| Starter | Tm | Tier | Game |
|---|---|---|---|
| Whitey Ford | NYA | 7.72 | 196405090_NYA_CLE |
| Sandy Koufax | LAN | 5.51 | 196405090_LAN_SFN |
| Juan Marichal | SFN | 4.79 | 196405080_LAN_SFN |
| Robin Roberts | BAL | 3.32 | 196405080_BAL_DET |
| Jim Maloney | CIN | 2.51 | 196405070_CIN_NYN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Fisher | NYN | -3.65 | 196405080_SLN_NYN |
| Mudcat Grant | CLE | -2.1 | 196405070_BAL_CLE |
| Joe Moeller | LAN | -1.57 | 196405070_HOU_LAN |
| Art Mahaffey | PHI | -1.26 | 196405070_ATL_PHI |
| Vern Law | PIT | -0.84 | 196405090_ATL_PIT |
Based on accumulated WAA for this season up to 1964-05-09.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 1.93 | Robin Roberts | 43 | BAL |
| +004+ | 1.9 | Whitey Ford | 50 | NYA |
| +005+ | 1.89 | Bob Gibson | 46 | SLN |
| +007+ | 1.86 | Jack Kralick | 30.3 | CLE |
| +008+ | 1.85 | Juan Marichal | 49 | SFN |
| +013+ | 1.64 | Jim Maloney | 37 | CIN |
| +015+ | 1.61 | Gary Peters | 34.7 | CHA |
| +017+ | 1.49 | Dave Wickersham | 34 | DET |
| +021+ | 1.29 | Juan Pizarro | 21.7 | CHA |
| +022+ | 1.27 | Phil Ortega | 34 | LAN |
| XXXXX | 1.21 | Bob Lee | 26.3 | ANA |
| XXXXX | 1.2 | Jim Bunning | 36.7 | PHI |
| XXXXX | 1.13 | Roger Craig | 32.3 | SLN |
| XXXXX | 1.11 | Tony Cloninger | 26.7 | ATL |
| XXXXX | 1.08 | Galen Cisco | 16.3 | NYN |
| XXXXX | 0.99 | Turk Farrell | 33 | HOU |
| XXXXX | 0.99 | Don Drysdale | 47.7 | LAN |
| XXXXX | 0.95 | Warren Spahn | 39 | ATL |
| XXXXX | 0.94 | Dean Chance | 20.7 | ANA |
| XXXXX | 0.89 | Al Downing | 23 | NYA |
| XXXXX | 0.87 | Jack Lamabe | 38.7 | BOS |
| XXXXX | 0.85 | Sandy Koufax | 34 | LAN |
| XXXXX | 0.75 | Dave Morehead | 25.3 | BOS |
| XXXXX | 0.69 | Ken Johnson | 44 | HOU |
| XXXXX | 0.64 | Al Jackson | 41.3 | NYN |
_