| Starter | Tm | Tier | Game |
|---|---|---|---|
| Juan Marichal | SFN | 15.11 | 196509021_SFN_PHI |
| Sam McDowell | CLE | 5.97 | 196509040_CLE_BAL |
| Milt Pappas | BAL | 4.27 | 196509022_CHA_BAL |
| Jim Bunning | PHI | 3.38 | 196509040_PHI_CIN |
| George Brunet | ANA | 2.29 | 196509031_OAK_ANA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ray Sadecki | SLN | -6.12 | 196509030_NYN_SLN |
| Jim O'Toole | CIN | -4.66 | 196509030_PHI_CIN |
| Bob Hendley | CHN | -3.6 | 196509020_SLN_CHN |
| Jim Bouton | NYA | -2.7 | 196509041_BOS_NYA |
| Dave Morehead | BOS | -1.33 | 196509041_BOS_NYA |
Based on accumulated WAA for this season up to 1965-09-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.54 | Juan Marichal | 244 | SFN |
| +002+ | 8.56 | Sandy Koufax | 274.7 | LAN |
| +005+ | 7.43 | Sam McDowell | 223.3 | CLE |
| +007+ | 7.04 | Vern Law | 208.3 | PIT |
| +016+ | 5.21 | Bob Shaw | 194.3 | SFN |
| +017+ | 5.11 | Sonny Siebert | 143.3 | CLE |
| +018+ | 4.98 | Mel Stottlemyre | 241 | NYA |
| +025+ | 4.69 | Jim Maloney | 208.3 | CIN |
| +028+ | 4.62 | Jim Bunning | 239 | PHI |
| +033+ | 4.42 | Milt Pappas | 184.3 | BAL |
| +034+ | 4.31 | George Brunet | 164.7 | ANA |
| +046+ | 3.72 | Jim Kaat | 223 | MIN |
| +047+ | 3.48 | Don Drysdale | 261.3 | LAN |
| +050+ | 3.41 | Denny McLain | 186.3 | DET |
| +053+ | 3.31 | Marcelino Lopez | 202.3 | ANA |
| +056+ | 3.16 | Jim Perry | 133.3 | MIN |
| +057+ | 3.11 | Claude Osteen | 234 | LAN |
| +060+ | 3.01 | Pete Richert | 149.7 | TEX |
| +064+ | 2.93 | Bob Gibson | 244.7 | SLN |
| +074+ | 2.73 | Al McBean | 99.7 | PIT |
| +081+ | 2.51 | Bobby Bolin | 121.3 | SFN |
| +083+ | 2.43 | Joe Horlen | 185.3 | CHA |
| +084+ | 2.42 | Bob Veale | 221 | PIT |
| +086+ | 2.35 | Steve Barber | 172 | BAL |
| +087+ | 2.33 | Robin Roberts | 156 | TOT |
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