| Starter | Tm | Tier | Game |
|---|---|---|---|
| Whitey Ford | NYA | 9.1 | 196405172_OAK_NYA |
| Don Drysdale | LAN | 7.98 | 196405180_PIT_LAN |
| Juan Pizarro | CHA | 3.72 | 196405170_CHA_TEX |
| Bob Friend | PIT | 2.98 | 196405190_PIT_HOU |
| Warren Spahn | ATL | 2.81 | 196405190_ATL_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Fisher | NYN | -3.54 | 196405172_NYN_SFN |
| Jim Owens | HOU | -2.67 | 196405170_PHI_HOU |
| Mudcat Grant | CLE | -2.3 | 196405172_CLE_DET |
| Frank Lary | DET | -1.48 | 196405180_DET_TEX |
| Moe Drabowsky | OAK | -1.35 | 196405190_OAK_BAL |
Based on accumulated WAA for this season up to 1964-05-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 2.85 | Juan Marichal | 66.7 | SFN |
| +003+ | 2.81 | Jack Kralick | 48.3 | CLE |
| +004+ | 2.75 | Whitey Ford | 65 | NYA |
| +007+ | 2.46 | Jim Maloney | 54 | CIN |
| +010+ | 2.14 | Jim Bunning | 52.7 | PHI |
| +012+ | 2.06 | Juan Pizarro | 37.7 | CHA |
| +013+ | 2.05 | Don Drysdale | 70.7 | LAN |
| +014+ | 1.94 | Robin Roberts | 58 | BAL |
| +016+ | 1.93 | Phil Ortega | 52 | LAN |
| +017+ | 1.92 | Dave Wickersham | 58 | DET |
| +018+ | 1.88 | Chris Short | 23.7 | PHI |
| +020+ | 1.85 | Wally Bunker | 27 | BAL |
| +027+ | 1.66 | Roger Craig | 46 | SLN |
| +029+ | 1.58 | Turk Farrell | 50.3 | HOU |
| +032+ | 1.41 | Curt Simmons | 55.3 | SLN |
| +033+ | 1.35 | Dennis Bennett | 58 | PHI |
| +036+ | 1.29 | Bob Gibson | 49 | SLN |
| XXXXX | 1.13 | Bob Bruce | 37.7 | HOU |
| XXXXX | 1.13 | Bob Lee | 32.7 | ANA |
| XXXXX | 1.08 | Galen Cisco | 31.3 | NYN |
| XXXXX | 1.06 | Tony Cloninger | 40.3 | ATL |
| XXXXX | 1.02 | John Buzhardt | 30.7 | CHA |
| XXXXX | 1.01 | Steve Blass | 14 | PIT |
| XXXXX | 0.96 | Dave Morehead | 37.3 | BOS |
| XXXXX | 0.94 | Dean Chance | 28 | ANA |
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