| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 12.35 | 196606140_HOU_LAN |
| Juan Marichal | SFN | 9.2 | 196606120_LAN_SFN |
| Mel Stottlemyre | NYA | 6.04 | 196606121_NYA_DET |
| Jim Maloney | CIN | 4.73 | 196606140_CIN_PIT |
| Chris Short | PHI | 4.23 | 196606120_SLN_PHI |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Diego Segui | TEX | -2.48 | 196606130_TEX_DET |
| Ernie Broglio | CHN | -2.4 | 196606130_CHN_SFN |
| Bill Monbouquette | DET | -1.97 | 196606140_TEX_DET |
| Jack Fisher | NYN | -1.96 | 196606120_CIN_NYN |
| Earl Wilson | BOS | -1.85 | 196606120_BOS_BAL |
Based on accumulated WAA for this season up to 1966-06-14.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 5.17 | Sandy Koufax | 117.3 | LAN |
| +003+ | 4.5 | Jim Bunning | 113.7 | PHI |
| +004+ | 4.43 | Juan Marichal | 120 | SFN |
| +009+ | 3.7 | Bob Gibson | 118 | SLN |
| +010+ | 3.41 | Mike Cuellar | 67.3 | HOU |
| +013+ | 2.79 | Tommy John | 87.3 | CHA |
| +014+ | 2.67 | Jim Maloney | 82.7 | CIN |
| +016+ | 2.5 | Claude Osteen | 99.7 | LAN |
| +019+ | 2.39 | Mel Stottlemyre | 105.3 | NYA |
| +021+ | 2.32 | Phil Ortega | 93.3 | TEX |
| +025+ | 2.22 | Dennis Ribant | 54.3 | NYN |
| +024+ | 2.22 | Sam McDowell | 75 | CLE |
| +026+ | 2.19 | Al Jackson | 68.3 | SLN |
| +030+ | 2 | Dick Ellsworth | 97.7 | CHN |
| +034+ | 1.9 | Don Nottebart | 34 | CIN |
| +037+ | 1.8 | Jim Kaat | 94 | MIN |
| +041+ | 1.72 | Chris Short | 110.3 | PHI |
| +042+ | 1.68 | Steve Barber | 74.7 | BAL |
| +043+ | 1.67 | Pete Richert | 106 | TEX |
| +045+ | 1.6 | Joe Horlen | 74.7 | CHA |
| +049+ | 1.52 | Gary Bell | 87.7 | CLE |
| +052+ | 1.5 | Jack Lamabe | 49 | CHA |
| +050+ | 1.5 | Ralph Terry | 42.3 | OAK |
| +060+ | 1.37 | Gary Peters | 69 | CHA |
| +062+ | 1.36 | Hank Aguirre | 48.3 | DET |
_