| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 15.23 | 196609111_HOU_LAN |
| Juan Marichal | SFN | 9.85 | 196609130_PHI_SFN |
| Jim Kaat | MIN | 3.9 | 196609130_MIN_DET |
| Al Jackson | SLN | 3.34 | 196609110_SLN_PIT |
| Tommy John | CHA | 2.6 | 196609130_CHA_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mickey Lolich | DET | -3.14 | 196609130_MIN_DET |
| Fred Newman | ANA | -1.07 | 196609110_ANA_CLE |
| Ray Sadecki | SFN | -0.99 | 196609111_CHN_SFN |
| Paul Lindblad | OAK | -0.87 | 196609130_OAK_CLE |
| Phil Ortega | TEX | -0.68 | 196609130_TEX_NYA |
Based on accumulated WAA for this season up to 1966-09-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 11.34 | Sandy Koufax | 279 | LAN |
| +005+ | 9.26 | Juan Marichal | 272 | SFN |
| +006+ | 8.52 | Jim Bunning | 276 | PHI |
| +009+ | 7.35 | Gary Peters | 205 | CHA |
| +010+ | 7.3 | Bob Gibson | 249.3 | SLN |
| +014+ | 6.71 | Mike Cuellar | 196.7 | HOU |
| +020+ | 5.31 | Al Jackson | 215.3 | SLN |
| +023+ | 5.23 | Jim Kaat | 266.7 | MIN |
| +033+ | 4.5 | Claude Osteen | 221.7 | LAN |
| +034+ | 4.48 | Bruce Howard | 136.7 | CHA |
| +035+ | 4.38 | Tommy John | 202 | CHA |
| +039+ | 3.72 | Jim Maloney | 203 | CIN |
| +040+ | 3.7 | Jim Perry | 158.7 | MIN |
| +042+ | 3.58 | Steve Hargan | 160.7 | CLE |
| +044+ | 3.49 | Sonny Siebert | 231 | CLE |
| +046+ | 3.41 | Jim Nash | 103.7 | OAK |
| +050+ | 3.26 | Jim Grant | 228.3 | MIN |
| +051+ | 3.24 | Dennis Ribant | 177.7 | NYN |
| +063+ | 2.67 | Dave McNally | 195 | BAL |
| +072+ | 2.33 | Earl Wilson | 243 | TOT |
| +074+ | 2.31 | Billy O'Dell | 99 | TOT |
| +075+ | 2.27 | Don Sutton | 217.7 | LAN |
| +080+ | 2.14 | Bob Veale | 228.7 | PIT |
| +087+ | 2.1 | Lew Krausse | 166 | OAK |
| +089+ | 2.04 | Sam McDowell | 172.7 | CLE |
_