| Starter | Tm | Tier | Game |
|---|---|---|---|
| Juan Marichal | SFN | 7.79 | 196405160_NYN_SFN |
| Don Drysdale | LAN | 6.96 | 196405142_LAN_CHN |
| Warren Spahn | ATL | 4 | 196405140_ATL_NYN |
| Bob Friend | PIT | 3.84 | 196405150_PIT_LAN |
| Robin Roberts | BAL | 3.08 | 196405140_BAL_TEX |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bennie Daniels | TEX | -3.37 | 196405160_CHA_TEX |
| Ray Sadecki | SLN | -2.37 | 196405160_ATL_SLN |
| Glen Hobbie | CHN | -1.7 | 196405160_CIN_CHN |
| Galen Cisco | NYN | -1.3 | 196405140_ATL_NYN |
| Moe Drabowsky | OAK | -0.89 | 196405160_OAK_NYA |
Based on accumulated WAA for this season up to 1964-05-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 2.87 | Juan Marichal | 66.7 | SFN |
| +003+ | 2.78 | Jack Kralick | 48.3 | CLE |
| +006+ | 2.3 | Don Drysdale | 65.7 | LAN |
| +010+ | 2.11 | Whitey Ford | 56 | NYA |
| +012+ | 2.03 | Phil Ortega | 43 | LAN |
| +014+ | 1.91 | Jim Maloney | 45 | CIN |
| +015+ | 1.89 | Juan Pizarro | 30.7 | CHA |
| +016+ | 1.88 | Wally Bunker | 27 | BAL |
| +017+ | 1.73 | Robin Roberts | 50 | BAL |
| +019+ | 1.69 | Roger Craig | 46 | SLN |
| +022+ | 1.62 | Turk Farrell | 50.3 | HOU |
| +023+ | 1.61 | Dave Wickersham | 49 | DET |
| +030+ | 1.38 | Jim Bunning | 43.7 | PHI |
| +032+ | 1.33 | Bob Gibson | 49 | SLN |
| XXXXX | 1.18 | Hank Fischer | 41.3 | ATL |
| XXXXX | 1.15 | Bob Lee | 32.7 | ANA |
| XXXXX | 1.11 | Ken Johnson | 51.7 | HOU |
| XXXXX | 1.1 | Dennis Bennett | 50 | PHI |
| XXXXX | 1.07 | Chris Short | 14.3 | PHI |
| XXXXX | 1.07 | Al Jackson | 50.3 | NYN |
| XXXXX | 1.05 | John Buzhardt | 30.7 | CHA |
| XXXXX | 0.96 | Milt Pappas | 36 | BAL |
| XXXXX | 0.93 | Dean Chance | 27.7 | ANA |
| XXXXX | 0.93 | Jim Kaat | 45.3 | MIN |
| XXXXX | 0.92 | Joe Nuxhall | 45.7 | CIN |
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