| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 14.53 | 196607010_SLN_LAN |
| Jim Bunning | PHI | 10.66 | 196607020_CHN_PHI |
| Bob Gibson | SLN | 9.1 | 196607020_SLN_LAN |
| Bob Veale | PIT | 4.19 | 196607031_PIT_NYN |
| Joe Horlen | CHA | 3.73 | 196607020_BOS_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dick Stigman | BOS | -1.51 | 196607032_BOS_CHA |
| Fred Talbot | NYA | -1.5 | 196607010_NYA_TEX |
| Earl Wilson | DET | -1.36 | 196607020_OAK_DET |
| Hank Fischer | CIN | -1.26 | 196607030_CIN_HOU |
| Denny Lemaster | ATL | -1.19 | 196607010_ATL_SFN |
Based on accumulated WAA for this season up to 1966-07-03.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.84 | Sandy Koufax | 152.3 | LAN |
| +004+ | 5.56 | Bob Gibson | 159 | SLN |
| +005+ | 5.41 | Juan Marichal | 155 | SFN |
| +008+ | 4.93 | Jim Bunning | 146.3 | PHI |
| +009+ | 4.27 | Mike Cuellar | 94.3 | HOU |
| +015+ | 3.78 | Al Jackson | 104.3 | SLN |
| +016+ | 3.71 | Claude Osteen | 134.7 | LAN |
| +018+ | 3.18 | Joe Horlen | 100 | CHA |
| +019+ | 3.04 | Steve Barber | 103 | BAL |
| +022+ | 2.85 | Dennis Ribant | 83.7 | NYN |
| +026+ | 2.7 | Sam McDowell | 94 | CLE |
| +027+ | 2.65 | Gaylord Perry | 96.7 | SFN |
| +032+ | 2.49 | Mel Stottlemyre | 132.7 | NYA |
| +035+ | 2.47 | Jim Kaat | 127 | MIN |
| +040+ | 2.35 | Tommy John | 108 | CHA |
| +042+ | 2.29 | Bob Veale | 136.3 | PIT |
| +047+ | 2.2 | Jim Maloney | 109 | CIN |
| +051+ | 1.93 | Minnie Rojas | 40 | ANA |
| +054+ | 1.85 | Pete Richert | 142.3 | TEX |
| +057+ | 1.7 | Clay Carroll | 70 | ATL |
| +061+ | 1.67 | Woodie Fryman | 76 | PIT |
| +067+ | 1.52 | Sonny Siebert | 121.3 | CLE |
| +070+ | 1.44 | Gary Bell | 120.3 | CLE |
| +075+ | 1.4 | George Brunet | 96.7 | ANA |
| +080+ | 1.35 | Jim Grant | 123.7 | MIN |
_