| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jerry Koosman | NYN | 4.08 | 197008030_CHN_NYN |
| Jim Perry | MIN | 3.32 | 197008031_MIL_MIN |
| Diego Segui | OAK | 3.06 | 197008021_TEX_OAK |
| Ray Culp | BOS | 3.01 | 197008040_BOS_BAL |
| Danny Coombs | SDN | 2.82 | 197008021_SDN_NYN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike McCormick | NYA | -3.91 | 197008020_NYA_MIL |
| Dan McGinn | WAS | -2.36 | 197008030_PIT_WAS |
| Grant Jackson | PHI | -2.11 | 197008030_SLN_PHI |
| Ron Reed | ATL | -1.85 | 197008032_ATL_HOU |
| Skip Lockwood | MIL | -1.55 | 197008020_NYA_MIL |
Based on accumulated WAA for this season up to 1970-08-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +005+ | 7.53 | Tom Seaver | 207.3 | NYN |
| +007+ | 7.18 | Sam McDowell | 212 | CLE |
| +017+ | 5.18 | Danny Coombs | 129.7 | SDN |
| +020+ | 4.79 | Jim Palmer | 188 | BAL |
| +028+ | 3.92 | Ray Culp | 171 | BOS |
| +029+ | 3.86 | Jim McGlothlin | 154.7 | CIN |
| +030+ | 3.83 | Tommy John | 199.3 | CHA |
| +034+ | 3.66 | Wayne Simpson | 170.7 | CIN |
| +036+ | 3.61 | Diego Segui | 104.7 | OAK |
| +044+ | 3.3 | Jim Perry | 177.3 | MIN |
| +046+ | 3.21 | Mel Stottlemyre | 181.7 | NYA |
| +047+ | 3.17 | Jerry Koosman | 130.3 | NYN |
| +049+ | 3.03 | Clyde Wright | 171 | ANA |
| +050+ | 2.95 | Pat Jarvis | 182.3 | ATL |
| +053+ | 2.87 | Andy Messersmith | 164.7 | ANA |
| +059+ | 2.6 | Gary Nolan | 166 | CIN |
| +061+ | 2.52 | Rudy May | 151.7 | ANA |
| +063+ | 2.49 | Joe Niekro | 156.3 | DET |
| +065+ | 2.48 | Steve Hargan | 58.7 | CLE |
| +066+ | 2.47 | Bert Blyleven | 87.3 | MIN |
| +067+ | 2.42 | Stan Bahnsen | 159 | NYA |
| +071+ | 2.38 | Chuck Taylor | 94 | SLN |
| +074+ | 2.28 | Bill Singer | 96.3 | LAN |
| +075+ | 2.27 | Claude Osteen | 186 | LAN |
| +076+ | 2.25 | Mickey Lolich | 183.3 | DET |
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