| Starter | Tm | Tier | Game |
|---|---|---|---|
| Whitey Ford | NYA | 9.1 | 196405172_OAK_NYA |
| Juan Marichal | SFN | 7.79 | 196405160_NYN_SFN |
| Sandy Koufax | LAN | 4.57 | 196405171_PIT_LAN |
| Bob Friend | PIT | 3.84 | 196405150_PIT_LAN |
| Juan Pizarro | CHA | 3.72 | 196405170_CHA_TEX |
| 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 1964-05-17.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 2.87 | Juan Marichal | 66.7 | SFN |
| +003+ | 2.86 | Whitey Ford | 65 | NYA |
| +004+ | 2.81 | Jack Kralick | 48.3 | CLE |
| +005+ | 2.49 | Jim Maloney | 54 | CIN |
| +008+ | 2.29 | Don Drysdale | 65.7 | LAN |
| +011+ | 2.08 | Juan Pizarro | 37.7 | CHA |
| +013+ | 2.02 | Phil Ortega | 43 | LAN |
| +014+ | 1.89 | Chris Short | 23.7 | PHI |
| +015+ | 1.87 | Wally Bunker | 27 | BAL |
| +021+ | 1.72 | Robin Roberts | 50 | BAL |
| +022+ | 1.68 | Roger Craig | 46 | SLN |
| +023+ | 1.61 | Turk Farrell | 50.3 | HOU |
| +024+ | 1.6 | Dave Wickersham | 49 | DET |
| +028+ | 1.44 | Curt Simmons | 55.3 | SLN |
| +033+ | 1.36 | Jim Bunning | 43.7 | PHI |
| +035+ | 1.31 | Bob Gibson | 49 | SLN |
| XXXXX | 1.14 | Bob Lee | 32.7 | ANA |
| XXXXX | 1.09 | Tony Cloninger | 40.3 | ATL |
| XXXXX | 1.09 | Ken Johnson | 51.7 | HOU |
| XXXXX | 1.08 | Dennis Bennett | 50 | PHI |
| XXXXX | 1.04 | John Buzhardt | 30.7 | CHA |
| XXXXX | 0.99 | Dave Morehead | 37.3 | BOS |
| XXXXX | 0.96 | Milt Pappas | 36 | BAL |
| XXXXX | 0.95 | Dean Chance | 28 | ANA |
| XXXXX | 0.91 | Joe Nuxhall | 45.7 | CIN |
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