| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 15.97 | 196609160_PIT_LAN |
| Juan Marichal | SFN | 9.55 | 196609170_NYN_SFN |
| Bob Gibson | SLN | 6.47 | 196609161_SLN_CHN |
| Mike Cuellar | HOU | 4.71 | 196609160_PHI_HOU |
| Jim Kaat | MIN | 2.83 | 196609170_MIN_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sammy Ellis | CIN | -5.61 | 196609180_CIN_ATL |
| Bob Bruce | HOU | -3.63 | 196609181_NYN_HOU |
| Mickey Lolich | DET | -2.85 | 196609170_CLE_DET |
| Dick Ellsworth | CHN | -1.7 | 196609180_SLN_CHN |
| Ray Sadecki | SFN | -1.37 | 196609160_NYN_SFN |
Based on accumulated WAA for this season up to 1966-09-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 11.81 | Sandy Koufax | 288 | LAN |
| +005+ | 9.23 | Jim Bunning | 285 | PHI |
| +006+ | 9.08 | Juan Marichal | 281 | SFN |
| +010+ | 7.78 | Bob Gibson | 258.3 | SLN |
| +011+ | 7.33 | Gary Peters | 205 | CHA |
| +014+ | 6.99 | Mike Cuellar | 205.7 | HOU |
| +015+ | 6.01 | Al Jackson | 224.3 | SLN |
| +021+ | 5.5 | Jim Kaat | 275.7 | MIN |
| +027+ | 4.9 | Tommy John | 211.3 | CHA |
| +033+ | 4.45 | Bruce Howard | 149.3 | CHA |
| +035+ | 4.25 | Joe Horlen | 188 | CHA |
| +038+ | 4.1 | Sonny Siebert | 242 | CLE |
| +041+ | 3.84 | Steve Hargan | 169.7 | CLE |
| +042+ | 3.76 | Claude Osteen | 223.7 | LAN |
| +043+ | 3.66 | Jim Perry | 163.7 | MIN |
| +049+ | 3.37 | Jim Nash | 103.7 | OAK |
| +053+ | 3.09 | Dennis Ribant | 183.7 | NYN |
| +059+ | 2.76 | Jim Maloney | 206.7 | CIN |
| +062+ | 2.7 | Jim Grant | 232.3 | MIN |
| +063+ | 2.65 | Lew Krausse | 173.3 | OAK |
| +065+ | 2.59 | Gaylord Perry | 232.3 | SFN |
| +069+ | 2.5 | Dave McNally | 201 | BAL |
| +079+ | 2.26 | Earl Wilson | 243 | TOT |
| +081+ | 2.22 | Don Sutton | 217.7 | LAN |
| +083+ | 2.21 | Sam McDowell | 185.7 | CLE |
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