| Starter | Tm | Tier | Game |
|---|---|---|---|
| Whitey Ford | NYA | 9.1 | 196405172_OAK_NYA |
| Don Drysdale | LAN | 7.98 | 196405180_PIT_LAN |
| Juan Marichal | SFN | 7.79 | 196405160_NYN_SFN |
| Juan Pizarro | CHA | 3.72 | 196405170_CHA_TEX |
| Turk Farrell | HOU | 2.71 | 196405160_PHI_HOU |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Fisher | NYN | -3.54 | 196405172_NYN_SFN |
| Bennie Daniels | TEX | -3.37 | 196405160_CHA_TEX |
| Jim Owens | HOU | -2.67 | 196405170_PHI_HOU |
| Ray Sadecki | SLN | -2.37 | 196405160_ATL_SLN |
| Mudcat Grant | CLE | -2.3 | 196405172_CLE_DET |
Based on accumulated WAA for this season up to 1964-05-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 2.86 | Juan Marichal | 66.7 | SFN |
| +003+ | 2.84 | Whitey Ford | 65 | NYA |
| +004+ | 2.8 | Jack Kralick | 48.3 | CLE |
| +005+ | 2.48 | Jim Maloney | 54 | CIN |
| +010+ | 2.14 | Jim Bunning | 52.7 | PHI |
| +011+ | 2.08 | Juan Pizarro | 37.7 | CHA |
| +012+ | 2.07 | Don Drysdale | 70.7 | LAN |
| +014+ | 2.01 | Phil Ortega | 43 | LAN |
| +015+ | 1.88 | Chris Short | 23.7 | PHI |
| +017+ | 1.87 | Wally Bunker | 27 | BAL |
| +021+ | 1.71 | Robin Roberts | 50 | BAL |
| +022+ | 1.67 | Roger Craig | 46 | SLN |
| +025+ | 1.6 | Turk Farrell | 50.3 | HOU |
| +026+ | 1.6 | Dave Wickersham | 49 | DET |
| +029+ | 1.43 | Curt Simmons | 55.3 | SLN |
| +038+ | 1.3 | Bob Gibson | 49 | SLN |
| XXXXX | 1.14 | Bob Lee | 32.7 | ANA |
| XXXXX | 1.08 | Tony Cloninger | 40.3 | ATL |
| XXXXX | 1.08 | Galen Cisco | 31.3 | NYN |
| XXXXX | 1.06 | Dennis Bennett | 50 | PHI |
| XXXXX | 1.04 | John Buzhardt | 30.7 | CHA |
| XXXXX | 1.01 | Steve Blass | 14 | PIT |
| XXXXX | 0.98 | Dave Morehead | 37.3 | BOS |
| XXXXX | 0.95 | Milt Pappas | 36 | BAL |
| XXXXX | 0.94 | Dean Chance | 28 | ANA |
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