| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 16.85 | 196607090_ATL_LAN |
| Jim Bunning | PHI | 9.06 | 196607100_PHI_CHN |
| Bob Gibson | SLN | 8.37 | 196607080_HOU_SLN |
| Juan Marichal | SFN | 8.11 | 196607080_CIN_SFN |
| Joe Horlen | CHA | 4.62 | 196607101_CHA_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Diego Segui | TEX | -3.46 | 196607090_TEX_NYA |
| Fred Talbot | NYA | -2.82 | 196607090_TEX_NYA |
| Jim Lonborg | BOS | -2.75 | 196607081_CHA_BOS |
| Hank Fischer | CIN | -1.21 | 196607080_CIN_SFN |
| Denny Lemaster | ATL | -1.15 | 196607100_ATL_LAN |
Based on accumulated WAA for this season up to 1966-07-10.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.63 | Sandy Koufax | 168.3 | LAN |
| +006+ | 5.6 | Juan Marichal | 172 | SFN |
| +009+ | 5.22 | Bob Gibson | 163.3 | SLN |
| +011+ | 4.61 | Claude Osteen | 149.7 | LAN |
| +012+ | 4.39 | Al Jackson | 120.7 | SLN |
| +013+ | 4.29 | Mike Cuellar | 101.3 | HOU |
| +014+ | 4.08 | Jim Bunning | 155 | PHI |
| +016+ | 3.96 | Steve Barber | 119 | BAL |
| +021+ | 3.34 | Joe Horlen | 113 | CHA |
| +022+ | 2.97 | George Brunet | 115 | ANA |
| +023+ | 2.94 | Jim Kaat | 144.3 | MIN |
| +032+ | 2.66 | Dennis Ribant | 87.7 | NYN |
| +035+ | 2.58 | Woodie Fryman | 94 | PIT |
| +037+ | 2.49 | Bob Veale | 142 | PIT |
| +038+ | 2.49 | Jim Maloney | 121.3 | CIN |
| +040+ | 2.41 | Gaylord Perry | 111.3 | SFN |
| +049+ | 2.26 | Minnie Rojas | 43.7 | ANA |
| +050+ | 2.25 | Gary Peters | 107.3 | CHA |
| +051+ | 2.24 | Tommy John | 115 | CHA |
| +054+ | 2.16 | Sam McDowell | 101.7 | CLE |
| +062+ | 1.99 | Ray Washburn | 84.3 | SLN |
| +063+ | 1.89 | Sonny Siebert | 129.3 | CLE |
| +066+ | 1.87 | Ken Johnson | 119.7 | ATL |
| +073+ | 1.59 | Denny McLain | 148.7 | DET |
| +078+ | 1.49 | Don Schwall | 49.3 | TOT |
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