| Starter | Tm | Tier | Game |
|---|---|---|---|
| Chuck Finley | ANA | 7.77 | 199008220_ANA_DET |
| Frank Viola | NYN | 4.16 | 199008220_NYN_SDN |
| Dennis Martinez | WAS | 3.91 | 199008240_SDN_WAS |
| Doug Drabek | PIT | 3.72 | 199008240_CIN_PIT |
| Bill Swift | SEA | 3.15 | 199008220_SEA_TEX |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Andy Hawkins | NYA | -4.36 | 199008220_TOR_NYA |
| Walt Terrell | DET | -4.32 | 199008240_OAK_DET |
| Jaime Navarro | MIL | -2.35 | 199008230_MIL_NYA |
| Jim Abbott | ANA | -1.75 | 199008240_ANA_CHA |
| Jimmy Key | TOR | -0.72 | 199008240_BOS_TOR |
Based on accumulated WAA for this season up to 1990-08-24.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.83 | Roger Clemens | 199 | BOS |
| +006+ | 6.21 | Dave Stewart | 207 | OAK |
| +007+ | 5.97 | Ed Whitson | 183 | SDN |
| +008+ | 5.86 | Chuck Finley | 182.3 | ANA |
| +010+ | 5.44 | Danny Darwin | 115.3 | HOU |
| +012+ | 5.02 | Frank Viola | 182.3 | NYN |
| +015+ | 4.6 | Dennis Martinez | 197.7 | WAS |
| +023+ | 4.16 | Bill Swift | 106.3 | SEA |
| +022+ | 4.16 | Doug Drabek | 179.3 | PIT |
| +032+ | 3.73 | Norm Charlton | 105 | CIN |
| +033+ | 3.69 | Ramon Martinez | 181 | LAN |
| +035+ | 3.51 | Bob Welch | 181.7 | OAK |
| +047+ | 3.17 | Dave Stieb | 154.3 | TOR |
| +051+ | 3.1 | Greg Hibbard | 156.3 | CHA |
| +062+ | 2.85 | Bob Tewksbury | 104 | SLN |
| +064+ | 2.81 | Kevin Appier | 132 | KCA |
| +067+ | 2.73 | Tom Candiotti | 169 | CLE |
| +071+ | 2.48 | Randy Johnson | 171.3 | SEA |
| +073+ | 2.46 | Mark Gardner | 143 | WAS |
| +074+ | 2.46 | Oil Can Boyd | 145.3 | WAS |
| +075+ | 2.44 | Mike Morgan | 169.7 | LAN |
| +082+ | 2.22 | Zane Smith | 161.3 | TOT |
| +090+ | 2.13 | Kirk McCaskill | 133.7 | ANA |
| +098+ | 2.03 | Matt Young | 173.3 | SEA |
| +105+ | 1.88 | Greg Maddux | 180.7 | CHN |
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