| Starter | Tm | Tier | Game |
|---|---|---|---|
| Juan Marichal | SFN | 9.81 | 196605221_NYN_SFN |
| Sandy Koufax | LAN | 6.47 | 196605230_PIT_LAN |
| Jim Bunning | PHI | 6.33 | 196605220_PHI_HOU |
| Mel Stottlemyre | NYA | 4.68 | 196605221_MIN_NYA |
| Bob Gibson | SLN | 2.45 | 196605220_SLN_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Earl Wilson | BOS | -3.16 | 196605220_OAK_BOS |
| Bob Buhl | PHI | -2.43 | 196605240_PHI_LAN |
| Ernie Broglio | CHN | -2.22 | 196605222_CHN_ATL |
| Jack Fisher | NYN | -2.14 | 196605240_NYN_HOU |
| Wade Blasingame | ATL | -2.02 | 196605221_CHN_ATL |
Based on accumulated WAA for this season up to 1966-05-24.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.37 | Juan Marichal | 78 | SFN |
| +007+ | 2.36 | Sandy Koufax | 73.3 | LAN |
| +009+ | 2.27 | Jim Maloney | 43.7 | CIN |
| +010+ | 2.19 | Mike Cuellar | 46.3 | HOU |
| +013+ | 1.94 | Chris Short | 71.7 | PHI |
| +015+ | 1.89 | Mel Stottlemyre | 71 | NYA |
| +016+ | 1.87 | Al Jackson | 33 | SLN |
| +017+ | 1.79 | Jim Bunning | 69.7 | PHI |
| +020+ | 1.72 | Bob Gibson | 75.3 | SLN |
| +025+ | 1.43 | Clay Carroll | 30.3 | ATL |
| +026+ | 1.43 | Sam McDowell | 66.7 | CLE |
| +027+ | 1.42 | Tommy John | 51.7 | CHA |
| +028+ | 1.4 | Pete Richert | 68 | TEX |
| +029+ | 1.35 | Jim O'Toole | 34.3 | CIN |
| +032+ | 1.32 | John O'Donoghue | 18.3 | CLE |
| XXXXX | 1.25 | Luis Tiant | 43.7 | CLE |
| XXXXX | 1.23 | Claude Osteen | 72.3 | LAN |
| XXXXX | 1.21 | Jim Grant | 59 | MIN |
| XXXXX | 1.19 | Whitey Ford | 40 | NYA |
| XXXXX | 1.14 | Denny McLain | 65 | DET |
| XXXXX | 1.11 | Dick Ellsworth | 59.7 | CHN |
| XXXXX | 0.99 | Sonny Siebert | 54.7 | CLE |
| XXXXX | 0.99 | Jose Santiago | 50 | BOS |
| XXXXX | 0.95 | Jim Kaat | 55.7 | MIN |
| XXXXX | 0.94 | Dean Chance | 65.7 | ANA |
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