| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 14.31 | 199008190_ANA_BOS |
| Dave Stewart | OAK | 8.28 | 199008200_OAK_CHA |
| Ed Whitson | SDN | 5.26 | 199008210_NYN_SDN |
| Danny Darwin | HOU | 4.3 | 199008210_HOU_PIT |
| Doug Drabek | PIT | 3.49 | 199008190_PIT_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jeff Robinson | DET | -5.36 | 199008200_ANA_DET |
| Mike Bielecki | CHN | -3.66 | 199008200_CHN_CIN |
| David West | MIN | -1.98 | 199008200_MIN_KCA |
| Jim Abbott | ANA | -1.72 | 199008190_ANA_BOS |
| Dennis Rasmussen | SDN | -1.13 | 199008190_PHI_SDN |
Based on accumulated WAA for this season up to 1990-08-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.9 | Roger Clemens | 199 | BOS |
| +005+ | 6.67 | Chuck Finley | 177 | ANA |
| +007+ | 6.28 | Dave Stewart | 207 | OAK |
| +008+ | 6.03 | Ed Whitson | 183 | SDN |
| +009+ | 5.49 | Danny Darwin | 115.3 | HOU |
| +012+ | 4.81 | Bill Swift | 101.7 | SEA |
| +017+ | 4.56 | Frank Viola | 174.3 | NYN |
| +020+ | 4.37 | Dennis Martinez | 189.7 | WAS |
| +022+ | 4.23 | Doug Drabek | 172.3 | PIT |
| +031+ | 3.76 | Norm Charlton | 105 | CIN |
| +035+ | 3.54 | Ramon Martinez | 174 | LAN |
| +036+ | 3.42 | Tom Browning | 183 | CIN |
| +046+ | 3.16 | Bob Welch | 174.7 | OAK |
| +047+ | 3.15 | Greg Hibbard | 156.3 | CHA |
| +050+ | 3 | Dave Stieb | 147.3 | TOR |
| +064+ | 2.69 | Bob Tewksbury | 97 | SLN |
| +067+ | 2.59 | Tom Candiotti | 162 | CLE |
| +070+ | 2.54 | Ben McDonald | 53.3 | BAL |
| +071+ | 2.51 | Mike Morgan | 169.7 | LAN |
| +072+ | 2.51 | Randy Johnson | 171.3 | SEA |
| +073+ | 2.5 | Oil Can Boyd | 145.3 | WAS |
| +074+ | 2.47 | Kirk McCaskill | 128 | ANA |
| +080+ | 2.31 | Kevin Appier | 126 | KCA |
| +090+ | 2.12 | Mark Gardner | 136.3 | WAS |
| +089+ | 2.12 | Zane Smith | 155 | TOT |
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