| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 8.01 | 196505050_LAN_CIN |
| Chris Short | PHI | 5.55 | 196505070_SLN_PHI |
| Camilo Pascual | MIN | 3.42 | 196505050_BAL_MIN |
| Whitey Ford | NYA | 3.27 | 196505050_NYA_CLE |
| Dean Chance | ANA | 3.08 | 196505071_OAK_ANA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bob Hendley | SFN | -1.77 | 196505050_SFN_SLN |
| Earl Wilson | BOS | -1.66 | 196505070_CLE_BOS |
| Lew Burdette | CHN | -1.64 | 196505070_HOU_CHN |
| Tracy Stallard | SLN | -1.57 | 196505050_SFN_SLN |
| Orlando Pena | OAK | -1.46 | 196505060_OAK_ANA |
Based on accumulated WAA for this season up to 1965-05-07.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.31 | Juan Marichal | 51 | SFN |
| +002+ | 2.34 | John Buzhardt | 36 | CHA |
| +005+ | 2.04 | Claude Osteen | 52 | LAN |
| +006+ | 1.98 | Chris Short | 48 | PHI |
| +007+ | 1.76 | Ralph Terry | 38 | CLE |
| +010+ | 1.51 | Joe Horlen | 31 | CHA |
| +011+ | 1.51 | Turk Farrell | 40.3 | HOU |
| +012+ | 1.5 | Sandy Koufax | 38 | LAN |
| +013+ | 1.46 | Jim Kaat | 42.7 | MIN |
| +014+ | 1.38 | Marcelino Lopez | 39 | ANA |
| +015+ | 1.34 | Rudy May | 26 | ANA |
| +018+ | 1.29 | Johnny Podres | 28 | LAN |
| XXXXX | 1.19 | Bob Veale | 36 | PIT |
| XXXXX | 1.09 | Dave Giusti | 29.7 | HOU |
| XXXXX | 1.09 | Robin Roberts | 38 | BAL |
| XXXXX | 1.09 | Bob Gibson | 47.3 | SLN |
| XXXXX | 1 | Hank Aguirre | 22.3 | DET |
| XXXXX | 0.99 | Camilo Pascual | 37 | MIN |
| XXXXX | 0.92 | Mel Stottlemyre | 38 | NYA |
| XXXXX | 0.89 | Bruce Howard | 21 | CHA |
| XXXXX | 0.81 | Sammy Ellis | 40.3 | CIN |
| XXXXX | 0.81 | Warren Spahn | 41.3 | NYN |
| XXXXX | 0.77 | Vern Law | 28.7 | PIT |
| XXXXX | 0.73 | Bob Buhl | 33 | CHN |
| XXXXX | 0.71 | Ron Herbel | 23 | SFN |
_