| Starter | Tm | Tier | Game |
|---|---|---|---|
| Juan Marichal | SFN | 9 | 196605170_SFN_LAN |
| Jim Bunning | PHI | 6.6 | 196605180_SLN_PHI |
| Sam McDowell | CLE | 6.36 | 196605170_TEX_CLE |
| Jim Maloney | CIN | 4.3 | 196605170_CIN_NYN |
| Mel Stottlemyre | NYA | 3.85 | 196605180_NYA_DET |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Earl Wilson | BOS | -3.85 | 196605180_BOS_BAL |
| Diego Segui | TEX | -3.2 | 196605170_TEX_CLE |
| Ernie Broglio | CHN | -2.26 | 196605181_HOU_CHN |
| Wade Blasingame | ATL | -1.59 | 196605170_ATL_PIT |
| Sammy Ellis | CIN | -0.89 | 196605180_CIN_NYN |
Based on accumulated WAA for this season up to 1966-05-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.66 | Juan Marichal | 69 | SFN |
| +004+ | 2.32 | Sam McDowell | 65.7 | CLE |
| +010+ | 1.92 | Chris Short | 65.7 | PHI |
| +011+ | 1.91 | Mel Stottlemyre | 63 | NYA |
| +012+ | 1.85 | Mike Cuellar | 41.7 | HOU |
| +013+ | 1.84 | Dick Ellsworth | 55.7 | CHN |
| +014+ | 1.8 | Jim Maloney | 34.7 | CIN |
| +015+ | 1.54 | Denny McLain | 56.7 | DET |
| +018+ | 1.48 | Don Sutton | 61 | LAN |
| +020+ | 1.47 | Sandy Koufax | 55.3 | LAN |
| +025+ | 1.34 | Jim Bunning | 60.7 | PHI |
| +027+ | 1.31 | Pete Richert | 63 | TEX |
| +030+ | 1.29 | Jim O'Toole | 28 | CIN |
| XXXXX | 1.23 | Clay Carroll | 27.7 | ATL |
| XXXXX | 1.21 | Bob Gibson | 66.3 | SLN |
| XXXXX | 1.21 | Barry Latman | 38.7 | HOU |
| XXXXX | 1.19 | Denny Lemaster | 44 | ATL |
| XXXXX | 1.11 | Luis Tiant | 30.7 | CLE |
| XXXXX | 1.11 | Whitey Ford | 39 | NYA |
| XXXXX | 1.08 | Phil Ortega | 38.3 | TEX |
| XXXXX | 1.07 | Jim Grant | 52.3 | MIN |
| XXXXX | 1.07 | Al Jackson | 17 | SLN |
| XXXXX | 1.04 | Claude Osteen | 66.3 | LAN |
| XXXXX | 0.89 | Camilo Pascual | 50 | MIN |
| XXXXX | 0.89 | Tommy John | 44.7 | CHA |
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