| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 20.11 | 196608300_LAN_NYN |
| Jim Bunning | PHI | 6.91 | 196608290_SFN_PHI |
| Al Jackson | SLN | 3.19 | 196608300_SLN_CIN |
| Mike Cuellar | HOU | 2.87 | 196608290_HOU_PIT |
| Tommy John | CHA | 2.87 | 196608290_CLE_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sammy Ellis | CIN | -5.47 | 196608300_SLN_CIN |
| Fred Talbot | NYA | -1.97 | 196608290_NYA_OAK |
| Ray Sadecki | SFN | -1.64 | 196608290_SFN_PHI |
| Bill Hands | CHN | -1.43 | 196608280_CHN_HOU |
| Joey Jay | ATL | -1.22 | 196608300_CHN_ATL |
Based on accumulated WAA for this season up to 1966-08-30.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 10.61 | Sandy Koufax | 257 | LAN |
| +006+ | 7.55 | Bob Gibson | 228.7 | SLN |
| +007+ | 7.42 | Juan Marichal | 236.7 | SFN |
| +008+ | 7.31 | Jim Bunning | 252 | PHI |
| +011+ | 6.78 | Gary Peters | 187 | CHA |
| +013+ | 5.75 | Mike Cuellar | 176.7 | HOU |
| +015+ | 5.59 | Tommy John | 182.7 | CHA |
| +022+ | 5.1 | Al Jackson | 199.3 | SLN |
| +023+ | 4.59 | Jim Kaat | 233.7 | MIN |
| +027+ | 4.48 | Jim Maloney | 187.3 | CIN |
| +033+ | 3.66 | Claude Osteen | 201 | LAN |
| +036+ | 3.59 | Bruce Howard | 115 | CHA |
| +039+ | 3.38 | Jim Perry | 144.7 | MIN |
| +041+ | 3.26 | Steve Hargan | 143 | CLE |
| +044+ | 3.19 | Jim Grant | 204.7 | MIN |
| +046+ | 3.1 | Joe Horlen | 170.3 | CHA |
| +047+ | 3.02 | Dennis Ribant | 157.7 | NYN |
| +055+ | 2.82 | Gaylord Perry | 201 | SFN |
| +062+ | 2.56 | Sonny Siebert | 213 | CLE |
| +067+ | 2.5 | Dave McNally | 178.3 | BAL |
| +069+ | 2.3 | Sam McDowell | 146.7 | CLE |
| +070+ | 2.29 | Bob Veale | 207 | PIT |
| +072+ | 2.28 | Gary Bell | 214.7 | CLE |
| +073+ | 2.21 | George Brunet | 184 | ANA |
| +075+ | 2.18 | Jim Nash | 86 | OAK |
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