| Starter | Tm | Tier | Game |
|---|---|---|---|
| Whitey Ford | NYA | 8.28 | 196405130_NYA_DET |
| 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 |
|---|---|---|---|
| Jack Fisher | NYN | -3.67 | 196405130_ATL_NYN |
| Barry Latman | ANA | -1.36 | 196405131_OAK_ANA |
| Dick Donovan | CLE | -1.14 | 196405130_BOS_CLE |
| Fred Norman | CHN | -0.68 | 196405142_LAN_CHN |
| Aurelio Monteagudo | OAK | -0.66 | 196405131_OAK_ANA |
Based on accumulated WAA for this season up to 1964-05-15.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 2.65 | Juan Marichal | 57.7 | SFN |
| +005+ | 2.29 | Don Drysdale | 65.7 | LAN |
| +008+ | 2.23 | Jack Kralick | 39.3 | CLE |
| +010+ | 2.09 | Whitey Ford | 56 | NYA |
| +011+ | 2.02 | Phil Ortega | 43 | LAN |
| +013+ | 1.91 | Jim Maloney | 45 | CIN |
| +014+ | 1.88 | Juan Pizarro | 30.7 | CHA |
| +015+ | 1.87 | Wally Bunker | 27 | BAL |
| +017+ | 1.72 | Robin Roberts | 50 | BAL |
| +019+ | 1.69 | Roger Craig | 46 | SLN |
| +020+ | 1.59 | Dave Wickersham | 49 | DET |
| +022+ | 1.52 | Turk Farrell | 42 | HOU |
| +029+ | 1.36 | Jim Bunning | 43.7 | PHI |
| +032+ | 1.32 | Bob Gibson | 49 | SLN |
| XXXXX | 1.17 | Al Jackson | 50.3 | NYN |
| XXXXX | 1.16 | Hank Fischer | 41.3 | ATL |
| XXXXX | 1.13 | Bob Lee | 32.7 | ANA |
| XXXXX | 1.1 | Ken Johnson | 51.7 | HOU |
| XXXXX | 1.08 | Dennis Bennett | 50 | PHI |
| XXXXX | 1.06 | Chris Short | 14.3 | PHI |
| XXXXX | 1.04 | John Buzhardt | 30.7 | CHA |
| XXXXX | 0.99 | Galen Cisco | 22.7 | NYN |
| XXXXX | 0.95 | Milt Pappas | 36 | BAL |
| XXXXX | 0.94 | Jim Kaat | 45.3 | MIN |
| XXXXX | 0.91 | Dean Chance | 27.7 | ANA |
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