| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tom Seaver | NYN | 11.59 | 197009071_WAS_NYN |
| Sam McDowell | CLE | 9.27 | 197009071_BOS_CLE |
| Jim Palmer | BAL | 7.12 | 197009070_BAL_DET |
| Jim Perry | MIN | 5.2 | 197009090_OAK_MIN |
| Clyde Wright | ANA | 3.49 | 197009092_ANA_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Grant Jackson | PHI | -4.99 | 197009092_PHI_NYN |
| Frank Reberger | SFN | -4.43 | 197009080_CIN_SFN |
| Jerry Janeski | CHA | -2.24 | 197009091_ANA_CHA |
| Bill Stoneman | WAS | -2.17 | 197009090_WAS_CHN |
| Mike Kekich | NYA | -1.34 | 197009070_NYA_TEX |
Based on accumulated WAA for this season up to 1970-09-09.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +007+ | 8.28 | Tom Seaver | 268 | NYN |
| +009+ | 7.96 | Sam McDowell | 275.3 | CLE |
| +015+ | 6.51 | Jim Palmer | 260.3 | BAL |
| +020+ | 6.02 | Jim Perry | 245.3 | MIN |
| +029+ | 4.9 | Diego Segui | 152.7 | OAK |
| +036+ | 4.77 | Clyde Wright | 227.7 | ANA |
| +037+ | 4.69 | Fritz Peterson | 219 | NYA |
| +041+ | 4.29 | Andy Messersmith | 194.7 | ANA |
| +043+ | 4.26 | Dick Bosman | 197 | TEX |
| +046+ | 4.17 | Tommy John | 246.3 | CHA |
| +048+ | 4 | Gary Nolan | 221.3 | CIN |
| +050+ | 3.91 | Bob Gibson | 259 | SLN |
| +051+ | 3.81 | Wayne Simpson | 173.7 | CIN |
| +056+ | 3.62 | Mel Stottlemyre | 239.7 | NYA |
| +057+ | 3.61 | Ray Culp | 218.7 | BOS |
| +060+ | 3.52 | Tom Hall | 115.7 | MIN |
| +066+ | 3.33 | Stan Bahnsen | 206.3 | NYA |
| +068+ | 3.2 | Bob Johnson | 182 | KCA |
| +069+ | 3.18 | Ken Holtzman | 253.7 | CHN |
| +073+ | 2.99 | Dave McNally | 254 | BAL |
| +078+ | 2.77 | Gaylord Perry | 280.7 | SFN |
| +082+ | 2.62 | Jerry Koosman | 172.3 | NYN |
| +083+ | 2.61 | Milt Pappas | 152.3 | TOT |
| +086+ | 2.54 | Ferguson Jenkins | 269.3 | CHN |
| +091+ | 2.4 | Marcelino Lopez | 54 | BAL |
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