| Starter | Tm | Tier | Game |
|---|---|---|---|
| Juan Marichal | SFN | 13.55 | 196605310_SFN_CIN |
| Sandy Koufax | LAN | 8.71 | 196606010_LAN_SLN |
| Chris Short | PHI | 6.08 | 196605310_PHI_NYN |
| Mel Stottlemyre | NYA | 5.81 | 196605310_NYA_TEX |
| Jim Maloney | CIN | 5.4 | 196606010_HOU_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ernie Broglio | CHN | -3.07 | 196605310_CHN_PIT |
| Jerry Stephenson | BOS | -2.92 | 196606020_TEX_BOS |
| Wade Blasingame | ATL | -1.59 | 196605310_LAN_ATL |
| Fred Talbot | OAK | -1.44 | 196605310_DET_OAK |
| Bill Monbouquette | DET | -1.29 | 196605310_DET_OAK |
Based on accumulated WAA for this season up to 1966-06-02.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.43 | Juan Marichal | 101 | SFN |
| +003+ | 3.78 | Sandy Koufax | 91.3 | LAN |
| +006+ | 3.02 | Jim Bunning | 88.7 | PHI |
| +008+ | 2.9 | Al Jackson | 49 | SLN |
| +009+ | 2.71 | Bob Gibson | 93.3 | SLN |
| +012+ | 2.52 | Mike Cuellar | 53.3 | HOU |
| +014+ | 2.29 | Mel Stottlemyre | 87 | NYA |
| +018+ | 2.08 | Pete Richert | 84.3 | TEX |
| +020+ | 2.01 | Claude Osteen | 87.3 | LAN |
| +021+ | 1.99 | Dick Ellsworth | 75.7 | CHN |
| +022+ | 1.97 | Jim Maloney | 59 | CIN |
| +028+ | 1.75 | Luis Tiant | 53 | CLE |
| +034+ | 1.56 | Tommy John | 73.3 | CHA |
| +035+ | 1.54 | Dave Giusti | 62.7 | HOU |
| +041+ | 1.46 | Chris Short | 84.7 | PHI |
| +042+ | 1.4 | Phil Ortega | 67.3 | TEX |
| +046+ | 1.3 | Clay Carroll | 36.7 | ATL |
| XXXXX | 1.24 | Don Sutton | 80 | LAN |
| XXXXX | 1.22 | Steve Barber | 54.3 | BAL |
| XXXXX | 1.19 | Whitey Ford | 40 | NYA |
| XXXXX | 1.1 | Bob Veale | 84.3 | PIT |
| XXXXX | 1.05 | Vern Law | 40.3 | PIT |
| XXXXX | 1.01 | Dennis Ribant | 35.3 | NYN |
| XXXXX | 1 | Rollie Sheldon | 56.7 | OAK |
| XXXXX | 0.99 | Jim Grant | 69.3 | MIN |
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