| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Perry | MIN | 5.39 | 197009130_CHA_MIN |
| Ray Culp | BOS | 2.71 | 197009151_BOS_NYA |
| Mel Stottlemyre | NYA | 1.74 | 197009130_NYA_CLE |
| Dave McNally | BAL | 1.7 | 197009150_BAL_TEX |
| Wayne Simpson | CIN | 1.64 | 197009130_CIN_SDN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Frank Reberger | SFN | -4.68 | 197009140_ATL_SFN |
| Bill Stoneman | WAS | -1.92 | 197009140_NYN_WAS |
| Clay Kirby | SDN | -1.15 | 197009130_CIN_SDN |
| 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 1970-09-15.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +007+ | 8.15 | Sam McDowell | 283.3 | CLE |
| +009+ | 7.9 | Tom Seaver | 274 | NYN |
| +014+ | 7.03 | Jim Palmer | 272.3 | BAL |
| +024+ | 5.47 | Jim Perry | 249.3 | MIN |
| +028+ | 5.17 | Diego Segui | 158.7 | OAK |
| +034+ | 4.72 | Clyde Wright | 227.7 | ANA |
| +036+ | 4.65 | Fritz Peterson | 226 | NYA |
| +040+ | 4.41 | Tom Hall | 132.7 | MIN |
| +043+ | 4.3 | Gaylord Perry | 298.7 | SFN |
| +047+ | 4.24 | Andy Messersmith | 194.7 | ANA |
| +048+ | 4.21 | Bob Gibson | 268 | SLN |
| +050+ | 4.1 | Tommy John | 246.3 | CHA |
| +051+ | 4.09 | Gary Nolan | 229.3 | CIN |
| +052+ | 4.05 | Ray Culp | 233.3 | BOS |
| +054+ | 4 | Dick Bosman | 203.7 | TEX |
| +056+ | 3.85 | Dave McNally | 272 | BAL |
| +058+ | 3.81 | Wayne Simpson | 176 | CIN |
| +061+ | 3.67 | Mel Stottlemyre | 247.7 | NYA |
| +069+ | 3.45 | Stan Bahnsen | 219.7 | NYA |
| +071+ | 3.27 | Bob Johnson | 191 | KCA |
| +072+ | 3.2 | Ken Holtzman | 261.7 | CHN |
| +079+ | 2.91 | Milt Pappas | 158.3 | TOT |
| +081+ | 2.76 | Ferguson Jenkins | 277.3 | CHN |
| +082+ | 2.74 | Eddie Fisher | 120.3 | ANA |
| +083+ | 2.72 | Steve Hargan | 116.7 | CLE |
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