| Starter | Tm | Tier | Game |
|---|---|---|---|
| Whitey Ford | NYA | 7.72 | 196405090_NYA_CLE |
| Don Drysdale | LAN | 5.58 | 196405100_LAN_SFN |
| Warren Spahn | ATL | 5.34 | 196405101_ATL_PIT |
| Bob Friend | PIT | 5.05 | 196405101_ATL_PIT |
| Gary Peters | CHA | 3.51 | 196405100_CHA_ANA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Owens | HOU | -3.47 | 196405102_HOU_CHN |
| Bennie Daniels | TEX | -3.1 | 196405110_BAL_TEX |
| Ray Sadecki | SLN | -2.8 | 196405110_SLN_PHI |
| Glen Hobbie | CHN | -2.33 | 196405102_HOU_CHN |
| Mike McCormick | BAL | -2.17 | 196405110_BAL_TEX |
Based on accumulated WAA for this season up to 1964-05-11.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 2.28 | Dave Wickersham | 43 | DET |
| +003+ | 2.2 | Jack Kralick | 39.3 | CLE |
| +008+ | 1.98 | Robin Roberts | 43 | BAL |
| +009+ | 1.93 | Bob Gibson | 46 | SLN |
| +010+ | 1.91 | Whitey Ford | 50 | NYA |
| +011+ | 1.9 | Juan Marichal | 49 | SFN |
| +016+ | 1.65 | Jim Maloney | 37 | CIN |
| +018+ | 1.58 | Don Drysdale | 56.7 | LAN |
| +019+ | 1.57 | Turk Farrell | 42 | HOU |
| +024+ | 1.32 | Wally Bunker | 18 | BAL |
| +025+ | 1.3 | Juan Pizarro | 21.7 | CHA |
| +026+ | 1.29 | Phil Ortega | 34 | LAN |
| +028+ | 1.25 | Gary Peters | 37.7 | CHA |
| XXXXX | 1.21 | Jim Bunning | 36.7 | PHI |
| XXXXX | 1.17 | Roger Craig | 39.7 | SLN |
| XXXXX | 1.12 | Tony Cloninger | 26.7 | ATL |
| XXXXX | 1.08 | Galen Cisco | 16.3 | NYN |
| XXXXX | 1.02 | Chris Short | 13.7 | PHI |
| XXXXX | 0.9 | Jim Bouton | 38 | NYA |
| XXXXX | 0.89 | Al Downing | 23 | NYA |
| XXXXX | 0.87 | Sandy Koufax | 34 | LAN |
| XXXXX | 0.87 | Ray Washburn | 14.7 | SLN |
| XXXXX | 0.79 | Bob Lee | 28.7 | ANA |
| XXXXX | 0.78 | Dave Morehead | 25.3 | BOS |
| XXXXX | 0.73 | Dean Chance | 20.7 | ANA |
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