| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 17.44 | 196607270_PHI_LAN |
| Bob Gibson | SLN | 8 | 196607280_SLN_ATL |
| Jim Bunning | PHI | 5.59 | 196607270_PHI_LAN |
| Jim Maloney | CIN | 3.56 | 196607290_HOU_CIN |
| Jim Kaat | MIN | 2.51 | 196607270_MIN_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Fred Talbot | NYA | -1.91 | 196607270_MIN_NYA |
| Tony Cloninger | ATL | -1.42 | 196607290_SFN_ATL |
| Phil Ortega | TEX | -1.22 | 196607292_BOS_TEX |
| Tommie Sisk | PIT | -0.85 | 196607270_PIT_SFN |
| Earl Wilson | DET | -0.72 | 196607270_DET_CHA |
Based on accumulated WAA for this season up to 1966-07-29.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.06 | Sandy Koufax | 202.3 | LAN |
| +003+ | 7.03 | Juan Marichal | 198.3 | SFN |
| +007+ | 5.99 | Bob Gibson | 179.3 | SLN |
| +010+ | 5.17 | Claude Osteen | 170.7 | LAN |
| +015+ | 4.64 | Jim Bunning | 185.7 | PHI |
| +016+ | 3.98 | Joe Horlen | 132 | CHA |
| +017+ | 3.88 | Al Jackson | 141.7 | SLN |
| +018+ | 3.87 | Mike Cuellar | 120.3 | HOU |
| +021+ | 3.42 | Steve Barber | 123.7 | BAL |
| +027+ | 3.12 | Jim Maloney | 154 | CIN |
| +033+ | 2.93 | Gary Peters | 124.3 | CHA |
| +037+ | 2.74 | Dennis Ribant | 108 | NYN |
| +039+ | 2.72 | Bob Veale | 158 | PIT |
| +038+ | 2.72 | George Brunet | 138 | ANA |
| +041+ | 2.7 | Sonny Siebert | 162.7 | CLE |
| +047+ | 2.6 | Woodie Fryman | 110.7 | PIT |
| +052+ | 2.48 | Gaylord Perry | 137 | SFN |
| +053+ | 2.48 | Tommy John | 129 | CHA |
| +054+ | 2.47 | Jim Kaat | 172.7 | MIN |
| +055+ | 2.45 | Bruce Howard | 88 | CHA |
| +064+ | 2.17 | Sam McDowell | 102.7 | CLE |
| +066+ | 2.1 | Dave McNally | 133.3 | BAL |
| +070+ | 1.98 | Mel Stottlemyre | 170 | NYA |
| +074+ | 1.88 | Ken Johnson | 137.3 | ATL |
| +076+ | 1.87 | Jim O'Toole | 83.3 | CIN |
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