| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Bunning | PHI | 8.2 | 196605301_PHI_NYN |
| Sandy Koufax | LAN | 6.57 | 196605280_NYN_LAN |
| Bob Gibson | SLN | 3.38 | 196605300_HOU_SLN |
| Milt Pappas | CIN | 2.74 | 196605300_SFN_CIN |
| Jim Kaat | MIN | 1.63 | 196605291_MIN_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Diego Segui | TEX | -3.03 | 196605302_NYA_TEX |
| Jerry Stephenson | BOS | -2.67 | 196605290_BOS_TEX |
| Jack Lamabe | CHA | -2.38 | 196605302_BOS_CHA |
| Bob Buhl | PHI | -2.28 | 196605302_PHI_NYN |
| Ray Sadecki | SFN | -1.31 | 196605300_SFN_CIN |
Based on accumulated WAA for this season up to 1966-05-30.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.29 | Juan Marichal | 92 | SFN |
| +005+ | 3.01 | Sandy Koufax | 82.3 | LAN |
| +006+ | 2.91 | Jim Bunning | 88.7 | PHI |
| +008+ | 2.61 | Bob Gibson | 93.3 | SLN |
| +009+ | 2.47 | Mel Stottlemyre | 80 | NYA |
| +012+ | 2.32 | Al Jackson | 42 | SLN |
| +013+ | 2.23 | Tommy John | 69.3 | CHA |
| +015+ | 2.17 | Mike Cuellar | 46.3 | HOU |
| +018+ | 2.05 | Chris Short | 82.7 | PHI |
| +019+ | 1.88 | Claude Osteen | 81.3 | LAN |
| +020+ | 1.87 | Dick Ellsworth | 75.7 | CHN |
| +025+ | 1.72 | Luis Tiant | 52.7 | CLE |
| +027+ | 1.69 | Jim Maloney | 50 | CIN |
| +032+ | 1.6 | Sam McDowell | 68.3 | CLE |
| +033+ | 1.51 | Pete Richert | 75.3 | TEX |
| +035+ | 1.45 | Clay Carroll | 33.7 | ATL |
| +041+ | 1.35 | John O'Donoghue | 24.3 | CLE |
| +044+ | 1.3 | Jim Kaat | 71.3 | MIN |
| XXXXX | 1.24 | Jim O'Toole | 41.3 | CIN |
| XXXXX | 1.17 | Steve Barber | 54.3 | BAL |
| XXXXX | 1.13 | Whitey Ford | 40 | NYA |
| XXXXX | 1.06 | Gary Bell | 66.7 | CLE |
| XXXXX | 1 | Phil Ortega | 60.3 | TEX |
| XXXXX | 0.97 | Dave Giusti | 55.7 | HOU |
| XXXXX | 0.93 | Sonny Siebert | 62 | CLE |
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