| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dave Stewart | OAK | 8.28 | 199008200_OAK_CHA |
| Chuck Finley | ANA | 7.77 | 199008220_ANA_DET |
| Ed Whitson | SDN | 5.26 | 199008210_NYN_SDN |
| Danny Darwin | HOU | 4.3 | 199008210_HOU_PIT |
| Frank Viola | NYN | 4.16 | 199008220_NYN_SDN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jeff Robinson | DET | -5.36 | 199008200_ANA_DET |
| Andy Hawkins | NYA | -4.36 | 199008220_TOR_NYA |
| Mike Bielecki | CHN | -3.66 | 199008200_CHN_CIN |
| David West | MIN | -1.98 | 199008200_MIN_KCA |
| Kevin Gross | WAS | -1.09 | 199008200_WAS_SFN |
Based on accumulated WAA for this season up to 1990-08-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.87 | Roger Clemens | 199 | BOS |
| +006+ | 6.26 | Dave Stewart | 207 | OAK |
| +007+ | 6.01 | Ed Whitson | 183 | SDN |
| +008+ | 5.88 | Chuck Finley | 182.3 | ANA |
| +009+ | 5.49 | Danny Darwin | 115.3 | HOU |
| +011+ | 5.05 | Frank Viola | 182.3 | NYN |
| +018+ | 4.35 | Dennis Martinez | 189.7 | WAS |
| +021+ | 4.2 | Doug Drabek | 172.3 | PIT |
| +022+ | 4.17 | Bill Swift | 106.3 | SEA |
| +032+ | 3.75 | Norm Charlton | 105 | CIN |
| +035+ | 3.55 | Bob Welch | 181.7 | OAK |
| +036+ | 3.51 | Ramon Martinez | 174 | LAN |
| +046+ | 3.13 | Greg Hibbard | 156.3 | CHA |
| +058+ | 2.89 | Bob Tewksbury | 104 | SLN |
| +064+ | 2.79 | Tom Candiotti | 169 | CLE |
| +070+ | 2.5 | Randy Johnson | 171.3 | SEA |
| +071+ | 2.49 | Mark Gardner | 143 | WAS |
| +073+ | 2.49 | Mike Morgan | 169.7 | LAN |
| +072+ | 2.49 | Oil Can Boyd | 145.3 | WAS |
| +074+ | 2.47 | Kirk McCaskill | 128 | ANA |
| +080+ | 2.29 | Kevin Appier | 126 | KCA |
| +091+ | 2.11 | Zane Smith | 155 | TOT |
| +094+ | 2 | Dave Wells | 131.7 | TOR |
| +104+ | 1.9 | Matt Young | 167 | SEA |
| +105+ | 1.9 | Tom Bolton | 67 | BOS |
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