| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 20.47 | 196608130_CHN_LAN |
| Juan Marichal | SFN | 10.32 | 196608130_HOU_SFN |
| Bob Gibson | SLN | 7.43 | 196608130_NYN_SLN |
| Jim Bunning | PHI | 7.05 | 196608131_PHI_ATL |
| Joe Horlen | CHA | 4.24 | 196608130_ANA_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sammy Ellis | CIN | -3.53 | 196608120_PIT_CIN |
| Jim Lonborg | BOS | -2.76 | 196608110_CLE_BOS |
| Dick Ellsworth | CHN | -2.28 | 196608130_CHN_LAN |
| Bob Bruce | HOU | -1.52 | 196608111_HOU_CHN |
| Bill Monbouquette | DET | -1.33 | 196608120_DET_BOS |
Based on accumulated WAA for this season up to 1966-08-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 10.84 | Sandy Koufax | 232.7 | LAN |
| +004+ | 7.53 | Juan Marichal | 216.7 | SFN |
| +009+ | 6.18 | Bob Gibson | 203.7 | SLN |
| +010+ | 5.91 | Jim Bunning | 219 | PHI |
| +013+ | 5.46 | Al Jackson | 175 | SLN |
| +016+ | 4.85 | Gary Peters | 151 | CHA |
| +017+ | 4.84 | Tommy John | 156 | CHA |
| +019+ | 4.68 | Claude Osteen | 179.7 | LAN |
| +022+ | 4.39 | Mike Cuellar | 144.7 | HOU |
| +024+ | 3.85 | Jim Maloney | 174.7 | CIN |
| +026+ | 3.7 | Joe Horlen | 147.3 | CHA |
| +030+ | 3.6 | Steve Barber | 123.7 | BAL |
| +033+ | 3.35 | Gaylord Perry | 171 | SFN |
| +040+ | 3.12 | Bruce Howard | 102.7 | CHA |
| +043+ | 2.92 | Jim Grant | 173.7 | MIN |
| +046+ | 2.81 | Jim Kaat | 199.3 | MIN |
| +047+ | 2.78 | Gary Bell | 191.3 | CLE |
| +051+ | 2.56 | Dennis Ribant | 129.3 | NYN |
| +053+ | 2.55 | Steve Hargan | 118.3 | CLE |
| +054+ | 2.54 | Dave Boswell | 157 | MIN |
| +055+ | 2.53 | Dave McNally | 151.7 | BAL |
| +058+ | 2.47 | George Brunet | 154 | ANA |
| +065+ | 2.37 | Pete Richert | 197.7 | TEX |
| +074+ | 2.16 | Jim Perry | 113.3 | MIN |
| +081+ | 1.92 | Bob Veale | 177 | PIT |
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