| Starter | Tm | Tier | Game |
|---|---|---|---|
| Juan Marichal | SFN | 5.42 | 196406050_SFN_PHI |
| Sandy Koufax | LAN | 5.19 | 196406040_LAN_PHI |
| Juan Pizarro | CHA | 4.67 | 196406050_DET_CHA |
| Turk Farrell | HOU | 3.37 | 196406040_HOU_NYN |
| Bob Gibson | SLN | 3.35 | 196406040_SLN_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Glen Hobbie | SLN | -4.3 | 196406050_SLN_CIN |
| Jack Fisher | NYN | -2.23 | 196406060_LAN_NYN |
| Bennie Daniels | TEX | -2.07 | 196406060_TEX_CLE |
| Moe Drabowsky | OAK | -1.78 | 196406050_BOS_OAK |
| Dick Donovan | CLE | -0.69 | 196406040_CHA_CLE |
Based on accumulated WAA for this season up to 1964-06-06.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 4.24 | Whitey Ford | 94.3 | NYA |
| +003+ | 3.6 | Robin Roberts | 84 | BAL |
| +006+ | 3.15 | Jim Bunning | 77.3 | PHI |
| +007+ | 3.09 | Bob Gibson | 83 | SLN |
| +008+ | 3.08 | Don Drysdale | 104.3 | LAN |
| +011+ | 2.92 | Juan Pizarro | 63.3 | CHA |
| +013+ | 2.87 | Chris Short | 49 | PHI |
| +014+ | 2.86 | Dean Chance | 65 | ANA |
| +015+ | 2.66 | Jack Kralick | 77.3 | CLE |
| +020+ | 2.48 | Juan Marichal | 96.3 | SFN |
| +026+ | 2.18 | Bob Lee | 51.7 | ANA |
| +027+ | 2.17 | Hank Fischer | 74.3 | ATL |
| +028+ | 2.16 | Turk Farrell | 72.7 | HOU |
| +029+ | 2.11 | Galen Cisco | 60.3 | NYN |
| +032+ | 2.03 | Dennis Bennett | 89 | PHI |
| +033+ | 2.03 | Sandy Koufax | 80.7 | LAN |
| +035+ | 2.01 | Jim Maloney | 75 | CIN |
| +040+ | 1.81 | John Buzhardt | 55.3 | CHA |
| +043+ | 1.72 | Roger Craig | 62 | SLN |
| +045+ | 1.65 | Phil Ortega | 70.7 | LAN |
| +047+ | 1.61 | Ken Johnson | 81 | HOU |
| +048+ | 1.59 | Bob Bruce | 51 | HOU |
| +049+ | 1.59 | Curt Simmons | 77.7 | SLN |
| +054+ | 1.42 | Jim Duckworth | 26.3 | TEX |
| +057+ | 1.32 | Wally Bunker | 46.3 | BAL |
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