| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 13.5 | 196606260_LAN_ATL |
| Jim Bunning | PHI | 9.79 | 196606240_PIT_PHI |
| Juan Marichal | SFN | 9.28 | 196606250_SFN_CIN |
| Jim Maloney | CIN | 5.01 | 196606260_SFN_CIN |
| Mel Stottlemyre | NYA | 4.29 | 196606250_CHA_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Wade Blasingame | ATL | -2.93 | 196606240_LAN_ATL |
| Sammy Ellis | CIN | -2.23 | 196606240_SFN_CIN |
| Fred Talbot | NYA | -1.93 | 196606261_CHA_NYA |
| Jim Hannan | TEX | -1.57 | 196606262_TEX_BOS |
| Jim Lonborg | BOS | -1.44 | 196606261_TEX_BOS |
Based on accumulated WAA for this season up to 1966-06-26.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.56 | Sandy Koufax | 144.3 | LAN |
| +002+ | 5.86 | Bob Gibson | 145 | SLN |
| +006+ | 5.14 | Juan Marichal | 147 | SFN |
| +007+ | 4.72 | Jim Bunning | 133.7 | PHI |
| +010+ | 3.56 | Mike Cuellar | 83.3 | HOU |
| +011+ | 3.52 | Claude Osteen | 120 | LAN |
| +014+ | 3.02 | Al Jackson | 95.3 | SLN |
| +021+ | 2.69 | Dennis Ribant | 76.7 | NYN |
| +024+ | 2.55 | Mel Stottlemyre | 126 | NYA |
| +027+ | 2.48 | Joe Horlen | 91 | CHA |
| +029+ | 2.44 | Steve Barber | 90.7 | BAL |
| +033+ | 2.31 | Pete Richert | 130 | TEX |
| +036+ | 2.23 | Bob Veale | 120.7 | PIT |
| +037+ | 2.21 | Tommy John | 100.7 | CHA |
| +038+ | 2.2 | Jim Kaat | 112 | MIN |
| +044+ | 2.12 | Gaylord Perry | 87.7 | SFN |
| +048+ | 1.84 | Gary Bell | 110.3 | CLE |
| +049+ | 1.83 | Jim Maloney | 102 | CIN |
| +054+ | 1.69 | Denny McLain | 126 | DET |
| +055+ | 1.67 | Dave Wickersham | 66.7 | DET |
| +060+ | 1.61 | Sam McDowell | 81 | CLE |
| +069+ | 1.35 | Minnie Rojas | 33 | ANA |
| +071+ | 1.34 | Whitey Ford | 42 | NYA |
| +073+ | 1.33 | Jim Grant | 111.7 | MIN |
| +074+ | 1.32 | Gary Peters | 89.7 | CHA |
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