| Starter | Tm | Tier | Game |
|---|---|---|---|
| Orel Hershiser | LAN | 11.08 | 198709020_PHI_LAN |
| Charlie Leibrandt | KCA | 7.31 | 198709020_MIL_KCA |
| Mike Scott | HOU | 5.23 | 198709020_CHN_HOU |
| Frank Viola | MIN | 4.99 | 198709040_MIL_MIN |
| Roger Clemens | BOS | 4.01 | 198709040_CLE_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tom Browning | CIN | -4.79 | 198709040_CIN_CHN |
| Al Nipper | BOS | -1.87 | 198709020_BOS_MIN |
| Chris Bosio | MIL | -1.63 | 198709030_MIL_KCA |
| Jerry Reuss | ANA | -1.45 | 198709020_ANA_TOR |
| Mike Moore | SEA | -0.58 | 198709040_SEA_TOR |
Based on accumulated WAA for this season up to 1987-09-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 8.49 | Orel Hershiser | 222 | LAN |
| +006+ | 7.23 | Charlie Leibrandt | 209 | KCA |
| +007+ | 6.84 | Frank Viola | 217 | MIN |
| +008+ | 6.71 | Jimmy Key | 210.7 | TOR |
| +009+ | 6.34 | Mike Scott | 208.7 | HOU |
| +012+ | 6.28 | Rick Reuschel | 191 | TOT |
| +013+ | 6.02 | Nolan Ryan | 168 | HOU |
| +015+ | 5.52 | Roger Clemens | 230.3 | BOS |
| +019+ | 5.2 | Bret Saberhagen | 209.7 | KCA |
| +022+ | 4.93 | Bob Welch | 205.3 | LAN |
| +024+ | 4.83 | Dwight Gooden | 141.7 | NYN |
| +030+ | 4.47 | Mike Dunne | 125 | PIT |
| +035+ | 4.3 | Jack Morris | 206.7 | DET |
| +037+ | 4.1 | Dave Stewart | 212.7 | OAK |
| +040+ | 3.9 | Dave Dravecky | 160.7 | TOT |
| +057+ | 3.15 | Atlee Hammaker | 145 | SFN |
| +064+ | 3 | Danny Darwin | 177.7 | HOU |
| +066+ | 2.99 | Jim Clancy | 205 | TOR |
| +065+ | 2.99 | Gene Nelson | 106.3 | OAK |
| +076+ | 2.74 | Danny Cox | 163.7 | SLN |
| +080+ | 2.68 | Rick Rhoden | 172.7 | NYA |
| +084+ | 2.61 | Mark Langston | 230 | SEA |
| +086+ | 2.53 | Zane Smith | 211.7 | ATL |
| +087+ | 2.53 | Doyle Alexander | 155.3 | TOT |
| +088+ | 2.52 | Eric Nolte | 43.3 | SDN |
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