| Starter | Tm | Tier | Game |
|---|---|---|---|
| Don Drysdale | LAN | 9.37 | 196407170_CHN_LAN |
| Whitey Ford | NYA | 9.14 | 196407150_BAL_NYA |
| Dean Chance | ANA | 4.84 | 196407152_DET_ANA |
| Bob Gibson | SLN | 4.08 | 196407150_LAN_SLN |
| Jim Bunning | PHI | 4.03 | 196407150_PHI_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Moe Drabowsky | OAK | -4.32 | 196407170_OAK_CHA |
| Mudcat Grant | MIN | -2.29 | 196407150_TEX_MIN |
| Phil Regan | DET | -2.27 | 196407152_DET_ANA |
| Tracy Stallard | NYN | -2.17 | 196407160_NYN_CHN |
| Lee Stange | CLE | -1.72 | 196407152_CLE_OAK |
Based on accumulated WAA for this season up to 1964-07-17.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 5.65 | Sandy Koufax | 153.7 | LAN |
| +003+ | 5.22 | Don Drysdale | 184.3 | LAN |
| +004+ | 5.18 | Dean Chance | 129.3 | ANA |
| +006+ | 5.1 | Whitey Ford | 159 | NYA |
| +007+ | 5.04 | Jim Bunning | 150.7 | PHI |
| +012+ | 4.07 | Juan Pizarro | 131.7 | CHA |
| +016+ | 3.78 | Chris Short | 101.3 | PHI |
| +021+ | 3.58 | Juan Marichal | 165.7 | SFN |
| +022+ | 3.57 | Gary Peters | 143 | CHA |
| +028+ | 3.3 | Joe Horlen | 93 | CHA |
| +032+ | 2.99 | Ron Herbel | 107.7 | SFN |
| +034+ | 2.97 | Bob Gibson | 139.7 | SLN |
| +033+ | 2.97 | Jack Kralick | 130.7 | CLE |
| +038+ | 2.83 | Robin Roberts | 130 | BAL |
| +046+ | 2.5 | Jim Maloney | 132 | CIN |
| +048+ | 2.37 | Roger Craig | 110.7 | SLN |
| +050+ | 2.35 | Gaylord Perry | 82 | SFN |
| +054+ | 2.26 | Fred Newman | 97 | ANA |
| +056+ | 2.2 | Bob Bruce | 109.3 | HOU |
| +060+ | 2.14 | Dick Ellsworth | 158.7 | CHN |
| +066+ | 2.03 | Jim O'Toole | 109 | CIN |
| +069+ | 2.01 | Bobby Bolin | 90.7 | SFN |
| +075+ | 1.84 | Hank Fischer | 104.7 | ATL |
| +076+ | 1.82 | Bo Belinsky | 99.3 | ANA |
| +081+ | 1.69 | John Buzhardt | 96.3 | CHA |
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