| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 4.99 | 196605140_LAN_PIT |
| Mel Stottlemyre | NYA | 4.79 | 196605140_NYA_OAK |
| Bob Gibson | SLN | 2.78 | 196605140_ATL_SLN |
| Milt Pappas | CIN | 2.07 | 196605150_CIN_CHN |
| Gary Peters | CHA | 2.05 | 196605140_CHA_DET |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Art Mahaffey | SLN | -3.39 | 196605150_ATL_SLN |
| Earl Wilson | BOS | -2.89 | 196605140_BOS_ANA |
| Jack Fisher | NYN | -2.21 | 196605140_SFN_NYN |
| Fred Talbot | OAK | -2.04 | 196605140_NYA_OAK |
| Bob Buhl | PHI | -1.73 | 196605140_HOU_PHI |
Based on accumulated WAA for this season up to 1966-05-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.21 | Juan Marichal | 59 | SFN |
| +005+ | 2.17 | Sam McDowell | 60.7 | CLE |
| +009+ | 1.86 | Mike Cuellar | 41.7 | HOU |
| +012+ | 1.64 | Mel Stottlemyre | 54 | NYA |
| +013+ | 1.61 | Jim Bunning | 55.7 | PHI |
| +015+ | 1.59 | Gary Peters | 46 | CHA |
| +016+ | 1.56 | Don Sutton | 61 | LAN |
| +017+ | 1.55 | Bob Gibson | 60 | SLN |
| +018+ | 1.54 | Sandy Koufax | 55.3 | LAN |
| +019+ | 1.53 | Dick Ellsworth | 48.7 | CHN |
| +021+ | 1.47 | Chris Short | 56.7 | PHI |
| +026+ | 1.3 | Jim O'Toole | 28 | CIN |
| +028+ | 1.29 | Denny McLain | 47.7 | DET |
| XXXXX | 1.22 | Barry Latman | 38.7 | HOU |
| XXXXX | 1.2 | Claude Osteen | 59 | LAN |
| XXXXX | 1.19 | Denny Lemaster | 44 | ATL |
| XXXXX | 1.15 | Clay Carroll | 26.7 | ATL |
| XXXXX | 1.12 | Jim Maloney | 25.7 | CIN |
| XXXXX | 1.11 | Whitey Ford | 39 | NYA |
| XXXXX | 1.11 | Luis Tiant | 30.7 | CLE |
| XXXXX | 1.08 | Phil Ortega | 38.3 | TEX |
| XXXXX | 1.06 | Al Jackson | 17 | SLN |
| XXXXX | 1.04 | Dean Chance | 56.7 | ANA |
| XXXXX | 0.97 | Sonny Siebert | 40.7 | CLE |
| XXXXX | 0.95 | Ray Sadecki | 29.7 | TOT |
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