| Starter | Tm | Tier | Game |
|---|---|---|---|
| Don Drysdale | LAN | 6.44 | 196405060_HOU_LAN |
| Bob Friend | PIT | 4.93 | 196405060_SLN_PIT |
| Juan Marichal | SFN | 4.79 | 196405080_LAN_SFN |
| Gary Peters | CHA | 3.49 | 196405061_OAK_CHA |
| Robin Roberts | BAL | 3.32 | 196405080_BAL_DET |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ray Sadecki | SLN | -5.37 | 196405060_SLN_PIT |
| Jack Fisher | NYN | -3.65 | 196405080_SLN_NYN |
| Bennie Daniels | TEX | -3.51 | 196405061_NYA_TEX |
| Mike McCormick | BAL | -2.8 | 196405060_BAL_CLE |
| Mudcat Grant | CLE | -2.1 | 196405070_BAL_CLE |
Based on accumulated WAA for this season up to 1964-05-08.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 1.88 | Robin Roberts | 43 | BAL |
| +004+ | 1.82 | Jack Kralick | 30.3 | CLE |
| +006+ | 1.79 | Juan Marichal | 49 | SFN |
| +007+ | 1.67 | Ken Johnson | 44 | HOU |
| +010+ | 1.59 | Jim Maloney | 37 | CIN |
| +011+ | 1.56 | Jim Bunning | 31.7 | PHI |
| +013+ | 1.55 | Gary Peters | 34.7 | CHA |
| +012+ | 1.55 | Whitey Ford | 44 | NYA |
| +016+ | 1.45 | Dave Wickersham | 34 | DET |
| +021+ | 1.28 | Bob Gibson | 37 | SLN |
| +022+ | 1.26 | Juan Pizarro | 21.7 | CHA |
| XXXXX | 1.22 | Phil Ortega | 34 | LAN |
| XXXXX | 1.18 | Bob Lee | 26.3 | ANA |
| XXXXX | 1.09 | Roger Craig | 32.3 | SLN |
| XXXXX | 1.09 | Dave Morehead | 22.3 | BOS |
| XXXXX | 1.07 | Tony Cloninger | 26.7 | ATL |
| XXXXX | 0.97 | Pedro Ramos | 25 | CLE |
| XXXXX | 0.94 | Turk Farrell | 33 | HOU |
| XXXXX | 0.92 | Sandy Koufax | 28 | LAN |
| XXXXX | 0.92 | Don Drysdale | 47.7 | LAN |
| XXXXX | 0.9 | Dean Chance | 18 | ANA |
| XXXXX | 0.89 | Warren Spahn | 39 | ATL |
| XXXXX | 0.86 | Al Downing | 23 | NYA |
| XXXXX | 0.82 | Jack Lamabe | 38.7 | BOS |
| XXXXX | 0.75 | John Buzhardt | 20.7 | CHA |
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