| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 11.64 | 196606100_LAN_SFN |
| Jim Bunning | PHI | 10.68 | 196606110_SLN_PHI |
| Juan Marichal | SFN | 9.2 | 196606120_LAN_SFN |
| Mel Stottlemyre | NYA | 6.04 | 196606121_NYA_DET |
| Jim Maloney | CIN | 5.67 | 196606100_CIN_NYN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Fisher | NYN | -1.96 | 196606120_CIN_NYN |
| Earl Wilson | BOS | -1.85 | 196606120_BOS_BAL |
| Denny Lemaster | ATL | -1.52 | 196606120_ATL_PIT |
| Fred Talbot | NYA | -1.38 | 196606122_NYA_DET |
| Turk Farrell | HOU | -0.63 | 196606100_CHN_HOU |
Based on accumulated WAA for this season up to 1966-06-12.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.14 | Sandy Koufax | 109.3 | LAN |
| +003+ | 4.44 | Jim Bunning | 113.7 | PHI |
| +004+ | 4.36 | Juan Marichal | 120 | SFN |
| +006+ | 3.63 | Bob Gibson | 118 | SLN |
| +008+ | 3.42 | Mike Cuellar | 62.3 | HOU |
| +012+ | 2.74 | Tommy John | 87.3 | CHA |
| +016+ | 2.48 | Claude Osteen | 99.7 | LAN |
| +017+ | 2.48 | Al Jackson | 62 | SLN |
| +020+ | 2.3 | Mel Stottlemyre | 105.3 | NYA |
| +022+ | 2.2 | Dennis Ribant | 54.3 | NYN |
| +023+ | 2.16 | Sam McDowell | 74.7 | CLE |
| +026+ | 1.97 | Phil Ortega | 84.3 | TEX |
| +027+ | 1.92 | Dick Ellsworth | 97.7 | CHN |
| +028+ | 1.9 | Jim Maloney | 73.7 | CIN |
| +029+ | 1.88 | Don Nottebart | 34 | CIN |
| +035+ | 1.75 | Jim Kaat | 94 | MIN |
| +040+ | 1.66 | Chris Short | 110.3 | PHI |
| +042+ | 1.64 | Steve Barber | 74.7 | BAL |
| +044+ | 1.62 | Pete Richert | 106 | TEX |
| +050+ | 1.49 | Ralph Terry | 42.3 | OAK |
| +052+ | 1.48 | Gary Bell | 87.7 | CLE |
| +056+ | 1.38 | Luis Tiant | 56.3 | CLE |
| +059+ | 1.33 | Gary Peters | 69 | CHA |
| +064+ | 1.3 | Whitey Ford | 40 | NYA |
| +067+ | 1.28 | Hank Aguirre | 47.7 | DET |
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