| Starter | Tm | Tier | Game |
|---|---|---|---|
| Gene Brabender | MIL | -4.06 | 197007170_MIL_BOS |
| Clay Kirby | SDN | -3.44 | 197007120_LAN_SDN |
| Nelson Briles | SLN | -1.67 | 197007170_ATL_SLN |
| Chuck Dobson | OAK | -1.28 | 197007121_MIL_OAK |
| Don Wilson | HOU | -0.7 | 197007160_CHN_HOU |
Based on accumulated WAA for this season up to 1970-07-17.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 6.97 | Tom Seaver | 181.3 | NYN |
| +009+ | 5.42 | Sam McDowell | 178 | CLE |
| +016+ | 4.31 | Wayne Simpson | 155.3 | CIN |
| +017+ | 4.28 | Jim Palmer | 157.7 | BAL |
| +018+ | 4.23 | Clyde Wright | 150.7 | ANA |
| +019+ | 4.02 | Andy Messersmith | 153 | ANA |
| +021+ | 3.91 | Ray Culp | 140.7 | BOS |
| +025+ | 3.68 | Danny Coombs | 105.3 | SDN |
| +028+ | 3.6 | Claude Osteen | 163 | LAN |
| +030+ | 3.55 | Jim McGlothlin | 129 | CIN |
| +045+ | 2.63 | Pat Jarvis | 155.7 | ATL |
| +047+ | 2.58 | Stan Bahnsen | 141 | NYA |
| +050+ | 2.47 | Tom Hall | 62.7 | MIN |
| +052+ | 2.39 | Eddie Fisher | 65.7 | ANA |
| +056+ | 2.23 | Dave Giusti | 60.7 | PIT |
| +059+ | 2.22 | Tom Phoebus | 82 | BAL |
| +061+ | 2.16 | Joe Niekro | 130.7 | DET |
| +064+ | 2.1 | Diego Segui | 77.3 | OAK |
| +065+ | 2.07 | Jim Perry | 142 | MIN |
| +067+ | 2.04 | Don Sutton | 164.3 | LAN |
| +069+ | 1.99 | Gary Gentry | 124.7 | NYN |
| +074+ | 1.89 | Jerry Koosman | 103 | NYN |
| +078+ | 1.83 | Bert Blyleven | 51.3 | MIN |
| +080+ | 1.82 | Jim Merritt | 153.3 | CIN |
| +082+ | 1.78 | Bill Zepp | 64.3 | MIN |
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