| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Bunning | PHI | 7.99 | 196609240_SLN_PHI |
| Mike Cuellar | HOU | 4.92 | 196609240_SFN_HOU |
| Al Jackson | SLN | 3.91 | 196609240_SLN_PHI |
| Tommy John | CHA | 2.5 | 196609230_CHA_TEX |
| Steve Barber | BAL | 1.01 | 196609230_BAL_ANA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mickey Lolich | DET | -3.27 | 196609221_ANA_DET |
| Dick Ellsworth | CHN | -1.57 | 196609232_LAN_CHN |
| Wally Bunker | BAL | -1.21 | 196609240_BAL_ANA |
| Bob Shaw | NYN | -1.21 | 196609240_NYN_CIN |
| Milt Pappas | CIN | -1.07 | 196609240_NYN_CIN |
Based on accumulated WAA for this season up to 1966-09-24.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 12.29 | Sandy Koufax | 297 | LAN |
| +005+ | 8.82 | Juan Marichal | 290 | SFN |
| +007+ | 8.5 | Jim Bunning | 300 | PHI |
| +011+ | 7.55 | Bob Gibson | 266.3 | SLN |
| +012+ | 7.41 | Mike Cuellar | 219.7 | HOU |
| +013+ | 7.3 | Gary Peters | 205 | CHA |
| +021+ | 5.52 | Al Jackson | 226.7 | SLN |
| +027+ | 5 | Jim Kaat | 282.7 | MIN |
| +030+ | 4.8 | Joe Horlen | 195 | CHA |
| +033+ | 4.51 | Bruce Howard | 150.3 | CHA |
| +036+ | 4.32 | Steve Hargan | 178.3 | CLE |
| +037+ | 4.31 | Tommy John | 214.7 | CHA |
| +038+ | 4.07 | Sonny Siebert | 242 | CLE |
| +042+ | 3.89 | Claude Osteen | 230.7 | LAN |
| +043+ | 3.63 | Jim Nash | 109.7 | OAK |
| +044+ | 3.61 | Steve Barber | 132.3 | BAL |
| +047+ | 3.44 | Jim Maloney | 215.7 | CIN |
| +051+ | 3.31 | Jim Perry | 167.3 | MIN |
| +055+ | 2.95 | Bob Veale | 249.7 | PIT |
| +065+ | 2.67 | Earl Wilson | 251 | TOT |
| +068+ | 2.66 | Dave McNally | 206 | BAL |
| +069+ | 2.64 | Gaylord Perry | 239.7 | SFN |
| +070+ | 2.58 | Jim Grant | 241.3 | MIN |
| +071+ | 2.52 | Don Sutton | 221.7 | LAN |
| +074+ | 2.43 | Johnny Odom | 85 | OAK |
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