| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 20.4 | 196608090_LAN_ATL |
| Jim Bunning | PHI | 7.54 | 196608090_PHI_SLN |
| Gary Peters | CHA | 3.93 | 196608100_CHA_OAK |
| Al Jackson | SLN | 2.07 | 196608110_PHI_SLN |
| Jim Kaat | MIN | 1.47 | 196608110_MIN_ANA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Lonborg | BOS | -2.76 | 196608110_CLE_BOS |
| Fred Talbot | NYA | -2.24 | 196608100_BAL_NYA |
| Dick Ellsworth | CHN | -2.16 | 196608090_HOU_CHN |
| Bob Bruce | HOU | -1.52 | 196608111_HOU_CHN |
| Denny Lemaster | ATL | -0.73 | 196608090_LAN_ATL |
Based on accumulated WAA for this season up to 1966-08-11.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 10.28 | Sandy Koufax | 223.7 | LAN |
| +003+ | 7.39 | Juan Marichal | 207.7 | SFN |
| +007+ | 6.46 | Bob Gibson | 194.7 | SLN |
| +012+ | 5.58 | Jim Bunning | 210.3 | PHI |
| +013+ | 5.44 | Al Jackson | 175 | SLN |
| +016+ | 4.83 | Gary Peters | 151 | CHA |
| +018+ | 4.67 | Claude Osteen | 179.7 | LAN |
| +021+ | 4.41 | Joe Horlen | 146 | CHA |
| +022+ | 4.08 | Tommy John | 147 | CHA |
| +024+ | 3.9 | Mike Cuellar | 136.7 | HOU |
| +031+ | 3.57 | Steve Barber | 123.7 | BAL |
| +032+ | 3.41 | Jim Maloney | 169.7 | CIN |
| +038+ | 3.11 | Bruce Howard | 102.7 | CHA |
| +044+ | 2.91 | Jim Grant | 173.7 | MIN |
| +046+ | 2.8 | Jim Kaat | 199.3 | MIN |
| +049+ | 2.67 | Bob Veale | 171 | PIT |
| +051+ | 2.59 | Gaylord Perry | 162 | SFN |
| +056+ | 2.54 | Gary Bell | 183.7 | CLE |
| +055+ | 2.54 | Dennis Ribant | 129.3 | NYN |
| +057+ | 2.53 | Dave Boswell | 157 | MIN |
| +059+ | 2.5 | Dave McNally | 151.7 | BAL |
| +060+ | 2.45 | George Brunet | 154 | ANA |
| +071+ | 2.09 | Woodie Fryman | 128.7 | PIT |
| +070+ | 2.09 | Pete Richert | 189.7 | TEX |
| +075+ | 2 | Steve Hargan | 109.3 | CLE |
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