| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tom Seaver | NYN | 8.93 | 197009160_NYN_WAS |
| Jim Palmer | BAL | 7.35 | 197009160_BAL_TEX |
| Clyde Wright | ANA | 3.24 | 197009160_ANA_MIN |
| Fritz Peterson | NYA | 2.95 | 197009160_BOS_NYA |
| Ray Culp | BOS | 2.71 | 197009151_BOS_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Frank Reberger | SFN | -4.68 | 197009140_ATL_SFN |
| Bill Stoneman | WAS | -1.92 | 197009140_NYN_WAS |
| Lew Krausse | MIL | -1.31 | 197009160_OAK_MIL |
| Mike McQueen | ATL | -1.12 | 197009140_ATL_SFN |
| Casey Cox | TEX | -1.1 | 197009150_BAL_TEX |
Based on accumulated WAA for this season up to 1970-09-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +007+ | 8.11 | Sam McDowell | 283.3 | CLE |
| +009+ | 7.89 | Tom Seaver | 281 | NYN |
| +013+ | 7.23 | Jim Palmer | 279.3 | BAL |
| +025+ | 5.43 | Jim Perry | 249.3 | MIN |
| +027+ | 5.3 | Clyde Wright | 236.7 | ANA |
| +031+ | 5.15 | Diego Segui | 158.7 | OAK |
| +034+ | 4.77 | Bob Gibson | 277 | SLN |
| +037+ | 4.71 | Fritz Peterson | 234 | NYA |
| +041+ | 4.41 | Gary Nolan | 237.7 | CIN |
| +042+ | 4.39 | Tom Hall | 132.7 | MIN |
| +046+ | 4.26 | Gaylord Perry | 298.7 | SFN |
| +051+ | 4.06 | Tommy John | 246.3 | CHA |
| +053+ | 4.02 | Ray Culp | 233.3 | BOS |
| +055+ | 3.97 | Dick Bosman | 203.7 | TEX |
| +058+ | 3.83 | Dave McNally | 272 | BAL |
| +059+ | 3.78 | Wayne Simpson | 176 | CIN |
| +062+ | 3.64 | Mel Stottlemyre | 247.7 | NYA |
| +069+ | 3.42 | Stan Bahnsen | 219.7 | NYA |
| +071+ | 3.24 | Bob Johnson | 191 | KCA |
| +072+ | 3.16 | Ken Holtzman | 261.7 | CHN |
| +081+ | 2.72 | Ferguson Jenkins | 277.3 | CHN |
| +080+ | 2.72 | Eddie Fisher | 120.3 | ANA |
| +082+ | 2.71 | Steve Hargan | 116.7 | CLE |
| +086+ | 2.6 | Milt Pappas | 162 | TOT |
| +088+ | 2.56 | Jerry Koosman | 190 | NYN |
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