| Starter | Tm | Tier | Game |
|---|---|---|---|
| Whitey Ford | NYA | 11.77 | 196406270_DET_NYA |
| Don Drysdale | LAN | 9.34 | 196406280_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 |
| Ray Sadecki | SLN | -1.83 | 196406282_PHI_SLN |
| Frank Lary | NYN | -1.72 | 196406282_NYN_ATL |
| Bill Monbouquette | BOS | -1.68 | 196406282_CLE_BOS |
| Barry Latman | ANA | -1.26 | 196406280_OAK_ANA |
Based on accumulated WAA for this season up to 1964-06-28.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 4.93 | Don Drysdale | 153.7 | LAN |
| +004+ | 4.72 | Sandy Koufax | 122.7 | LAN |
| +005+ | 4.66 | Whitey Ford | 133.3 | NYA |
| +007+ | 4.14 | Dean Chance | 102.3 | ANA |
| +008+ | 4.08 | Chris Short | 85 | PHI |
| +011+ | 3.75 | Jim Bunning | 115.7 | PHI |
| +015+ | 3.47 | Bob Gibson | 113 | SLN |
| +018+ | 3.16 | Jack Kralick | 105 | CLE |
| +019+ | 3.09 | Juan Pizarro | 97.7 | CHA |
| +023+ | 2.96 | Juan Marichal | 134.3 | SFN |
| +024+ | 2.93 | Ron Herbel | 85 | SFN |
| +036+ | 2.41 | Robin Roberts | 101.3 | BAL |
| +037+ | 2.38 | Dick Ellsworth | 135 | CHN |
| +039+ | 2.36 | Jim Maloney | 108 | CIN |
| +040+ | 2.33 | Roger Craig | 80.3 | SLN |
| +047+ | 2.14 | Gary Peters | 103.7 | CHA |
| +051+ | 2.04 | Turk Farrell | 105 | HOU |
| +054+ | 1.91 | Dave Wickersham | 117 | DET |
| +059+ | 1.82 | Joe Gibbon | 65.3 | PIT |
| +061+ | 1.79 | Claude Osteen | 102.3 | TEX |
| +069+ | 1.65 | Tony Cloninger | 99.3 | ATL |
| +070+ | 1.62 | Hank Fischer | 89.3 | ATL |
| +079+ | 1.5 | Bo Belinsky | 83.3 | ANA |
| +080+ | 1.49 | Bob Shaw | 57 | SFN |
| +084+ | 1.43 | Vern Law | 95 | PIT |
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