| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bob Friend | PIT | 5.98 | 196404280_PIT_ATL |
| Juan Marichal | SFN | 4.42 | 196404290_SFN_CHN |
| Robin Roberts | BAL | 2.89 | 196404280_BAL_BOS |
| Turk Farrell | HOU | 2.49 | 196404300_LAN_HOU |
| Bob Gibson | SLN | 2.15 | 196404290_NYN_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Fisher | NYN | -4.94 | 196404290_NYN_SLN |
| Barry Latman | ANA | -3.5 | 196404280_TEX_ANA |
| Frank Lary | DET | -2.54 | 196404280_DET_OAK |
| Art Mahaffey | PHI | -2.19 | 196404280_PHI_CIN |
| Joe Moeller | LAN | -1.82 | 196404280_LAN_HOU |
Based on accumulated WAA for this season up to 1964-04-30.
| Rank | WAA | Name | IP | Tm |
|---|
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