| Starter | Tm | Tier | Game |
|---|---|---|---|
| Juan Marichal | SFN | 8.62 | 196506050_SFN_CIN |
| Sandy Koufax | LAN | 7.53 | 196506070_LAN_PHI |
| Bob Veale | PIT | 5.02 | 196506062_NYN_PIT |
| Jim Maloney | CIN | 4.07 | 196506050_SFN_CIN |
| Gary Peters | CHA | 3.53 | 196506050_CHA_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Al Jackson | NYN | -5.16 | 196506061_NYN_PIT |
| Ray Sadecki | SLN | -2.72 | 196506060_HOU_SLN |
| Earl Wilson | BOS | -2.62 | 196506050_BOS_OAK |
| Art Mahaffey | PHI | -2.09 | 196506062_PHI_CHN |
| Diego Segui | OAK | -1.36 | 196506050_BOS_OAK |
Based on accumulated WAA for this season up to 1965-06-07.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.99 | Juan Marichal | 98 | SFN |
| +002+ | 3.38 | Jim Kaat | 91 | MIN |
| +003+ | 3.34 | Marcelino Lopez | 89 | ANA |
| +006+ | 3.07 | Sandy Koufax | 101.3 | LAN |
| +007+ | 3.06 | Joe Horlen | 75.3 | CHA |
| +008+ | 3.05 | Don Drysdale | 108.7 | LAN |
| +013+ | 2.65 | Bob Veale | 89 | PIT |
| +014+ | 2.63 | Turk Farrell | 59.3 | HOU |
| +015+ | 2.54 | Bob Gibson | 101 | SLN |
| +016+ | 2.53 | Johnny Podres | 70 | LAN |
| +017+ | 2.46 | Vern Law | 60 | PIT |
| +018+ | 2.45 | Jim Maloney | 69 | CIN |
| +023+ | 2.24 | Camilo Pascual | 85 | MIN |
| +025+ | 2.16 | Milt Pappas | 65 | BAL |
| +036+ | 1.89 | Wade Blasingame | 75 | ATL |
| +039+ | 1.85 | Mel Stottlemyre | 90.3 | NYA |
| +045+ | 1.71 | Claude Osteen | 97.7 | LAN |
| +049+ | 1.67 | Dave Boswell | 44 | MIN |
| +050+ | 1.65 | George Brunet | 40.7 | ANA |
| +052+ | 1.6 | Sonny Siebert | 50 | CLE |
| +062+ | 1.47 | Sam McDowell | 72.7 | CLE |
| +076+ | 1.26 | Tracy Stallard | 68 | SLN |
| +077+ | 1.25 | Curt Simmons | 78 | SLN |
| XXXXX | 1.24 | Mickey Lolich | 77.3 | DET |
| XXXXX | 1.23 | Claude Raymond | 40 | HOU |
_