| Starter | Tm | Tier | Game |
|---|---|---|---|
| Whitey Ford | NYA | 12.06 | 196406070_NYA_ANA |
| Don Drysdale | LAN | 8.17 | 196406071_LAN_NYN |
| Juan Marichal | SFN | 5.65 | 196406090_SLN_SFN |
| Juan Pizarro | CHA | 4.89 | 196406090_BAL_CHA |
| Turk Farrell | HOU | 2.93 | 196406091_ATL_HOU |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Moe Drabowsky | OAK | -2.97 | 196406080_OAK_TEX |
| Ray Sadecki | SLN | -2.39 | 196406090_SLN_SFN |
| Barry Latman | ANA | -1.51 | 196406080_ANA_CLE |
| Phil Regan | DET | -1.29 | 196406071_DET_CHA |
| Al Jackson | NYN | -1.27 | 196406091_CHN_NYN |
Based on accumulated WAA for this season up to 1964-06-09.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 4.24 | Whitey Ford | 101.3 | NYA |
| +003+ | 3.66 | Robin Roberts | 84 | BAL |
| +004+ | 3.56 | Don Drysdale | 113.3 | LAN |
| +006+ | 3.23 | Jim Bunning | 85.7 | PHI |
| +007+ | 3.13 | Bob Gibson | 83 | SLN |
| +009+ | 3.01 | Juan Marichal | 105.3 | SFN |
| +011+ | 2.92 | Juan Pizarro | 70.7 | CHA |
| +013+ | 2.89 | Dean Chance | 65 | ANA |
| +014+ | 2.87 | Chris Short | 49 | PHI |
| +020+ | 2.6 | Jack Kralick | 77.3 | CLE |
| +023+ | 2.51 | Sandy Koufax | 89.7 | LAN |
| +029+ | 2.21 | Jim Maloney | 82 | CIN |
| +032+ | 2.04 | Dennis Bennett | 89 | PHI |
| +033+ | 2.03 | Turk Farrell | 80.7 | HOU |
| +037+ | 1.92 | Roger Craig | 64 | SLN |
| +039+ | 1.89 | Bob Lee | 53 | ANA |
| +041+ | 1.81 | Hank Fischer | 77 | ATL |
| +043+ | 1.77 | John Buzhardt | 59.7 | CHA |
| +046+ | 1.63 | Phil Ortega | 70.7 | LAN |
| +050+ | 1.53 | Ken Johnson | 84.7 | HOU |
| +053+ | 1.49 | Galen Cisco | 66.3 | NYN |
| +057+ | 1.38 | Steve Blass | 40.7 | PIT |
| +064+ | 1.3 | Jim Bouton | 80.7 | NYA |
| +065+ | 1.29 | Joe Moeller | 63.7 | LAN |
| +066+ | 1.28 | Bob Bruce | 57 | HOU |
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