| Starter | Tm | Tier | Game |
|---|---|---|---|
| Whitey Ford | NYA | 12.5 | 196406200_NYA_CHA |
| Don Drysdale | LAN | 11.34 | 196406200_LAN_CIN |
| Juan Pizarro | CHA | 4.13 | 196406211_NYA_CHA |
| Camilo Pascual | MIN | 2.17 | 196406220_CLE_MIN |
| Jack Kralick | CLE | 1.74 | 196406210_CLE_ANA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mudcat Grant | MIN | -2.99 | 196406200_DET_MIN |
| Glen Hobbie | SLN | -2.84 | 196406200_SFN_SLN |
| Jack Fisher | NYN | -2.14 | 196406200_PHI_NYN |
| Phil Regan | DET | -1.5 | 196406200_DET_MIN |
| Barry Latman | ANA | -1.38 | 196406220_TEX_ANA |
Based on accumulated WAA for this season up to 1964-06-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 5.84 | Whitey Ford | 128.3 | NYA |
| +003+ | 4.37 | Don Drysdale | 137.7 | LAN |
| +004+ | 4.12 | Sandy Koufax | 113.7 | LAN |
| +006+ | 3.93 | Jim Bunning | 108.7 | PHI |
| +009+ | 3.39 | Bob Gibson | 105 | SLN |
| +015+ | 3.18 | Juan Pizarro | 89.7 | CHA |
| +016+ | 3.16 | Jim Maloney | 98 | CIN |
| +019+ | 3.02 | Chris Short | 68 | PHI |
| +021+ | 2.93 | Robin Roberts | 97.3 | BAL |
| +022+ | 2.89 | Dean Chance | 85.3 | ANA |
| +027+ | 2.68 | Jack Kralick | 98 | CLE |
| +029+ | 2.39 | Turk Farrell | 95 | HOU |
| +039+ | 2.07 | Roger Craig | 72.7 | SLN |
| +047+ | 1.9 | Hank Fischer | 83 | ATL |
| +051+ | 1.76 | Ron Herbel | 68 | SFN |
| +052+ | 1.71 | Juan Marichal | 116.3 | SFN |
| +056+ | 1.65 | Ken Johnson | 106 | HOU |
| +061+ | 1.54 | Steve Hamilton | 37.7 | NYA |
| +063+ | 1.51 | Gary Peters | 94.7 | CHA |
| +065+ | 1.49 | Gaylord Perry | 44 | SFN |
| +066+ | 1.48 | Claude Osteen | 98.7 | TEX |
| +070+ | 1.43 | Tony Cloninger | 89.7 | ATL |
| +071+ | 1.42 | Fred Newman | 67.7 | ANA |
| +074+ | 1.33 | Bobby Bolin | 65.3 | SFN |
| +076+ | 1.28 | Vern Law | 86 | PIT |
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