| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 12.39 | 196606180_SFN_LAN |
| Juan Marichal | SFN | 10.06 | 196606160_HOU_SFN |
| Jim Maloney | CIN | 5.53 | 196606180_NYN_CIN |
| Mel Stottlemyre | NYA | 5.26 | 196606170_DET_NYA |
| Sam McDowell | CLE | 4.91 | 196606160_CLE_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Diego Segui | TEX | -2.53 | 196606170_CLE_TEX |
| Wade Blasingame | ATL | -2.44 | 196606180_PIT_ATL |
| Fred Talbot | NYA | -1.89 | 196606160_CLE_NYA |
| Sammy Ellis | CIN | -1.84 | 196606160_PHI_CIN |
| Earl Wilson | DET | -1.73 | 196606170_DET_NYA |
Based on accumulated WAA for this season up to 1966-06-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.68 | Sandy Koufax | 126.3 | LAN |
| +003+ | 5.37 | Juan Marichal | 129 | SFN |
| +006+ | 4.63 | Bob Gibson | 127 | SLN |
| +008+ | 4.3 | Jim Bunning | 118.7 | PHI |
| +009+ | 3.55 | Mike Cuellar | 67.3 | HOU |
| +010+ | 3.47 | Tommy John | 96.3 | CHA |
| +013+ | 2.89 | Mel Stottlemyre | 114.3 | NYA |
| +016+ | 2.67 | Jim Maloney | 91.3 | CIN |
| +017+ | 2.62 | Al Jackson | 77.3 | SLN |
| +022+ | 2.47 | Pete Richert | 114 | TEX |
| +025+ | 2.45 | Claude Osteen | 104.7 | LAN |
| +029+ | 2.22 | Dennis Ribant | 60.7 | NYN |
| +030+ | 2.19 | Phil Ortega | 100.3 | TEX |
| +031+ | 2.18 | Dick Ellsworth | 97.7 | CHN |
| +039+ | 1.91 | Jim Kaat | 98.7 | MIN |
| +040+ | 1.9 | Joe Horlen | 76.7 | CHA |
| +047+ | 1.74 | Steve Barber | 81.7 | BAL |
| +051+ | 1.63 | Chris Short | 119.3 | PHI |
| +050+ | 1.63 | Sam McDowell | 79 | CLE |
| +053+ | 1.61 | Gary Bell | 94.7 | CLE |
| +055+ | 1.53 | Juan Pizarro | 40.3 | CHA |
| +061+ | 1.44 | Hank Aguirre | 53.3 | DET |
| +063+ | 1.42 | Clay Carroll | 56 | ATL |
| +064+ | 1.4 | Whitey Ford | 40 | NYA |
| +071+ | 1.34 | Gaylord Perry | 72.7 | SFN |
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