| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 15.83 | 196607050_CIN_LAN |
| Juan Marichal | SFN | 10.26 | 196607041_SLN_SFN |
| Jim Bunning | PHI | 9.35 | 196607060_NYN_PHI |
| Joe Horlen | CHA | 4.79 | 196607062_CHA_TEX |
| Mel Stottlemyre | NYA | 4.38 | 196607041_CHA_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Fred Talbot | NYA | -2.13 | 196607050_BOS_NYA |
| Lee Stange | BOS | -1.9 | 196607042_TEX_BOS |
| Earl Wilson | DET | -1.47 | 196607060_ANA_DET |
| Jim Hannan | TEX | -1.44 | 196607042_TEX_BOS |
| Denny Lemaster | ATL | -1.24 | 196607050_ATL_HOU |
Based on accumulated WAA for this season up to 1966-07-06.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.59 | Sandy Koufax | 161.3 | LAN |
| +005+ | 5.61 | Bob Gibson | 159 | SLN |
| +008+ | 4.96 | Jim Bunning | 151.7 | PHI |
| +009+ | 4.81 | Juan Marichal | 163 | SFN |
| +010+ | 4.55 | Al Jackson | 113.3 | SLN |
| +012+ | 4.46 | Claude Osteen | 143.7 | LAN |
| +014+ | 4.05 | Mike Cuellar | 99.3 | HOU |
| +017+ | 3.75 | Steve Barber | 112 | BAL |
| +020+ | 3.37 | Joe Horlen | 107 | CHA |
| +022+ | 2.97 | Gaylord Perry | 105.7 | SFN |
| +025+ | 2.85 | Sam McDowell | 101 | CLE |
| +031+ | 2.57 | Dennis Ribant | 87.7 | NYN |
| +035+ | 2.53 | Jim Maloney | 115 | CIN |
| +036+ | 2.42 | Woodie Fryman | 85 | PIT |
| +039+ | 2.4 | Tommy John | 108 | CHA |
| +041+ | 2.34 | Bob Veale | 136.3 | PIT |
| +042+ | 2.33 | Jim Kaat | 135.3 | MIN |
| +048+ | 2.15 | George Brunet | 106 | ANA |
| +050+ | 2.12 | Gary Peters | 99.3 | CHA |
| +052+ | 2.06 | Minnie Rojas | 41.7 | ANA |
| +054+ | 2.02 | Mel Stottlemyre | 139.7 | NYA |
| +062+ | 1.87 | Pete Richert | 142.3 | TEX |
| +071+ | 1.56 | Ken Johnson | 112 | ATL |
| +073+ | 1.54 | Sonny Siebert | 121.3 | CLE |
| +075+ | 1.45 | Don Schwall | 49.3 | TOT |
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