| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tom Seaver | NYN | 14.19 | 197007170_NYN_LAN |
| Andy Messersmith | ANA | 6.16 | 197007160_ANA_TEX |
| Claude Osteen | LAN | 4.12 | 197007180_NYN_LAN |
| Jim Perry | MIN | 3.12 | 197007180_MIN_BAL |
| Bob Gibson | SLN | 3.07 | 197007180_ATL_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Gene Brabender | MIL | -4.06 | 197007170_MIL_BOS |
| Clay Kirby | SDN | -2.3 | 197007170_PHI_SDN |
| Gary Peters | BOS | -2.12 | 197007180_MIL_BOS |
| Nelson Briles | SLN | -1.67 | 197007170_ATL_SLN |
| Chuck Dobson | OAK | -1.07 | 197007161_OAK_NYA |
Based on accumulated WAA for this season up to 1970-07-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 6.98 | Tom Seaver | 181.3 | NYN |
| +010+ | 5.43 | Sam McDowell | 178 | CLE |
| +016+ | 4.3 | Wayne Simpson | 155.3 | CIN |
| +017+ | 4.28 | Jim Palmer | 157.7 | BAL |
| +018+ | 4.25 | Clyde Wright | 150.7 | ANA |
| +020+ | 4.04 | Andy Messersmith | 153 | ANA |
| +021+ | 3.97 | Claude Osteen | 169.3 | LAN |
| +023+ | 3.92 | Ray Culp | 140.7 | BOS |
| +029+ | 3.68 | Danny Coombs | 105.3 | SDN |
| +032+ | 3.54 | Jim McGlothlin | 129 | CIN |
| +046+ | 2.59 | Pat Jarvis | 155.7 | ATL |
| +047+ | 2.58 | Stan Bahnsen | 141 | NYA |
| +049+ | 2.47 | Tom Hall | 62.7 | MIN |
| +051+ | 2.42 | Jim Merritt | 162.3 | CIN |
| +053+ | 2.4 | Eddie Fisher | 65.7 | ANA |
| +057+ | 2.22 | Tom Phoebus | 82 | BAL |
| +059+ | 2.17 | Joe Niekro | 130.7 | DET |
| +064+ | 2.11 | Diego Segui | 77.3 | OAK |
| +066+ | 2.08 | Dave Giusti | 63.7 | PIT |
| +067+ | 2.06 | Jim Perry | 148.7 | MIN |
| +068+ | 2.05 | Don Sutton | 164.3 | LAN |
| +070+ | 1.99 | Gary Gentry | 124.7 | NYN |
| +075+ | 1.89 | Jerry Koosman | 103 | NYN |
| +078+ | 1.83 | Bert Blyleven | 51.3 | MIN |
| +081+ | 1.78 | Bill Zepp | 64.3 | MIN |
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