| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 15.97 | 196609160_PIT_LAN |
| Jim Bunning | PHI | 8.67 | 196609140_PHI_SFN |
| Bob Gibson | SLN | 6.47 | 196609161_SLN_CHN |
| Mike Cuellar | HOU | 4.71 | 196609160_PHI_HOU |
| Bruce Howard | CHA | 2.26 | 196609140_CHA_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sammy Ellis | CIN | -4.89 | 196609140_CIN_SLN |
| Dick Ellsworth | CHN | -2.03 | 196609140_ATL_CHN |
| Ray Sadecki | SFN | -1.37 | 196609160_NYN_SFN |
| Hank Fischer | BOS | -1.16 | 196609140_CHA_BOS |
| Bob Shaw | NYN | -1.11 | 196609150_NYN_SFN |
Based on accumulated WAA for this season up to 1966-09-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 11.79 | Sandy Koufax | 288 | LAN |
| +005+ | 9.2 | Jim Bunning | 285 | PHI |
| +006+ | 9.18 | Juan Marichal | 272 | SFN |
| +009+ | 7.76 | Bob Gibson | 258.3 | SLN |
| +011+ | 7.32 | Gary Peters | 205 | CHA |
| +013+ | 6.98 | Mike Cuellar | 205.7 | HOU |
| +016+ | 5.99 | Al Jackson | 224.3 | SLN |
| +023+ | 5.17 | Jim Kaat | 266.7 | MIN |
| +032+ | 4.53 | Bruce Howard | 142.7 | CHA |
| +034+ | 4.43 | Claude Osteen | 221.7 | LAN |
| +035+ | 4.35 | Tommy John | 202 | CHA |
| +036+ | 4.25 | Joe Horlen | 188 | CHA |
| +037+ | 4.1 | Sonny Siebert | 242 | CLE |
| +042+ | 3.66 | Jim Perry | 163.7 | MIN |
| +044+ | 3.52 | Steve Hargan | 160.7 | CLE |
| +047+ | 3.36 | Jim Nash | 103.7 | OAK |
| +052+ | 3.19 | Dennis Ribant | 177.7 | NYN |
| +060+ | 2.73 | Jim Maloney | 206.7 | CIN |
| +061+ | 2.71 | Jim Grant | 232.3 | MIN |
| +063+ | 2.64 | Lew Krausse | 173.3 | OAK |
| +067+ | 2.48 | Billy O'Dell | 101.3 | TOT |
| +069+ | 2.47 | Dave McNally | 201 | BAL |
| +078+ | 2.26 | Earl Wilson | 243 | TOT |
| +080+ | 2.21 | Don Sutton | 217.7 | LAN |
| +083+ | 2.14 | Gaylord Perry | 224.3 | SFN |
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