| Starter | Tm | Tier | Game |
|---|---|---|---|
| Don Drysdale | LAN | 7.98 | 196405180_PIT_LAN |
| Juan Marichal | SFN | 7.81 | 196405200_PHI_SFN |
| Bob Friend | PIT | 2.98 | 196405190_PIT_HOU |
| Warren Spahn | ATL | 2.81 | 196405190_ATL_CIN |
| Robin Roberts | BAL | 2.8 | 196405190_OAK_BAL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Art Mahaffey | PHI | -1.73 | 196405200_PHI_SFN |
| Galen Cisco | NYN | -1.7 | 196405180_NYN_SFN |
| Frank Lary | DET | -1.48 | 196405180_DET_TEX |
| Moe Drabowsky | OAK | -1.35 | 196405190_OAK_BAL |
| Nick Willhite | LAN | -0.58 | 196405200_NYN_LAN |
Based on accumulated WAA for this season up to 1964-05-20.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 2.81 | Jack Kralick | 48.3 | CLE |
| +003+ | 2.76 | Whitey Ford | 65 | NYA |
| +007+ | 2.45 | Jim Maloney | 54 | CIN |
| +010+ | 2.13 | Jim Bunning | 52.7 | PHI |
| +011+ | 2.06 | Juan Marichal | 72.3 | SFN |
| +013+ | 2.06 | Juan Pizarro | 37.7 | CHA |
| +012+ | 2.06 | Bob Gibson | 58 | SLN |
| +014+ | 2.05 | Don Drysdale | 70.7 | LAN |
| +017+ | 1.94 | Robin Roberts | 58 | BAL |
| +016+ | 1.94 | Dave Wickersham | 58 | DET |
| +018+ | 1.93 | Phil Ortega | 52 | LAN |
| +021+ | 1.88 | Chris Short | 23.7 | PHI |
| +022+ | 1.85 | Wally Bunker | 27 | BAL |
| +028+ | 1.66 | Roger Craig | 46 | SLN |
| +030+ | 1.58 | Turk Farrell | 50.3 | HOU |
| +036+ | 1.41 | Curt Simmons | 55.3 | SLN |
| +040+ | 1.34 | Dennis Bennett | 58 | PHI |
| XXXXX | 1.13 | Bob Bruce | 37.7 | HOU |
| XXXXX | 1.08 | Galen Cisco | 31.3 | NYN |
| XXXXX | 1.06 | Milt Pappas | 45 | BAL |
| XXXXX | 1.05 | Tony Cloninger | 40.3 | ATL |
| XXXXX | 1.02 | John Buzhardt | 30.7 | CHA |
| XXXXX | 1.01 | Steve Blass | 14 | PIT |
| XXXXX | 0.96 | Dave Morehead | 37.3 | BOS |
| XXXXX | 0.91 | Jack Sanford | 56 | SFN |
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