| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 17.36 | 196607230_NYN_LAN |
| Juan Marichal | SFN | 11.11 | 196607250_PIT_SFN |
| Bob Gibson | SLN | 6.96 | 196607230_SLN_CHN |
| Jim Bunning | PHI | 4.71 | 196607230_PHI_SFN |
| Jim Maloney | CIN | 4.19 | 196607241_ATL_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sammy Ellis | CIN | -3.63 | 196607242_ATL_CIN |
| Tony Cloninger | ATL | -1.34 | 196607241_ATL_CIN |
| Bob Buhl | PHI | -1.09 | 196607240_PHI_SFN |
| Joe Sparma | DET | -0.87 | 196607230_DET_CLE |
| Phil Ortega | TEX | -0.82 | 196607242_OAK_TEX |
Based on accumulated WAA for this season up to 1966-07-25.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.34 | Sandy Koufax | 191.3 | LAN |
| +003+ | 6.95 | Juan Marichal | 198.3 | SFN |
| +006+ | 5.99 | Bob Gibson | 172.3 | SLN |
| +010+ | 5.07 | Claude Osteen | 164.7 | LAN |
| +015+ | 3.89 | Jim Bunning | 174.7 | PHI |
| +017+ | 3.87 | Joe Horlen | 126 | CHA |
| +018+ | 3.86 | Al Jackson | 134.3 | SLN |
| +019+ | 3.82 | Mike Cuellar | 120.3 | HOU |
| +020+ | 3.72 | Steve Barber | 122.7 | BAL |
| +025+ | 3.17 | Jim Kaat | 171.7 | MIN |
| +028+ | 2.96 | Jim Maloney | 145 | CIN |
| +030+ | 2.9 | Gary Peters | 124.3 | CHA |
| +036+ | 2.71 | Dennis Ribant | 108 | NYN |
| +038+ | 2.65 | Bob Veale | 158 | PIT |
| +040+ | 2.58 | Gaylord Perry | 131 | SFN |
| +041+ | 2.56 | Woodie Fryman | 110.7 | PIT |
| +048+ | 2.44 | Tommy John | 129 | CHA |
| +052+ | 2.37 | Sonny Siebert | 154.3 | CLE |
| +056+ | 2.24 | Bruce Howard | 80.7 | CHA |
| +057+ | 2.21 | George Brunet | 130 | ANA |
| +062+ | 2.15 | Ray Washburn | 98.7 | SLN |
| +064+ | 2.12 | Sam McDowell | 102.7 | CLE |
| +068+ | 2.01 | Lew Krausse | 87.3 | OAK |
| +072+ | 1.93 | Mel Stottlemyre | 170 | NYA |
| +076+ | 1.84 | Ken Johnson | 137.3 | ATL |
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