| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Palmer | BAL | 7.44 | 197009030_BAL_NYA |
| Jim Perry | MIN | 5.05 | 197009050_MIN_ANA |
| Diego Segui | OAK | 2.94 | 197009030_CHA_OAK |
| Mel Stottlemyre | NYA | 2.34 | 197009030_BAL_NYA |
| Ray Culp | BOS | 1.79 | 197009050_BAL_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill Stoneman | WAS | -3.19 | 197009050_WAS_SLN |
| Rich Robertson | SFN | -3.09 | 197009052_SFN_ATL |
| Jerry Janeski | CHA | -2.65 | 197009040_CHA_MIL |
| Mike McQueen | ATL | -1.2 | 197009052_SFN_ATL |
| Skip Lockwood | MIL | -1.19 | 197009040_CHA_MIL |
Based on accumulated WAA for this season up to 1970-09-05.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +006+ | 8.47 | Tom Seaver | 261 | NYN |
| +008+ | 7.93 | Sam McDowell | 268.3 | CLE |
| +012+ | 6.98 | Jim Palmer | 254 | BAL |
| +021+ | 5.49 | Jim Perry | 237.3 | MIN |
| +032+ | 4.68 | Clyde Wright | 216 | ANA |
| +033+ | 4.6 | Diego Segui | 147.3 | OAK |
| +038+ | 4.5 | Dick Bosman | 190 | TEX |
| +039+ | 4.48 | Tommy John | 245.3 | CHA |
| +041+ | 4.25 | Andy Messersmith | 192.7 | ANA |
| +044+ | 4.06 | Fritz Peterson | 210 | NYA |
| +048+ | 3.83 | Gary Nolan | 215.3 | CIN |
| +049+ | 3.78 | Wayne Simpson | 173.7 | CIN |
| +053+ | 3.62 | Ray Culp | 218.7 | BOS |
| +054+ | 3.54 | Bob Gibson | 250 | SLN |
| +057+ | 3.42 | Milt Pappas | 147.7 | TOT |
| +059+ | 3.4 | Mel Stottlemyre | 230.7 | NYA |
| +062+ | 3.3 | Stan Bahnsen | 206.3 | NYA |
| +064+ | 3.25 | Dave McNally | 247.7 | BAL |
| +071+ | 2.99 | Tom Hall | 107.7 | MIN |
| +073+ | 2.93 | Ken Holtzman | 246.7 | CHN |
| +075+ | 2.73 | Pat Jarvis | 216.3 | ATL |
| +078+ | 2.64 | Danny Coombs | 160 | SDN |
| +079+ | 2.62 | Jerry Koosman | 172.3 | NYN |
| +081+ | 2.61 | Bill Zepp | 124 | MIN |
| +089+ | 2.36 | Bob Johnson | 173 | KCA |
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