| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 12.35 | 196606140_HOU_LAN |
| Jim Bunning | PHI | 10.63 | 196606151_PHI_CIN |
| Juan Marichal | SFN | 10.06 | 196606160_HOU_SFN |
| Bob Gibson | SLN | 5.56 | 196606150_PIT_SLN |
| Sam McDowell | CLE | 4.91 | 196606160_CLE_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Denny Lemaster | ATL | -2.37 | 196606150_NYN_ATL |
| Bill Monbouquette | DET | -1.97 | 196606140_TEX_DET |
| Fred Talbot | NYA | -1.89 | 196606160_CLE_NYA |
| Sammy Ellis | CIN | -1.84 | 196606160_PHI_CIN |
| Bob Hendley | CHN | -1.29 | 196606160_CHN_LAN |
Based on accumulated WAA for this season up to 1966-06-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 5.28 | Sandy Koufax | 117.3 | LAN |
| +003+ | 5.25 | Juan Marichal | 129 | SFN |
| +004+ | 4.54 | Bob Gibson | 127 | SLN |
| +006+ | 4.19 | Jim Bunning | 118.7 | PHI |
| +009+ | 3.49 | Mike Cuellar | 67.3 | HOU |
| +012+ | 2.88 | Tommy John | 87.3 | CHA |
| +015+ | 2.74 | Jim Maloney | 82.7 | CIN |
| +017+ | 2.49 | Mel Stottlemyre | 105.3 | NYA |
| +019+ | 2.42 | Pete Richert | 114 | TEX |
| +021+ | 2.41 | Phil Ortega | 93.3 | TEX |
| +022+ | 2.36 | Claude Osteen | 104.7 | LAN |
| +027+ | 2.25 | Al Jackson | 68.3 | SLN |
| +028+ | 2.17 | Don Nottebart | 37 | CIN |
| +029+ | 2.16 | Dennis Ribant | 60.7 | NYN |
| +031+ | 2.1 | Dick Ellsworth | 97.7 | CHN |
| +040+ | 1.84 | Jim Kaat | 98.7 | MIN |
| +041+ | 1.83 | Joe Horlen | 76.7 | CHA |
| +043+ | 1.76 | Steve Barber | 74.7 | BAL |
| +050+ | 1.62 | Gary Bell | 87.7 | CLE |
| +051+ | 1.57 | Sam McDowell | 79 | CLE |
| +052+ | 1.54 | Jack Lamabe | 49 | CHA |
| +054+ | 1.53 | Clay Carroll | 52.7 | ATL |
| +057+ | 1.51 | Chris Short | 119.3 | PHI |
| +059+ | 1.49 | Juan Pizarro | 40.3 | CHA |
| +062+ | 1.4 | Hank Aguirre | 48.3 | DET |
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