| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 17.54 | 196607180_LAN_PHI |
| Jim Bunning | PHI | 5.65 | 196607190_PHI_HOU |
| Jim Maloney | CIN | 3.93 | 196607190_CIN_CHN |
| Bob Veale | PIT | 3.27 | 196607180_SFN_PIT |
| Jim Kaat | MIN | 2.68 | 196607191_MIN_TEX |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Fred Talbot | NYA | -2.43 | 196607171_NYA_MIN |
| Art Mahaffey | SLN | -2.16 | 196607172_CHN_SLN |
| Tony Cloninger | ATL | -1.45 | 196607190_ATL_SLN |
| Dick Bosman | TEX | -1.44 | 196607171_TEX_ANA |
| Hank Fischer | CIN | -1.1 | 196607170_CIN_ATL |
Based on accumulated WAA for this season up to 1966-07-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.8 | Sandy Koufax | 182.3 | LAN |
| +004+ | 6.17 | Juan Marichal | 181.3 | SFN |
| +009+ | 5.21 | Bob Gibson | 163.3 | SLN |
| +011+ | 5.04 | Claude Osteen | 156.7 | LAN |
| +014+ | 4.19 | Mike Cuellar | 115 | HOU |
| +016+ | 4.08 | Al Jackson | 127 | SLN |
| +019+ | 3.68 | Steve Barber | 122.7 | BAL |
| +020+ | 3.46 | Joe Horlen | 119 | CHA |
| +022+ | 3.17 | George Brunet | 122 | ANA |
| +025+ | 3.05 | Jim Bunning | 165.7 | PHI |
| +024+ | 3.05 | Jim Kaat | 162.7 | MIN |
| +026+ | 3.03 | Jim Maloney | 138.7 | CIN |
| +031+ | 2.82 | Gary Peters | 116.3 | CHA |
| +032+ | 2.82 | Tommy John | 124 | CHA |
| +040+ | 2.6 | Bob Veale | 158 | PIT |
| +039+ | 2.6 | Minnie Rojas | 47.7 | ANA |
| +050+ | 2.23 | Sam McDowell | 101.7 | CLE |
| +051+ | 2.22 | Gary Bell | 147.7 | CLE |
| +056+ | 2.17 | Woodie Fryman | 98.7 | PIT |
| +057+ | 2.16 | Dennis Ribant | 91.7 | NYN |
| +060+ | 2.09 | Ken Johnson | 125.7 | ATL |
| +065+ | 2.04 | Gaylord Perry | 122 | SFN |
| +066+ | 2.01 | Ray Washburn | 89.7 | SLN |
| +067+ | 2.01 | Sonny Siebert | 137.3 | CLE |
| +076+ | 1.67 | Larry Jackson | 130.7 | TOT |
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