| Starter | Tm | Tier | Game |
|---|---|---|---|
| Whitey Ford | NYA | 13.2 | 196406162_BOS_NYA |
| Don Drysdale | LAN | 10.51 | 196406160_ATL_LAN |
| Robin Roberts | BAL | 5.43 | 196406150_CHA_BAL |
| Juan Pizarro | CHA | 4.53 | 196406141_CHA_NYA |
| Chris Short | PHI | 3.65 | 196406141_NYN_PHI |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Glen Hobbie | SLN | -2.62 | 196406150_SLN_HOU |
| Moe Drabowsky | OAK | -2.56 | 196406141_OAK_CLE |
| Jack Fisher | NYN | -2.4 | 196406160_NYN_PIT |
| Bennie Daniels | TEX | -2.13 | 196406160_ANA_TEX |
| Phil Regan | DET | -1.48 | 196406162_OAK_DET |
Based on accumulated WAA for this season up to 1964-06-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 5.17 | Whitey Ford | 117.3 | NYA |
| +003+ | 4.82 | Don Drysdale | 131.3 | LAN |
| +004+ | 3.57 | Jim Bunning | 94.7 | PHI |
| +007+ | 3.26 | Sandy Koufax | 98.7 | LAN |
| +010+ | 3.07 | Juan Pizarro | 81.7 | CHA |
| +012+ | 2.94 | Bob Gibson | 97 | SLN |
| +013+ | 2.92 | Chris Short | 62 | PHI |
| +016+ | 2.78 | Jim Maloney | 91 | CIN |
| +019+ | 2.72 | Juan Marichal | 111.3 | SFN |
| +022+ | 2.6 | Dean Chance | 79.3 | ANA |
| +023+ | 2.6 | Jack Kralick | 93.3 | CLE |
| +024+ | 2.59 | Turk Farrell | 89.7 | HOU |
| +025+ | 2.57 | Robin Roberts | 90.3 | BAL |
| +043+ | 1.94 | Roger Craig | 66 | SLN |
| +044+ | 1.92 | Hank Fischer | 83 | ATL |
| +047+ | 1.82 | Ron Herbel | 61.3 | SFN |
| +050+ | 1.76 | John Buzhardt | 61.7 | CHA |
| +058+ | 1.53 | Ken Johnson | 92 | HOU |
| +061+ | 1.51 | Dennis Bennett | 97.7 | PHI |
| +065+ | 1.45 | Dick Ellsworth | 112 | CHN |
| +064+ | 1.45 | Claude Osteen | 98.7 | TEX |
| +067+ | 1.43 | Curt Simmons | 91.7 | SLN |
| +069+ | 1.4 | Sam McDowell | 30 | CLE |
| +071+ | 1.37 | Steve Hamilton | 29.7 | NYA |
| +075+ | 1.31 | Joe Moeller | 69 | LAN |
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