| Starter | Tm | Tier | Game |
|---|---|---|---|
| Whitey Ford | NYA | 11.72 | 196406122_CHA_NYA |
| Sandy Koufax | LAN | 6.63 | 196406120_SLN_LAN |
| Juan Marichal | SFN | 6 | 196406130_ATL_SFN |
| Juan Pizarro | CHA | 4.53 | 196406141_CHA_NYA |
| Chris Short | PHI | 3.65 | 196406141_NYN_PHI |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Moe Drabowsky | OAK | -2.56 | 196406141_OAK_CLE |
| Al Jackson | NYN | -1.76 | 196406142_NYN_PHI |
| Ray Sadecki | SLN | -1.5 | 196406130_SLN_LAN |
| Barry Latman | ANA | -1.36 | 196406142_ANA_DET |
| Dick Donovan | CLE | -1.17 | 196406141_OAK_CLE |
Based on accumulated WAA for this season up to 1964-06-14.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 5 | Whitey Ford | 110.3 | NYA |
| +003+ | 4.3 | Don Drysdale | 122.3 | LAN |
| +004+ | 4.01 | Robin Roberts | 90 | BAL |
| +005+ | 3.57 | Jim Bunning | 94.7 | PHI |
| +007+ | 3.26 | Sandy Koufax | 98.7 | LAN |
| +012+ | 2.93 | Bob Gibson | 97 | SLN |
| +013+ | 2.92 | Chris Short | 62 | PHI |
| +017+ | 2.77 | Jim Maloney | 91 | CIN |
| +018+ | 2.71 | Juan Marichal | 111.3 | SFN |
| +019+ | 2.7 | Dean Chance | 73 | ANA |
| +023+ | 2.59 | Turk Farrell | 89.7 | HOU |
| +024+ | 2.49 | Jack Kralick | 84.3 | CLE |
| +029+ | 2.29 | Juan Pizarro | 72.7 | CHA |
| +043+ | 1.91 | Hank Fischer | 83 | ATL |
| +045+ | 1.84 | Roger Craig | 65 | SLN |
| +046+ | 1.81 | Ron Herbel | 61.3 | SFN |
| +049+ | 1.76 | John Buzhardt | 61.7 | CHA |
| +058+ | 1.53 | Ken Johnson | 92 | HOU |
| +060+ | 1.47 | Claude Osteen | 98.7 | TEX |
| +062+ | 1.45 | Dick Ellsworth | 112 | CHN |
| +066+ | 1.4 | Dennis Bennett | 91.3 | PHI |
| +065+ | 1.4 | Sam McDowell | 30 | CLE |
| +069+ | 1.37 | Steve Hamilton | 29.7 | NYA |
| +071+ | 1.31 | Joe Moeller | 69 | LAN |
| XXXXX | 1.22 | Jim Bouton | 89.7 | NYA |
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