| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 17.08 | 196609290_LAN_SLN |
| Jim Bunning | PHI | 7.47 | 196609281_PIT_PHI |
| Mike Cuellar | HOU | 5.49 | 196609282_HOU_CIN |
| Jim Kaat | MIN | 3.28 | 196609280_CLE_MIN |
| Al Jackson | SLN | 2.93 | 196609290_LAN_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sammy Ellis | CIN | -8.33 | 196609282_HOU_CIN |
| Bob Bruce | HOU | -3.41 | 196609290_HOU_CIN |
| Dick Ellsworth | CHN | -1.41 | 196609281_CHN_NYN |
| Tony Cloninger | ATL | -1.25 | 196609280_SFN_ATL |
| Bob Shaw | NYN | -1.1 | 196609282_CHN_NYN |
Based on accumulated WAA for this season up to 1966-09-30.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 13.15 | Sandy Koufax | 314 | LAN |
| +005+ | 8.99 | Juan Marichal | 299 | SFN |
| +007+ | 8.54 | Jim Bunning | 309 | PHI |
| +011+ | 7.34 | Mike Cuellar | 227.7 | HOU |
| +013+ | 7.16 | Gary Peters | 205 | CHA |
| +014+ | 6.99 | Bob Gibson | 272.3 | SLN |
| +018+ | 6.03 | Jim Kaat | 299.7 | MIN |
| +025+ | 5.42 | Al Jackson | 232.7 | SLN |
| +028+ | 5.32 | Joe Horlen | 203 | CHA |
| +034+ | 4.44 | Steve Hargan | 191 | CLE |
| +035+ | 4.41 | Bruce Howard | 150.3 | CHA |
| +037+ | 4.31 | Tommy John | 221.7 | CHA |
| +040+ | 4.02 | Jim Nash | 117.7 | OAK |
| +041+ | 3.97 | Sonny Siebert | 242 | CLE |
| +042+ | 3.85 | Jim Maloney | 224.7 | CIN |
| +045+ | 3.75 | Claude Osteen | 240.3 | LAN |
| +044+ | 3.75 | Jim Perry | 176.3 | MIN |
| +048+ | 3.54 | Steve Barber | 132.3 | BAL |
| +055+ | 3.33 | Bob Veale | 258.7 | PIT |
| +061+ | 2.87 | Earl Wilson | 265 | TOT |
| +062+ | 2.83 | Gaylord Perry | 248.7 | SFN |
| +063+ | 2.76 | Don Sutton | 225.7 | LAN |
| +069+ | 2.67 | Dean Chance | 260 | ANA |
| +076+ | 2.35 | Luis Tiant | 147.3 | CLE |
| +077+ | 2.33 | Jim Bouton | 119 | NYA |
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