| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Bunning | PHI | 10.68 | 196606110_SLN_PHI |
| Juan Marichal | SFN | 9.2 | 196606120_LAN_SFN |
| Mel Stottlemyre | NYA | 6.04 | 196606121_NYA_DET |
| Sam McDowell | CLE | 4.45 | 196606110_TEX_CLE |
| Bob Gibson | SLN | 4.44 | 196606110_SLN_PHI |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Diego Segui | TEX | -2.48 | 196606130_TEX_DET |
| Ernie Broglio | CHN | -2.4 | 196606130_CHN_SFN |
| Jack Fisher | NYN | -1.96 | 196606120_CIN_NYN |
| Earl Wilson | BOS | -1.85 | 196606120_BOS_BAL |
| Wade Blasingame | ATL | -1.64 | 196606132_ATL_PHI |
Based on accumulated WAA for this season up to 1966-06-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.11 | Sandy Koufax | 109.3 | LAN |
| +003+ | 4.45 | Jim Bunning | 113.7 | PHI |
| +004+ | 4.37 | Juan Marichal | 120 | SFN |
| +007+ | 3.65 | Bob Gibson | 118 | SLN |
| +009+ | 3.38 | Mike Cuellar | 67.3 | HOU |
| +013+ | 2.75 | Tommy John | 87.3 | CHA |
| +017+ | 2.46 | Claude Osteen | 99.7 | LAN |
| +019+ | 2.32 | Mel Stottlemyre | 105.3 | NYA |
| +021+ | 2.2 | Dennis Ribant | 54.3 | NYN |
| +023+ | 2.16 | Al Jackson | 68.3 | SLN |
| +022+ | 2.16 | Sam McDowell | 74.7 | CLE |
| +029+ | 1.98 | Phil Ortega | 84.3 | TEX |
| +030+ | 1.94 | Dick Ellsworth | 97.7 | CHN |
| +031+ | 1.91 | Jim Maloney | 73.7 | CIN |
| +033+ | 1.88 | Don Nottebart | 34 | CIN |
| +037+ | 1.76 | Jim Kaat | 94 | MIN |
| +040+ | 1.67 | Chris Short | 110.3 | PHI |
| +041+ | 1.64 | Steve Barber | 74.7 | BAL |
| +042+ | 1.63 | Pete Richert | 106 | TEX |
| +047+ | 1.56 | Joe Horlen | 74.7 | CHA |
| +051+ | 1.49 | Ralph Terry | 42.3 | OAK |
| +053+ | 1.48 | Gary Bell | 87.7 | CLE |
| +054+ | 1.47 | Jack Lamabe | 49 | CHA |
| +056+ | 1.38 | Luis Tiant | 56.3 | CLE |
| +059+ | 1.34 | Gary Peters | 69 | CHA |
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