| Starter | Tm | Tier | Game |
|---|---|---|---|
| Whitey Ford | NYA | 11.32 | 196405050_DET_NYA |
| Sandy Koufax | LAN | 5.77 | 196405040_CHN_LAN |
| Juan Marichal | SFN | 5.67 | 196405030_SFN_LAN |
| Warren Spahn | ATL | 5.07 | 196405050_NYN_ATL |
| Robin Roberts | BAL | 3.58 | 196405032_CLE_BAL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jay Hook | NYN | -7.02 | 196405032_NYN_CIN |
| Barry Latman | ANA | -2.87 | 196405050_ANA_OAK |
| Art Mahaffey | PHI | -2 | 196405030_PHI_ATL |
| Mudcat Grant | CLE | -1.98 | 196405031_CLE_BAL |
| Hank Fischer | ATL | -1.35 | 196405030_PHI_ATL |
Based on accumulated WAA for this season up to 1964-05-05.
| Rank | WAA | Name | IP | Tm |
|---|
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