | NYN |
| +054+ | 1.35 | Wally Bunker | 46.3 | BAL |
| +055+ | 1.34 | Sandy Koufax | 71.7 | LAN |
| +060+ | 1.27 | Jim Duckworth | 24.3 | TEX |
| +061+ | 1.27 | Willie Smith | 27.3 | ANA |
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