| Starter | Tm | Tier | Game |
|---|---|---|---|
| Whitey Ford | NYA | 12.5 | 196406200_NYA_CHA |
| Don Drysdale | LAN | 11.34 | 196406200_LAN_CIN |
| Juan Marichal | SFN | 5.38 | 196406180_SFN_SLN |
| 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 1964-06-20.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.95 | Whitey Ford | 128.3 | NYA |
| +003+ | 4.31 | Don Drysdale | 137.7 | LAN |
| +004+ | 4.01 | Sandy Koufax | 107.7 | LAN |
| +009+ | 3.38 | Bob Gibson | 105 | SLN |
| +013+ | 3.16 | Jim Bunning | 99.7 | PHI |
| +014+ | 3.15 | Jim Maloney | 98 | CIN |
| +016+ | 3.03 | Juan Pizarro | 81.7 | CHA |
| +017+ | 3.01 | Chris Short | 68 | PHI |
| +020+ | 2.92 | Robin Roberts | 97.3 | BAL |
| +022+ | 2.88 | Dean Chance | 85.3 | ANA |
| +025+ | 2.62 | Jack Kralick | 93.3 | CLE |
| +029+ | 2.39 | Turk Farrell | 95 | HOU |
| +036+ | 2.23 | Roger Craig | 69.7 | SLN |
| +045+ | 1.9 | Hank Fischer | 83 | ATL |
| +048+ | 1.75 | Ron Herbel | 68 | SFN |
| +051+ | 1.7 | Ken Johnson | 99.3 | HOU |
| +052+ | 1.69 | Juan Marichal | 116.3 | SFN |
| +056+ | 1.65 | Sam McDowell | 38 | CLE |
| +057+ | 1.63 | Gary Peters | 94.7 | CHA |
| +063+ | 1.46 | Claude Osteen | 98.7 | TEX |
| +066+ | 1.43 | Tony Cloninger | 89.7 | ATL |
| +068+ | 1.41 | Fred Newman | 67.7 | ANA |
| +072+ | 1.39 | Curt Simmons | 91.7 | SLN |
| +073+ | 1.35 | Steve Hamilton | 29.7 | NYA |
| +079+ | 1.27 | Vern Law | 86 | PIT |
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