| Starter | Tm | Tier | Game |
|---|---|---|---|
| Whitey Ford | NYA | 13.2 | 196406162_BOS_NYA |
| Don Drysdale | LAN | 10.51 | 196406160_ATL_LAN |
| Juan Marichal | SFN | 5.38 | 196406180_SFN_SLN |
| Juan Pizarro | CHA | 3.43 | 196406161_CHA_BAL |
| Chris Short | PHI | 3.07 | 196406180_PHI_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Fisher | NYN | -2.4 | 196406160_NYN_PIT |
| Bennie Daniels | TEX | -2.13 | 196406160_ANA_TEX |
| Phil Regan | DET | -1.48 | 196406162_OAK_DET |
| Ray Sadecki | SLN | -1.38 | 196406180_SFN_SLN |
| Ted Bowsfield | OAK | -1.34 | 196406162_OAK_DET |
Based on accumulated WAA for this season up to 1964-06-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 5.09 | Whitey Ford | 117.3 | NYA |
| +003+ | 4.79 | Don Drysdale | 131.3 | LAN |
| +004+ | 3.96 | Sandy Koufax | 107.7 | LAN |
| +011+ | 3.14 | Jim Bunning | 99.7 | PHI |
| +014+ | 3.05 | Juan Pizarro | 81.7 | CHA |
| +015+ | 2.99 | Chris Short | 68 | PHI |
| +016+ | 2.9 | Bob Gibson | 97 | SLN |
| +018+ | 2.76 | Jim Maloney | 91 | CIN |
| +022+ | 2.58 | Dean Chance | 79.3 | ANA |
| +023+ | 2.58 | Jack Kralick | 93.3 | CLE |
| +024+ | 2.56 | Turk Farrell | 89.7 | HOU |
| +026+ | 2.54 | Robin Roberts | 90.3 | BAL |
| +035+ | 2.22 | Roger Craig | 69.7 | SLN |
| +043+ | 1.9 | Hank Fischer | 83 | ATL |
| +047+ | 1.82 | Ron Herbel | 61.3 | SFN |
| +052+ | 1.7 | Ken Johnson | 99.3 | HOU |
| +054+ | 1.65 | Juan Marichal | 116.3 | SFN |
| +056+ | 1.63 | Sam McDowell | 38 | CLE |
| +060+ | 1.5 | Dennis Bennett | 97.7 | PHI |
| +062+ | 1.42 | Claude Osteen | 98.7 | TEX |
| +064+ | 1.39 | Curt Simmons | 91.7 | SLN |
| +069+ | 1.35 | Steve Hamilton | 29.7 | NYA |
| +072+ | 1.3 | Joe Moeller | 69 | LAN |
| +074+ | 1.27 | Vern Law | 86 | PIT |
| XXXXX | 1.14 | Gaylord Perry | 40 | SFN |
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