| Starter | Tm | Tier | Game |
|---|---|---|---|
| Whitey Ford | NYA | 10.12 | 196405300_NYA_OAK |
| Don Drysdale | LAN | 7.29 | 196405300_LAN_PIT |
| Juan Pizarro | CHA | 5.59 | 196405280_CHA_OAK |
| Robin Roberts | BAL | 3.64 | 196405290_BAL_ANA |
| Curt Simmons | SLN | 2.92 | 196405280_SFN_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Glen Hobbie | CHN | -3.38 | 196405290_ATL_CHN |
| Jack Fisher | NYN | -3.15 | 196405300_SFN_NYN |
| Ray Sadecki | SLN | -2.66 | 196405290_CIN_SLN |
| Moe Drabowsky | OAK | -1.41 | 196405300_NYA_OAK |
| Don Nottebart | HOU | -0.4 | 196405300_HOU_PHI |
Based on accumulated WAA for this season up to 1964-05-30.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 3.6 | Whitey Ford | 85.3 | NYA |
| +004+ | 3.03 | Chris Short | 42.3 | PHI |
| +005+ | 2.93 | Juan Pizarro | 50.7 | CHA |
| +006+ | 2.88 | Robin Roberts | 74.7 | BAL |
| +010+ | 2.61 | Juan Marichal | 81.3 | SFN |
| +012+ | 2.45 | Jim Bunning | 67.3 | PHI |
| +014+ | 2.39 | Turk Farrell | 67.3 | HOU |
| +017+ | 2.31 | Bob Gibson | 66 | SLN |
| +018+ | 2.3 | Don Drysdale | 94 | LAN |
| +020+ | 2.23 | Phil Ortega | 64.3 | LAN |
| +022+ | 2.22 | Curt Simmons | 72.3 | SLN |
| +023+ | 2.14 | Jack Kralick | 60.3 | CLE |
| +025+ | 2.11 | Jim Maloney | 68.3 | CIN |
| +026+ | 1.98 | Dennis Bennett | 74 | PHI |
| +029+ | 1.89 | John Buzhardt | 48.3 | CHA |
| +033+ | 1.81 | Bob Lee | 46 | ANA |
| +034+ | 1.76 | Ken Johnson | 74.7 | HOU |
| +035+ | 1.75 | Wally Bunker | 41 | BAL |
| +039+ | 1.62 | Bob Bruce | 51 | HOU |
| +043+ | 1.41 | Sandy Koufax | 64.7 | LAN |
| +046+ | 1.37 | Hank Fischer | 59 | ATL |
| +056+ | 1.28 | Jim Duckworth | 24.3 | TEX |
| +057+ | 1.27 | Willie Smith | 27.3 | ANA |
| XXXXX | 1.25 | Milt Pappas | 62.7 | BAL |
| XXXXX | 1.21 | Galen Cisco | 42.3 | NYN |
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