| Starter | Tm | Tier | Game |
|---|---|---|---|
| Whitey Ford | NYA | 11.77 | 196406270_DET_NYA |
| Sandy Koufax | LAN | 8.84 | 196406250_LAN_SFN |
| Juan Pizarro | CHA | 4.26 | 196406262_CHA_MIN |
| Juan Marichal | SFN | 3.99 | 196406270_LAN_SFN |
| Dean Chance | ANA | 3.62 | 196406270_OAK_ANA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Moe Drabowsky | OAK | -4.36 | 196406261_OAK_ANA |
| Mudcat Grant | MIN | -3.2 | 196406250_CLE_MIN |
| Jack Fisher | NYN | -1.84 | 196406250_PIT_NYN |
| Dave Morehead | BOS | -1.58 | 196406260_CLE_BOS |
| Dave McNally | BAL | -0.34 | 196406260_BAL_TEX |
Based on accumulated WAA for this season up to 1964-06-27.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 4.66 | Sandy Koufax | 122.7 | LAN |
| +004+ | 4.61 | Whitey Ford | 133.3 | NYA |
| +005+ | 4.42 | Don Drysdale | 145.7 | LAN |
| +006+ | 4.11 | Dean Chance | 102.3 | ANA |
| +010+ | 3.7 | Jim Bunning | 115.7 | PHI |
| +012+ | 3.45 | Bob Gibson | 113 | SLN |
| +015+ | 3.28 | Chris Short | 76 | PHI |
| +020+ | 3.1 | Jack Kralick | 105 | CLE |
| +021+ | 3.05 | Juan Pizarro | 97.7 | CHA |
| +024+ | 2.92 | Juan Marichal | 134.3 | SFN |
| +030+ | 2.58 | Jim Maloney | 101 | CIN |
| +037+ | 2.38 | Robin Roberts | 101.3 | BAL |
| +038+ | 2.37 | Dick Ellsworth | 135 | CHN |
| +040+ | 2.31 | Roger Craig | 80.3 | SLN |
| +042+ | 2.26 | Ron Herbel | 77 | SFN |
| +046+ | 2.09 | Gary Peters | 103.7 | CHA |
| +051+ | 2.02 | Turk Farrell | 105 | HOU |
| +054+ | 1.92 | Vern Law | 93.7 | PIT |
| +056+ | 1.86 | Dave Wickersham | 117 | DET |
| +058+ | 1.81 | Joe Gibbon | 65.3 | PIT |
| +062+ | 1.77 | Claude Osteen | 102.3 | TEX |
| +067+ | 1.61 | Hank Fischer | 89.3 | ATL |
| +071+ | 1.55 | Steve Hamilton | 37.7 | NYA |
| +076+ | 1.48 | Bo Belinsky | 83.3 | ANA |
| +077+ | 1.48 | Bob Shaw | 57 | SFN |
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