| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 16.86 | 196609030_LAN_CIN |
| Juan Marichal | SFN | 9.15 | 196609040_SFN_SLN |
| Gary Peters | CHA | 6.93 | 196609040_BAL_CHA |
| Bob Gibson | SLN | 6.69 | 196609051_HOU_SLN |
| Mike Cuellar | HOU | 3.8 | 196609032_HOU_ATL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sammy Ellis | CIN | -5 | 196609040_LAN_CIN |
| Bob Bruce | HOU | -3.22 | 196609040_HOU_ATL |
| Dick Ellsworth | CHN | -2.7 | 196609052_PHI_CHN |
| Ray Culp | PHI | -2.47 | 196609052_PHI_CHN |
| Mickey Lolich | DET | -2.24 | 196609051_TEX_DET |
Based on accumulated WAA for this season up to 1966-09-05.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 10.57 | Sandy Koufax | 263 | LAN |
| +005+ | 8.58 | Juan Marichal | 254.7 | SFN |
| +007+ | 8.15 | Jim Bunning | 261 | PHI |
| +009+ | 7.58 | Bob Gibson | 241.3 | SLN |
| +010+ | 7.18 | Gary Peters | 202 | CHA |
| +013+ | 6.36 | Mike Cuellar | 184.7 | HOU |
| +019+ | 5.34 | Jim Kaat | 251.7 | MIN |
| +023+ | 4.99 | Al Jackson | 205.3 | SLN |
| +026+ | 4.61 | Tommy John | 188.7 | CHA |
| +033+ | 4.19 | Jim Maloney | 193.3 | CIN |
| +034+ | 4.02 | Claude Osteen | 207 | LAN |
| +037+ | 3.81 | Jim Perry | 151.7 | MIN |
| +038+ | 3.79 | Bruce Howard | 127.7 | CHA |
| +040+ | 3.65 | Sonny Siebert | 231 | CLE |
| +041+ | 3.6 | Dennis Ribant | 166.7 | NYN |
| +046+ | 3.34 | Gaylord Perry | 214 | SFN |
| +049+ | 3.15 | Jim Grant | 213.3 | MIN |
| +052+ | 3.11 | Joe Horlen | 173 | CHA |
| +054+ | 2.98 | Jim Nash | 97.7 | OAK |
| +059+ | 2.9 | Sam McDowell | 166.3 | CLE |
| +063+ | 2.68 | Steve Hargan | 146 | CLE |
| +068+ | 2.47 | Bob Veale | 213.7 | PIT |
| +066+ | 2.47 | Don Sutton | 213.7 | LAN |
| +070+ | 2.4 | George Brunet | 190.3 | ANA |
| +078+ | 2.25 | Gary Bell | 221.7 | CLE |
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