| 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 |
| Robin Roberts | BAL | 3.64 | 196405290_BAL_ANA |
| Bob Friend | PIT | 3.27 | 196405310_LAN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Glen Hobbie | CHN | -3.38 | 196405290_ATL_CHN |
| Jack Fisher | NYN | -3.15 | 196405300_SFN_NYN |
| Ray Sadecki | SLN | -2.66 | 196405290_CIN_SLN |
| Jim Owens | HOU | -2.15 | 196405310_HOU_PHI |
| Mudcat Grant | CLE | -1.73 | 196405311_CLE_TEX |
Based on accumulated WAA for this season up to 1964-05-31.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 3.62 | Whitey Ford | 85.3 | NYA |
| +004+ | 3.02 | Chris Short | 42.3 | PHI |
| +006+ | 2.92 | Juan Pizarro | 50.7 | CHA |
| +007+ | 2.88 | Robin Roberts | 74.7 | BAL |
| +008+ | 2.86 | Bob Gibson | 75 | SLN |
| +013+ | 2.47 | Juan Marichal | 90.3 | SFN |
| +014+ | 2.45 | Jim Bunning | 67.3 | PHI |
| +015+ | 2.4 | Turk Farrell | 67.3 | HOU |
| +020+ | 2.3 | Don Drysdale | 94 | LAN |
| +021+ | 2.23 | Phil Ortega | 64.3 | LAN |
| +022+ | 2.21 | Curt Simmons | 72.3 | SLN |
| +023+ | 2.14 | Jack Kralick | 60.3 | CLE |
| +025+ | 2.13 | Jim Maloney | 68.3 | CIN |
| +028+ | 1.97 | Dennis Bennett | 74 | PHI |
| +031+ | 1.89 | Bob Lee | 47 | ANA |
| +032+ | 1.88 | John Buzhardt | 48.3 | CHA |
| +033+ | 1.87 | Hank Fischer | 67.3 | ATL |
| +037+ | 1.76 | Ken Johnson | 74.7 | HOU |
| +039+ | 1.75 | Wally Bunker | 41 | BAL |
| +040+ | 1.63 | Bob Bruce | 51 | HOU |
| +044+ | 1.55 | Roger Craig | 59.7 | SLN |
| +050+ | 1.41 | Galen Cisco | 51.3 | NYN |
| +054+ | 1.35 | Sandy Koufax | 71.7 | LAN |
| +058+ | 1.27 | Jim Duckworth | 24.3 | TEX |
| +059+ | 1.27 | Willie Smith | 27.3 | ANA |
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