| Starter | Tm | Tier | Game |
|---|---|---|---|
| Whitey Ford | NYA | 11.57 | 196406030_NYA_MIN |
| Don Drysdale | LAN | 7.4 | 196406030_LAN_PHI |
| Robin Roberts | BAL | 3.76 | 196406030_BAL_OAK |
| Turk Farrell | HOU | 3.37 | 196406040_HOU_NYN |
| Bob Gibson | SLN | 3.35 | 196406040_SLN_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ray Sadecki | SLN | -2.38 | 196406030_SLN_CHN |
| Sam McDowell | CLE | -1.43 | 196406020_CHA_CLE |
| Dave McNally | BAL | -1.05 | 196406020_BAL_OAK |
| Al Jackson | NYN | -1.04 | 196406040_HOU_NYN |
| Fred Newman | ANA | -0.73 | 196406031_BOS_ANA |
Based on accumulated WAA for this season up to 1964-06-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 4.33 | Whitey Ford | 94.3 | NYA |
| +003+ | 3.57 | Robin Roberts | 84 | BAL |
| +005+ | 3.19 | Jim Bunning | 77.3 | PHI |
| +006+ | 3.07 | Bob Gibson | 83 | SLN |
| +007+ | 3.05 | Don Drysdale | 104.3 | LAN |
| +009+ | 2.89 | Chris Short | 49 | PHI |
| +010+ | 2.83 | Jack Kralick | 69.3 | CLE |
| +012+ | 2.77 | Juan Pizarro | 56.7 | CHA |
| +017+ | 2.43 | Juan Marichal | 90.3 | SFN |
| +024+ | 2.16 | Turk Farrell | 72.7 | HOU |
| +030+ | 2.01 | Sandy Koufax | 80.7 | LAN |
| +031+ | 2 | Jim Maloney | 75 | CIN |
| +032+ | 1.98 | Bob Lee | 48.7 | ANA |
| +033+ | 1.9 | Dennis Bennett | 82 | PHI |
| +036+ | 1.82 | John Buzhardt | 55.3 | CHA |
| +039+ | 1.78 | Hank Fischer | 67.3 | ATL |
| +041+ | 1.76 | Dean Chance | 51 | ANA |
| +042+ | 1.68 | Phil Ortega | 66 | LAN |
| +043+ | 1.62 | Roger Craig | 61 | SLN |
| +044+ | 1.6 | Ken Johnson | 81 | HOU |
| +045+ | 1.59 | Bob Bruce | 51 | HOU |
| +046+ | 1.56 | Curt Simmons | 77.7 | SLN |
| +055+ | 1.36 | Galen Cisco | 51.3 | NYN |
| +057+ | 1.31 | Wally Bunker | 46.3 | BAL |
| XXXXX | 1.25 | Jim Duckworth | 24.3 | TEX |
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