| Starter | Tm | Tier | Game |
|---|---|---|---|
| Juan Marichal | SFN | 10.91 | 196605260_PHI_SFN |
| Jim Bunning | PHI | 6.96 | 196605260_PHI_SFN |
| Jim Maloney | CIN | 5.91 | 196605270_CIN_SLN |
| Mel Stottlemyre | NYA | 4.42 | 196605270_CHA_NYA |
| Sam McDowell | CLE | 4.37 | 196605250_CLE_DET |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Art Mahaffey | SLN | -3.61 | 196605270_CIN_SLN |
| Diego Segui | TEX | -3.27 | 196605250_OAK_TEX |
| Jerry Stephenson | BOS | -2.54 | 196605250_MIN_BOS |
| Ernie Broglio | CHN | -2.25 | 196605270_ATL_CHN |
| Wade Blasingame | ATL | -1.84 | 196605270_ATL_CHN |
Based on accumulated WAA for this season up to 1966-05-27.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.33 | Juan Marichal | 92 | SFN |
| +006+ | 2.59 | Mel Stottlemyre | 80 | NYA |
| +007+ | 2.53 | Chris Short | 80.3 | PHI |
| +008+ | 2.48 | Jim Bunning | 79.7 | PHI |
| +010+ | 2.37 | Sandy Koufax | 73.3 | LAN |
| +012+ | 2.2 | Mike Cuellar | 46.3 | HOU |
| +016+ | 2 | Bob Gibson | 84.3 | SLN |
| +017+ | 1.93 | Claude Osteen | 81.3 | LAN |
| +019+ | 1.88 | Al Jackson | 33 | SLN |
| +023+ | 1.71 | Jim Maloney | 50 | CIN |
| +024+ | 1.67 | Tommy John | 60.3 | CHA |
| +026+ | 1.58 | Sam McDowell | 68.3 | CLE |
| +027+ | 1.55 | Pete Richert | 75.3 | TEX |
| +029+ | 1.49 | Clay Carroll | 31 | ATL |
| +033+ | 1.35 | Jim O'Toole | 34.3 | CIN |
| +035+ | 1.34 | Luis Tiant | 44.7 | CLE |
| +034+ | 1.34 | John O'Donoghue | 24.3 | CLE |
| +036+ | 1.33 | Dick Ellsworth | 67.7 | CHN |
| XXXXX | 1.19 | Whitey Ford | 40 | NYA |
| XXXXX | 1 | Jose Santiago | 50 | BOS |
| XXXXX | 0.94 | Milt Pappas | 53.7 | CIN |
| XXXXX | 0.93 | Bill Hands | 45.7 | CHN |
| XXXXX | 0.92 | Bob Veale | 77.3 | PIT |
| XXXXX | 0.91 | Sonny Siebert | 62 | CLE |
| XXXXX | 0.87 | Phil Ortega | 52.7 | TEX |
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