| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Bunning | PHI | 9.79 | 196606240_PIT_PHI |
| Juan Marichal | SFN | 9.28 | 196606250_SFN_CIN |
| Bob Gibson | SLN | 7.69 | 196606230_SLN_HOU |
| Mel Stottlemyre | NYA | 4.29 | 196606250_CHA_NYA |
| Bob Veale | PIT | 3.45 | 196606240_PIT_PHI |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Wade Blasingame | ATL | -2.93 | 196606240_LAN_ATL |
| Earl Wilson | DET | -2.3 | 196606230_DET_TEX |
| Sammy Ellis | CIN | -2.23 | 196606240_SFN_CIN |
| Ray Sadecki | SFN | -1.35 | 196606230_SFN_CHN |
| Camilo Pascual | MIN | -1.19 | 196606242_MIN_DET |
Based on accumulated WAA for this season up to 1966-06-25.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.98 | Sandy Koufax | 135.3 | LAN |
| +002+ | 5.82 | Bob Gibson | 145 | SLN |
| +005+ | 5.08 | Juan Marichal | 147 | SFN |
| +007+ | 4.67 | Jim Bunning | 133.7 | PHI |
| +010+ | 3.55 | Mike Cuellar | 83.3 | HOU |
| +011+ | 3.47 | Claude Osteen | 120 | LAN |
| +017+ | 2.97 | Al Jackson | 87.3 | SLN |
| +021+ | 2.7 | Jim Maloney | 100.3 | CIN |
| +023+ | 2.64 | Tommy John | 99 | CHA |
| +026+ | 2.5 | Mel Stottlemyre | 126 | NYA |
| +029+ | 2.4 | Steve Barber | 90.7 | BAL |
| +031+ | 2.34 | Dennis Ribant | 67.7 | NYN |
| +035+ | 2.28 | Joe Horlen | 84 | CHA |
| +037+ | 2.25 | Pete Richert | 130 | TEX |
| +038+ | 2.18 | Bob Veale | 120.7 | PIT |
| +041+ | 2.16 | Jim Kaat | 112 | MIN |
| +049+ | 1.81 | Minnie Rojas | 31 | ANA |
| +050+ | 1.79 | Gary Bell | 110.3 | CLE |
| +054+ | 1.64 | Dave Wickersham | 66.7 | DET |
| +055+ | 1.64 | Denny McLain | 126 | DET |
| +057+ | 1.63 | Sam McDowell | 79 | CLE |
| +069+ | 1.37 | Gaylord Perry | 78.7 | SFN |
| +073+ | 1.32 | Whitey Ford | 42 | NYA |
| +075+ | 1.29 | Jim Grant | 111.7 | MIN |
| +076+ | 1.26 | Gary Peters | 89.7 | CHA |
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