| 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 |
|---|---|---|---|
| Andy Hawkins | NYA | -5.32 | 199008060_CLE_NYA |
| Storm Davis | KCA | -1.43 | 199008060_CHA_KCA |
| 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 1990-08-06.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.63 | Roger Clemens | 176.3 | BOS |
| +005+ | 6.04 | Frank Viola | 158 | NYN |
| +007+ | 5.5 | Chuck Finley | 161 | ANA |
| +008+ | 5.47 | Dave Stewart | 181.3 | OAK |
| +010+ | 4.62 | John Tudor | 130.3 | SLN |
| +011+ | 4.58 | Danny Darwin | 93.3 | HOU |
| +016+ | 4.19 | Ramon Martinez | 153.3 | LAN |
| +017+ | 4.18 | Bill Swift | 87.3 | SEA |
| +018+ | 4.07 | Ed Whitson | 156.7 | SDN |
| +020+ | 4 | Doug Drabek | 150 | PIT |
| +034+ | 3.25 | Greg Hibbard | 136 | CHA |
| +038+ | 3.12 | Dennis Martinez | 163.7 | WAS |
| +041+ | 3 | Mark Gardner | 127.7 | WAS |
| +043+ | 2.85 | Tom Candiotti | 139.3 | CLE |
| +044+ | 2.84 | Tom Browning | 161.7 | CIN |
| +050+ | 2.69 | Jack Armstrong | 143.7 | CIN |
| +053+ | 2.6 | Kevin Brown | 160.3 | TEX |
| +056+ | 2.55 | Oil Can Boyd | 129.7 | WAS |
| +062+ | 2.44 | Dave Stieb | 133.7 | TOR |
| +063+ | 2.43 | Bob Welch | 152.3 | OAK |
| +068+ | 2.37 | Norm Charlton | 82 | CIN |
| +069+ | 2.36 | Bud Black | 156.7 | CLE |
| +084+ | 2.04 | Zane Smith | 133.3 | WAS |
| +088+ | 2.02 | Greg Harris | 120 | BOS |
| +092+ | 1.98 | Kirk McCaskill | 108 | ANA |
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