| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 15.61 | 196609070_SFN_LAN |
| Juan Marichal | SFN | 9.57 | 196609090_CHN_SFN |
| Jim Bunning | PHI | 7.78 | 196609100_CIN_PHI |
| Bob Gibson | SLN | 6.91 | 196609100_SLN_PIT |
| Gary Peters | CHA | 6.01 | 196609090_TEX_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sammy Ellis | CIN | -5.95 | 196609100_CIN_PHI |
| Bob Bruce | HOU | -2.89 | 196609090_HOU_LAN |
| Dick Ellsworth | CHN | -2.3 | 196609100_CHN_SFN |
| Fred Talbot | NYA | -1.57 | 196609090_NYA_BOS |
| Bob Shaw | NYN | -1.01 | 196609090_ATL_NYN |
Based on accumulated WAA for this season up to 1966-09-10.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 10.6 | Sandy Koufax | 270 | LAN |
| +005+ | 8.94 | Juan Marichal | 263 | SFN |
| +006+ | 8.51 | Jim Bunning | 276 | PHI |
| +009+ | 7.34 | Gary Peters | 205 | CHA |
| +010+ | 7.3 | Bob Gibson | 249.3 | SLN |
| +013+ | 6.7 | Mike Cuellar | 196.7 | HOU |
| +015+ | 5.76 | Jim Kaat | 260.7 | MIN |
| +022+ | 5.23 | Al Jackson | 209.3 | SLN |
| +025+ | 4.77 | Tommy John | 196.7 | CHA |
| +028+ | 4.63 | Claude Osteen | 215.7 | LAN |
| +034+ | 4.48 | Bruce Howard | 136.7 | CHA |
| +036+ | 4.03 | Jim Maloney | 199.3 | CIN |
| +037+ | 3.89 | Dennis Ribant | 175.7 | NYN |
| +040+ | 3.69 | Jim Perry | 158.7 | MIN |
| +043+ | 3.58 | Sonny Siebert | 231 | CLE |
| +044+ | 3.53 | Joe Horlen | 179 | CHA |
| +045+ | 3.45 | Jim Nash | 103.7 | OAK |
| +049+ | 3.29 | Jim Grant | 221.3 | MIN |
| +061+ | 2.77 | Steve Hargan | 147.7 | CLE |
| +065+ | 2.59 | Earl Wilson | 241 | TOT |
| +067+ | 2.5 | Gary Bell | 230.7 | CLE |
| +071+ | 2.38 | Dave McNally | 189 | BAL |
| +073+ | 2.37 | Don Sutton | 213.7 | LAN |
| +075+ | 2.31 | Billy O'Dell | 99 | TOT |
| +080+ | 2.19 | Bob Veale | 221.7 | PIT |
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