| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dave Stewart | OAK | 7.8 | 199008150_BOS_OAK |
| Chuck Finley | ANA | 6.45 | 199008170_ANA_BOS |
| Frank Viola | NYN | 4.74 | 199008170_NYN_SFN |
| Ed Whitson | SDN | 4.7 | 199008160_WAS_SDN |
| Danny Darwin | HOU | 4.01 | 199008160_HOU_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Morris | DET | -5.67 | 199008170_CLE_DET |
| Andy Hawkins | NYA | -4.66 | 199008170_SEA_NYA |
| Mike Bielecki | CHN | -3.42 | 199008150_HOU_CHN |
| David West | MIN | -2.25 | 199008150_MIN_CLE |
| Mark Langston | ANA | -1.03 | 199008150_NYA_ANA |
Based on accumulated WAA for this season up to 1990-08-17.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.52 | Roger Clemens | 192 | BOS |
| +004+ | 6.69 | Dave Stewart | 200 | OAK |
| +005+ | 6.67 | Chuck Finley | 177 | ANA |
| +008+ | 5.25 | Ed Whitson | 174 | SDN |
| +010+ | 4.91 | Danny Darwin | 106.3 | HOU |
| +012+ | 4.8 | Bill Swift | 101.7 | SEA |
| +014+ | 4.68 | John Tudor | 132.3 | SLN |
| +016+ | 4.57 | Frank Viola | 174.3 | NYN |
| +027+ | 3.86 | Dennis Martinez | 181.7 | WAS |
| +026+ | 3.86 | Doug Drabek | 165.7 | PIT |
| +033+ | 3.56 | Norm Charlton | 98 | CIN |
| +035+ | 3.44 | Tom Browning | 183 | CIN |
| +039+ | 3.23 | Ramon Martinez | 165.7 | LAN |
| +041+ | 3.15 | Bob Welch | 174.7 | OAK |
| +046+ | 3.03 | Dave Stieb | 147.3 | TOR |
| +048+ | 3.01 | Oil Can Boyd | 141.7 | WAS |
| +058+ | 2.73 | Bob Tewksbury | 97 | SLN |
| +061+ | 2.59 | Tom Candiotti | 162 | CLE |
| +066+ | 2.54 | Greg Hibbard | 149.3 | CHA |
| +065+ | 2.54 | Ben McDonald | 46.3 | BAL |
| +067+ | 2.53 | Kirk McCaskill | 121.7 | ANA |
| +070+ | 2.47 | Randy Johnson | 164 | SEA |
| +083+ | 2.12 | Mike Morgan | 162.7 | LAN |
| +085+ | 2.11 | Mark Gardner | 136.3 | WAS |
| +089+ | 2.1 | Tom Bolton | 62 | BOS |
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