| Starter | Tm | Tier | Game |
|---|---|---|---|
| Juan Marichal | SFN | 10.91 | 196605260_PHI_SFN |
| Jim Bunning | PHI | 6.96 | 196605260_PHI_SFN |
| Sandy Koufax | LAN | 6.57 | 196605280_NYN_LAN |
| Jim Maloney | CIN | 5.91 | 196605270_CIN_SLN |
| Mel Stottlemyre | NYA | 4.42 | 196605270_CHA_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Art Mahaffey | SLN | -3.61 | 196605270_CIN_SLN |
| Earl Wilson | BOS | -2.42 | 196605260_MIN_BOS |
| Ernie Broglio | CHN | -2.25 | 196605270_ATL_CHN |
| Wade Blasingame | ATL | -1.84 | 196605270_ATL_CHN |
| Bill Monbouquette | DET | -1.29 | 196605270_ANA_DET |
Based on accumulated WAA for this season up to 1966-05-28.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.32 | Juan Marichal | 92 | SFN |
| +004+ | 3.03 | Sandy Koufax | 82.3 | LAN |
| +007+ | 2.51 | Chris Short | 80.3 | PHI |
| +008+ | 2.48 | Mel Stottlemyre | 80 | NYA |
| +009+ | 2.47 | Jim Bunning | 79.7 | PHI |
| +011+ | 2.34 | Al Jackson | 42 | SLN |
| +013+ | 2.19 | Mike Cuellar | 46.3 | HOU |
| +016+ | 1.98 | Bob Gibson | 84.3 | SLN |
| +019+ | 1.91 | Claude Osteen | 81.3 | LAN |
| +023+ | 1.71 | Jim Maloney | 50 | CIN |
| +025+ | 1.59 | Tommy John | 60.3 | CHA |
| +026+ | 1.57 | Sam McDowell | 68.3 | CLE |
| +028+ | 1.54 | Pete Richert | 75.3 | TEX |
| +030+ | 1.47 | Clay Carroll | 31 | ATL |
| +034+ | 1.34 | John O'Donoghue | 24.3 | CLE |
| +035+ | 1.33 | Luis Tiant | 44.7 | CLE |
| +036+ | 1.27 | Dick Ellsworth | 67.7 | CHN |
| +037+ | 1.26 | Jim O'Toole | 41.3 | CIN |
| XXXXX | 1.14 | Whitey Ford | 40 | NYA |
| XXXXX | 1.03 | Gary Bell | 66.7 | CLE |
| XXXXX | 1 | Dave Giusti | 55.7 | HOU |
| XXXXX | 0.99 | Jose Santiago | 50 | BOS |
| XXXXX | 0.94 | Bob Veale | 77.3 | PIT |
| XXXXX | 0.94 | Milt Pappas | 53.7 | CIN |
| XXXXX | 0.9 | Sonny Siebert | 62 | CLE |
_