| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 19.16 | 196608010_LAN_PIT |
| Bob Gibson | SLN | 7.45 | 196608020_CIN_SLN |
| Jim Maloney | CIN | 3.36 | 196608030_CIN_SLN |
| Bob Veale | PIT | 2.71 | 196608030_LAN_PIT |
| Sonny Siebert | CLE | 2.15 | 196608030_BAL_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ray Sadecki | SFN | -2.54 | 196608020_SFN_NYN |
| Tony Cloninger | ATL | -1.78 | 196608020_ATL_CHN |
| Fred Talbot | NYA | -1.72 | 196608010_NYA_ANA |
| Ray Culp | PHI | -1.36 | 196608010_HOU_PHI |
| Ron Taylor | HOU | -1.01 | 196608020_HOU_PHI |
Based on accumulated WAA for this season up to 1966-08-03.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.46 | Sandy Koufax | 209.3 | LAN |
| +004+ | 7.12 | Juan Marichal | 199.7 | SFN |
| +008+ | 5.8 | Bob Gibson | 186.3 | SLN |
| +011+ | 5.12 | Jim Bunning | 194.7 | PHI |
| +012+ | 4.95 | Claude Osteen | 175.3 | LAN |
| +014+ | 4.85 | Al Jackson | 159.7 | SLN |
| +018+ | 4.53 | Joe Horlen | 141 | CHA |
| +020+ | 3.88 | Jim Maloney | 164.7 | CIN |
| +021+ | 3.84 | Mike Cuellar | 129.7 | HOU |
| +022+ | 3.68 | Gary Peters | 133.3 | CHA |
| +025+ | 3.44 | Steve Barber | 123.7 | BAL |
| +024+ | 3.44 | Bob Veale | 167 | PIT |
| +031+ | 3.23 | Tommy John | 138 | CHA |
| +042+ | 2.85 | Dennis Ribant | 117 | NYN |
| +047+ | 2.75 | Gaylord Perry | 156 | SFN |
| +049+ | 2.72 | Bruce Howard | 96.3 | CHA |
| +051+ | 2.68 | George Brunet | 143 | ANA |
| +052+ | 2.63 | Jim Kaat | 180 | MIN |
| +057+ | 2.25 | Sonny Siebert | 170 | CLE |
| +058+ | 2.23 | Mel Stottlemyre | 183 | NYA |
| +063+ | 2.15 | Dave Boswell | 152 | MIN |
| +066+ | 2.08 | Ken Johnson | 153.3 | ATL |
| +073+ | 1.86 | Jim O'Toole | 89 | CIN |
| +074+ | 1.85 | Gary Bell | 167.7 | CLE |
| +081+ | 1.71 | Dave McNally | 138.7 | BAL |
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