| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 13.13 | 196606220_LAN_HOU |
| Jim Bunning | PHI | 9.79 | 196606240_PIT_PHI |
| Bob Gibson | SLN | 7.69 | 196606230_SLN_HOU |
| Jim Maloney | CIN | 5.16 | 196606220_PIT_CIN |
| Bob Veale | PIT | 3.45 | 196606240_PIT_PHI |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ernie Broglio | CHN | -3.12 | 196606222_SFN_CHN |
| Wade Blasingame | ATL | -2.93 | 196606240_LAN_ATL |
| Earl Wilson | DET | -2.3 | 196606230_DET_TEX |
| Sammy Ellis | CIN | -2.23 | 196606240_SFN_CIN |
| Fred Talbot | NYA | -2.02 | 196606220_BAL_NYA |
Based on accumulated WAA for this season up to 1966-06-24.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.97 | Sandy Koufax | 135.3 | LAN |
| +002+ | 5.82 | Bob Gibson | 145 | SLN |
| +006+ | 4.69 | Jim Bunning | 133.7 | PHI |
| +007+ | 4.61 | Juan Marichal | 138 | SFN |
| +010+ | 3.46 | Claude Osteen | 120 | LAN |
| +013+ | 3.05 | Mike Cuellar | 74.3 | HOU |
| +017+ | 2.98 | Al Jackson | 87.3 | SLN |
| +021+ | 2.73 | Jim Maloney | 100.3 | CIN |
| +023+ | 2.65 | Tommy John | 99 | CHA |
| +028+ | 2.41 | Steve Barber | 90.7 | BAL |
| +030+ | 2.35 | Gary Bell | 104 | CLE |
| +031+ | 2.35 | Dennis Ribant | 67.7 | NYN |
| +033+ | 2.29 | Joe Horlen | 84 | CHA |
| +034+ | 2.27 | Pete Richert | 130 | TEX |
| +035+ | 2.18 | Bob Veale | 120.7 | PIT |
| +037+ | 2.17 | Jim Kaat | 112 | MIN |
| +039+ | 2.16 | Mel Stottlemyre | 119 | NYA |
| +051+ | 1.81 | Minnie Rojas | 31 | ANA |
| +056+ | 1.66 | Dave Wickersham | 66.7 | DET |
| +057+ | 1.64 | Sam McDowell | 79 | CLE |
| +067+ | 1.39 | Gaylord Perry | 78.7 | SFN |
| +068+ | 1.38 | Whitey Ford | 40 | NYA |
| +070+ | 1.26 | Juan Pizarro | 50 | CHA |
| XXXXX | 1.25 | Joe Gibbon | 50.3 | SFN |
| XXXXX | 1.19 | Hank Aguirre | 58.3 | DET |
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