| Starter | Tm | Tier | Game |
|---|---|---|---|
| Whitey Ford | NYA | 12.5 | 196406200_NYA_CHA |
| Don Drysdale | LAN | 11.34 | 196406200_LAN_CIN |
| Juan Pizarro | CHA | 4.13 | 196406211_NYA_CHA |
| Turk Farrell | HOU | 3.37 | 196406190_HOU_ATL |
| Jim Maloney | CIN | 3.27 | 196406190_LAN_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Moe Drabowsky | OAK | -3.16 | 196406190_TEX_OAK |
| Mudcat Grant | MIN | -2.99 | 196406200_DET_MIN |
| Glen Hobbie | SLN | -2.84 | 196406200_SFN_SLN |
| Bennie Daniels | TEX | -2.75 | 196406190_TEX_OAK |
| Jack Fisher | NYN | -2.14 | 196406200_PHI_NYN |
Based on accumulated WAA for this season up to 1964-06-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 5.8 | Whitey Ford | 128.3 | NYA |
| +003+ | 4.32 | Don Drysdale | 137.7 | LAN |
| +004+ | 4.08 | Sandy Koufax | 113.7 | LAN |
| +005+ | 3.9 | Jim Bunning | 108.7 | PHI |
| +010+ | 3.36 | Bob Gibson | 105 | SLN |
| +015+ | 3.16 | Juan Pizarro | 89.7 | CHA |
| +016+ | 3.13 | Jim Maloney | 98 | CIN |
| +018+ | 3 | Chris Short | 68 | PHI |
| +021+ | 2.91 | Robin Roberts | 97.3 | BAL |
| +022+ | 2.86 | Dean Chance | 85.3 | ANA |
| +025+ | 2.79 | Jack Kralick | 98 | CLE |
| +030+ | 2.37 | Turk Farrell | 95 | HOU |
| +039+ | 2.05 | Roger Craig | 72.7 | SLN |
| +046+ | 1.88 | Hank Fischer | 83 | ATL |
| +049+ | 1.74 | Ron Herbel | 68 | SFN |
| +053+ | 1.67 | Juan Marichal | 116.3 | SFN |
| +055+ | 1.65 | Sam McDowell | 38 | CLE |
| +058+ | 1.62 | Ken Johnson | 106 | HOU |
| +064+ | 1.48 | Gary Peters | 94.7 | CHA |
| +065+ | 1.47 | Gaylord Perry | 44 | SFN |
| +067+ | 1.44 | Claude Osteen | 98.7 | TEX |
| +069+ | 1.4 | Tony Cloninger | 89.7 | ATL |
| +070+ | 1.4 | Fred Newman | 67.7 | ANA |
| +076+ | 1.31 | Steve Hamilton | 29.7 | NYA |
| +080+ | 1.25 | Vern Law | 86 | PIT |
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