| Starter | Tm | Tier | Game |
|---|---|---|---|
| Juan Marichal | SFN | 13.99 | 196606040_SFN_PHI |
| Sandy Koufax | LAN | 10.36 | 196606051_LAN_NYN |
| Jim Maloney | CIN | 5.87 | 196606051_CHN_CIN |
| Mel Stottlemyre | NYA | 5.5 | 196606040_NYA_BOS |
| Chris Short | PHI | 4.8 | 196606040_SFN_PHI |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ernie Broglio | CHN | -2.34 | 196606052_CHN_CIN |
| Diego Segui | TEX | -2.29 | 196606051_TEX_CHA |
| Bill Monbouquette | DET | -1.77 | 196606051_DET_ANA |
| Sammy Ellis | CIN | -1.02 | 196606040_CHN_CIN |
| Fred Talbot | OAK | -0.99 | 196606042_OAK_BAL |
Based on accumulated WAA for this season up to 1966-06-06.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.71 | Juan Marichal | 105 | SFN |
| +002+ | 4.47 | Sandy Koufax | 100.3 | LAN |
| +005+ | 3.66 | Jim Bunning | 97.7 | PHI |
| +006+ | 3.21 | Bob Gibson | 102 | SLN |
| +012+ | 2.65 | Mike Cuellar | 53.3 | HOU |
| +013+ | 2.39 | Mel Stottlemyre | 93 | NYA |
| +014+ | 2.27 | Claude Osteen | 93.7 | LAN |
| +015+ | 2.25 | Pete Richert | 91.7 | TEX |
| +018+ | 2.1 | Chris Short | 93.7 | PHI |
| +020+ | 2.08 | Al Jackson | 53 | SLN |
| +022+ | 2.06 | Jim Maloney | 66.7 | CIN |
| +025+ | 1.99 | Steve Barber | 63.3 | BAL |
| +027+ | 1.9 | Dick Ellsworth | 83 | CHN |
| +033+ | 1.72 | Tommy John | 73.3 | CHA |
| +034+ | 1.7 | Dave Giusti | 62.7 | HOU |
| +036+ | 1.66 | Phil Ortega | 76.3 | TEX |
| +042+ | 1.53 | John Buzhardt | 54 | CHA |
| +046+ | 1.5 | Gary Peters | 62 | CHA |
| +049+ | 1.41 | Don Sutton | 80 | LAN |
| +051+ | 1.28 | Luis Tiant | 56.3 | CLE |
| XXXXX | 1.22 | Whitey Ford | 40 | NYA |
| XXXXX | 1.18 | Dennis Ribant | 42 | NYN |
| XXXXX | 1.15 | Clay Carroll | 39.3 | ATL |
| XXXXX | 1.13 | Ralph Terry | 35.7 | OAK |
| XXXXX | 1.13 | Vern Law | 40.3 | PIT |
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