| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 13.04 | 199008140_BOS_OAK |
| Dave Stewart | OAK | 7.8 | 199008150_BOS_OAK |
| Ramon Martinez | LAN | 3.36 | 199008141_LAN_NYN |
| Dennis Martinez | WAS | 3.16 | 199008140_WAS_SDN |
| Doug Drabek | PIT | 3.03 | 199008141_ATL_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walt Terrell | DET | -5.1 | 199008130_DET_CLE |
| Mike Bielecki | CHN | -3.42 | 199008150_HOU_CHN |
| David West | MIN | -2.25 | 199008150_MIN_CLE |
| Jim Abbott | ANA | -1.23 | 199008140_NYA_ANA |
| Todd Stottlemyre | TOR | -1.2 | 199008140_TOR_CHA |
Based on accumulated WAA for this season up to 1990-08-15.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.57 | Roger Clemens | 192 | BOS |
| +003+ | 6.74 | Dave Stewart | 200 | OAK |
| +007+ | 5.9 | Chuck Finley | 168 | ANA |
| +009+ | 4.73 | Ed Whitson | 165 | SDN |
| +010+ | 4.72 | John Tudor | 132.3 | SLN |
| +011+ | 4.68 | Frank Viola | 168.3 | NYN |
| +012+ | 4.6 | Bill Swift | 94.7 | SEA |
| +014+ | 4.59 | Danny Darwin | 100.3 | HOU |
| +021+ | 3.91 | Dennis Martinez | 181.7 | WAS |
| +022+ | 3.91 | Doug Drabek | 165.7 | PIT |
| +032+ | 3.59 | Norm Charlton | 98 | CIN |
| +034+ | 3.48 | Tom Browning | 176 | CIN |
| +037+ | 3.27 | Ramon Martinez | 165.7 | LAN |
| +043+ | 3.1 | Bob Welch | 166.7 | OAK |
| +044+ | 3.09 | Mark Gardner | 132.7 | WAS |
| +055+ | 2.72 | Oil Can Boyd | 135.7 | WAS |
| +059+ | 2.56 | Kirk McCaskill | 121.7 | ANA |
| +060+ | 2.55 | Ben McDonald | 46.3 | BAL |
| +065+ | 2.53 | Dave Stieb | 141.3 | TOR |
| +066+ | 2.52 | Tom Candiotti | 154 | CLE |
| +068+ | 2.5 | Randy Johnson | 164 | SEA |
| +084+ | 2.15 | Mike Morgan | 162.7 | LAN |
| +086+ | 2.11 | Tom Bolton | 62 | BOS |
| +092+ | 2.01 | Kevin Appier | 120 | KCA |
| +093+ | 2.01 | Jack Armstrong | 150.3 | CIN |
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