| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 5.77 | 196405040_CHN_LAN |
| Juan Marichal | SFN | 5.67 | 196405030_SFN_LAN |
| Bob Friend | PIT | 5.25 | 196405020_PIT_SLN |
| Robin Roberts | BAL | 3.58 | 196405032_CLE_BAL |
| Ernie Broglio | SLN | 2.64 | 196405030_PIT_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jay Hook | NYN | -7.02 | 196405032_NYN_CIN |
| Jim Owens | HOU | -4.67 | 196405020_CHN_HOU |
| Art Mahaffey | PHI | -2 | 196405030_PHI_ATL |
| Mudcat Grant | CLE | -1.98 | 196405031_CLE_BAL |
| Joe Moeller | LAN | -1.56 | 196405020_SFN_LAN |
Based on accumulated WAA for this season up to 1964-05-04.
| Rank | WAA | Name | IP | Tm |
|---|
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