| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 14.34 | 199008250_BOS_TOR |
| Dave Stewart | OAK | 6.97 | 199008250_OAK_DET |
| Danny Darwin | HOU | 5.03 | 199008260_SLN_HOU |
| Frank Viola | NYN | 4.57 | 199008260_NYN_LAN |
| Dennis Martinez | WAS | 3.91 | 199008240_SDN_WAS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Frank Tanana | DET | -9.36 | 199008250_OAK_DET |
| Mike Bielecki | CHN | -3.07 | 199008250_CHN_ATL |
| David West | MIN | -2.21 | 199008250_MIN_TEX |
| Sergio Valdez | CLE | -1.9 | 199008250_CLE_BAL |
| Jim Abbott | ANA | -1.75 | 199008240_ANA_CHA |
Based on accumulated WAA for this season up to 1990-08-26.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.62 | Roger Clemens | 208 | BOS |
| +006+ | 5.97 | Ed Whitson | 183 | SDN |
| +007+ | 5.84 | Chuck Finley | 182.3 | ANA |
| +008+ | 5.82 | Danny Darwin | 124.3 | HOU |
| +010+ | 5.52 | Dave Stewart | 211 | OAK |
| +011+ | 5.15 | Frank Viola | 189.3 | NYN |
| +015+ | 4.58 | Dennis Martinez | 197.7 | WAS |
| +018+ | 4.43 | Norm Charlton | 113 | CIN |
| +020+ | 4.3 | Bill Swift | 108 | SEA |
| +025+ | 4.13 | Doug Drabek | 179.3 | PIT |
| +035+ | 3.58 | Ramon Martinez | 181 | LAN |
| +039+ | 3.4 | Greg Hibbard | 164.7 | CHA |
| +050+ | 3.14 | Dave Stieb | 154.3 | TOR |
| +059+ | 2.85 | Bob Tewksbury | 104 | SLN |
| +061+ | 2.78 | Kevin Appier | 132 | KCA |
| +063+ | 2.69 | Tom Candiotti | 169 | CLE |
| +066+ | 2.67 | Bob Welch | 186.3 | OAK |
| +071+ | 2.56 | Mike Morgan | 176.7 | LAN |
| +072+ | 2.53 | Greg Harris | 148.3 | BOS |
| +075+ | 2.46 | Dave Wells | 139.7 | TOR |
| +077+ | 2.44 | Oil Can Boyd | 145.3 | WAS |
| +076+ | 2.44 | Mark Gardner | 143 | WAS |
| +086+ | 2.2 | Zane Smith | 161.3 | TOT |
| +090+ | 2.11 | Kirk McCaskill | 133.7 | ANA |
| +096+ | 2.01 | Matt Young | 173.3 | SEA |
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