| Starter | Tm | Tier | Game |
|---|---|---|---|
| Steve Hargan | CLE | -4.32 | 197004300_CLE_MIN |
| Bill Stoneman | WAS | -4.25 | 197004300_WAS_LAN |
| Lew Krausse | MIL | -3.16 | 197004290_MIL_TEX |
| Gary Peters | BOS | -2.95 | 197004300_OAK_BOS |
| Tommie Sisk | CHA | -2.68 | 197004290_BAL_CHA |
Based on accumulated WAA for this season up to 1970-04-30.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +005+ | 2.29 | Wayne Simpson | 31 | CIN |
| +008+ | 2.1 | Jim Merritt | 50.3 | CIN |
| +009+ | 2.09 | Mickey Lolich | 58.3 | DET |
| +011+ | 1.79 | Jim Hunter | 39 | OAK |
| +012+ | 1.75 | Nolan Ryan | 26 | NYN |
| +014+ | 1.67 | Tom Seaver | 42.7 | NYN |
| +016+ | 1.53 | Tom Phoebus | 22.3 | BAL |
| +019+ | 1.46 | Claude Osteen | 40 | LAN |
| +020+ | 1.44 | Jim Kaat | 37.3 | MIN |
| +023+ | 1.41 | Jim Perry | 37 | MIN |
| +024+ | 1.41 | Steve Blass | 39 | PIT |
| +025+ | 1.39 | Joe Niekro | 38 | DET |
| XXXXX | 1.22 | Gary Gentry | 29.7 | NYN |
| XXXXX | 1.18 | Sam McDowell | 39.3 | CLE |
| XXXXX | 1.15 | Joe Coleman | 34.7 | TEX |
| XXXXX | 1.15 | George Culver | 32.7 | SLN |
| XXXXX | 1.11 | Bill Hands | 36.3 | CHN |
| XXXXX | 1.02 | Gary Nolan | 35.7 | CIN |
| XXXXX | 0.93 | Mike Torrez | 27.7 | SLN |
| XXXXX | 0.92 | Jerry Koosman | 38.7 | NYN |
| XXXXX | 0.88 | Dave Roberts | 19.3 | SDN |
| XXXXX | 0.83 | Woodie Fryman | 26.3 | PHI |
| XXXXX | 0.83 | Don Sutton | 40 | LAN |
| XXXXX | 0.82 | Jim Lonborg | 21 | BOS |
| XXXXX | 0.79 | George Stone | 37.7 | ATL |
_