| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 13.24 | 199008040_DET_BOS |
| Chuck Finley | ANA | 6.84 | 199008050_OAK_ANA |
| Dave Stewart | OAK | 5.76 | 199008050_OAK_ANA |
| Danny Darwin | HOU | 4.54 | 199008050_ATL_HOU |
| John Tudor | SLN | 4.31 | 199008050_NYN_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jeff Robinson | DET | -2.44 | 199008030_DET_BOS |
| Bruce Ruffin | PHI | -1.34 | 199008030_PIT_PHI |
| Allan Anderson | MIN | -1.22 | 199008050_MIN_SEA |
| Todd Stottlemyre | TOR | -1.19 | 199008040_TOR_TEX |
| Ken Hill | SLN | -0.62 | 199008040_NYN_SLN |
Based on accumulated WAA for this season up to 1990-08-05.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.65 | Roger Clemens | 176.3 | BOS |
| +005+ | 6.04 | Frank Viola | 158 | NYN |
| +007+ | 5.52 | Chuck Finley | 161 | ANA |
| +008+ | 5.49 | Dave Stewart | 181.3 | OAK |
| +010+ | 4.63 | John Tudor | 130.3 | SLN |
| +011+ | 4.59 | Danny Darwin | 93.3 | HOU |
| +016+ | 4.21 | Ramon Martinez | 153.3 | LAN |
| +017+ | 4.19 | Bill Swift | 87.3 | SEA |
| +018+ | 4.08 | Ed Whitson | 156.7 | SDN |
| +019+ | 4.03 | Doug Drabek | 150 | PIT |
| +033+ | 3.26 | Greg Hibbard | 136 | CHA |
| +037+ | 3.14 | Dennis Martinez | 163.7 | WAS |
| +041+ | 3.01 | Mark Gardner | 127.7 | WAS |
| +043+ | 2.86 | Tom Browning | 161.7 | CIN |
| +044+ | 2.85 | Tom Candiotti | 139.3 | CLE |
| +048+ | 2.73 | Dave Stieb | 127.7 | TOR |
| +050+ | 2.7 | Jack Armstrong | 143.7 | CIN |
| +054+ | 2.62 | Kevin Brown | 160.3 | TEX |
| +056+ | 2.56 | Oil Can Boyd | 129.7 | WAS |
| +062+ | 2.44 | Bob Welch | 152.3 | OAK |
| +067+ | 2.38 | Norm Charlton | 82 | CIN |
| +069+ | 2.36 | Bud Black | 156.7 | CLE |
| +081+ | 2.09 | Kevin Appier | 107 | KCA |
| +083+ | 2.06 | Zane Smith | 133.3 | WAS |
| +085+ | 2.04 | Greg Harris | 120 | BOS |
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