| Starter | Tm | Tier | Game |
|---|---|---|---|
| Juan Marichal | SFN | 7.62 | 196605070_SFN_SLN |
| Jim Bunning | PHI | 6.06 | 196605070_PIT_PHI |
| Mel Stottlemyre | NYA | 4.16 | 196605090_NYA_MIN |
| Joe Horlen | CHA | 2.44 | 196605080_DET_CHA |
| Dean Chance | ANA | 2.09 | 196605080_NYA_ANA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Earl Wilson | BOS | -3.25 | 196605081_BOS_MIN |
| Ernie Broglio | CHN | -2.99 | 196605070_CHN_NYN |
| Fred Talbot | OAK | -2.49 | 196605080_TEX_OAK |
| Art Mahaffey | SLN | -2.01 | 196605070_SFN_SLN |
| Wade Blasingame | ATL | -1.68 | 196605070_ATL_HOU |
Based on accumulated WAA for this season up to 1966-05-09.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 2.75 | Juan Marichal | 50 | SFN |
| +004+ | 2.13 | Sam McDowell | 52.7 | CLE |
| +006+ | 1.96 | Mel Stottlemyre | 47 | NYA |
| +009+ | 1.67 | Mike Cuellar | 36 | HOU |
| +011+ | 1.56 | Chris Short | 45.7 | PHI |
| +013+ | 1.52 | Claude Osteen | 54.7 | LAN |
| +017+ | 1.33 | Luis Tiant | 30 | CLE |
| +019+ | 1.29 | Jim Bunning | 47.7 | PHI |
| +022+ | 1.27 | Tommy John | 35.3 | CHA |
| +023+ | 1.26 | Jim Grant | 40.3 | MIN |
| +024+ | 1.26 | Gary Peters | 29.3 | CHA |
| XXXXX | 1.22 | Denny McLain | 40.7 | DET |
| XXXXX | 1.2 | Rollie Sheldon | 33.7 | OAK |
| XXXXX | 1.06 | Jim Maloney | 18.7 | CIN |
| XXXXX | 1.03 | Jim O'Toole | 21 | CIN |
| XXXXX | 1.02 | Clay Carroll | 24.7 | ATL |
| XXXXX | 0.98 | Whitey Ford | 37 | NYA |
| XXXXX | 0.91 | Bob Gibson | 42 | SLN |
| XXXXX | 0.87 | Jack Hamilton | 35.7 | NYN |
| XXXXX | 0.84 | Ken Johnson | 39 | ATL |
| XXXXX | 0.83 | Phil Ortega | 24 | TEX |
| XXXXX | 0.83 | Rob Gardner | 24.3 | NYN |
| XXXXX | 0.82 | Steve Barber | 31.7 | BAL |
| XXXXX | 0.8 | Barry Latman | 30 | HOU |
| XXXXX | 0.79 | Denny Lemaster | 30 | ATL |
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