| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Bunning | PHI | 6.63 | 196607311_PHI_PIT |
| Claude Osteen | LAN | 6.08 | 196607310_LAN_SLN |
| Joe Horlen | CHA | 4.43 | 196607311_NYA_CHA |
| Jim Maloney | CIN | 3.56 | 196607290_HOU_CIN |
| Mel Stottlemyre | NYA | 2.14 | 196607300_NYA_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sammy Ellis | CIN | -3.88 | 196607300_HOU_CIN |
| Dick Ellsworth | CHN | -2.55 | 196607300_CHN_NYN |
| Tony Cloninger | ATL | -1.42 | 196607290_SFN_ATL |
| Bill Monbouquette | DET | -1.36 | 196607311_DET_OAK |
| Bob Buhl | PHI | -1.36 | 196607312_PHI_PIT |
Based on accumulated WAA for this season up to 1966-07-31.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.05 | Sandy Koufax | 202.3 | LAN |
| +003+ | 7 | Juan Marichal | 198.3 | SFN |
| +007+ | 5.96 | Bob Gibson | 179.3 | SLN |
| +010+ | 5.13 | Jim Bunning | 194.7 | PHI |
| +012+ | 4.92 | Claude Osteen | 175.3 | LAN |
| +016+ | 4.5 | Joe Horlen | 141 | CHA |
| +017+ | 4.4 | Al Jackson | 150.7 | SLN |
| +019+ | 3.66 | Gary Peters | 133.3 | CHA |
| +021+ | 3.64 | Mike Cuellar | 127.7 | HOU |
| +023+ | 3.43 | Steve Barber | 123.7 | BAL |
| +030+ | 3.2 | Tommy John | 138 | CHA |
| +033+ | 3.1 | Jim Maloney | 154 | CIN |
| +038+ | 2.85 | Dennis Ribant | 117 | NYN |
| +041+ | 2.71 | George Brunet | 138 | ANA |
| +045+ | 2.7 | Bob Veale | 158 | PIT |
| +044+ | 2.7 | Sonny Siebert | 162.7 | CLE |
| +047+ | 2.64 | Jim Kaat | 180 | MIN |
| +053+ | 2.44 | Bruce Howard | 88 | CHA |
| +060+ | 2.24 | Woodie Fryman | 116.7 | PIT |
| +061+ | 2.22 | Gaylord Perry | 147 | SFN |
| +064+ | 2.16 | Sam McDowell | 102.7 | CLE |
| +066+ | 2.1 | Dave McNally | 133.3 | BAL |
| +074+ | 1.89 | Larry Jackson | 152.7 | TOT |
| +076+ | 1.86 | Jim O'Toole | 83.3 | CIN |
| +077+ | 1.85 | Gary Bell | 167.7 | CLE |
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