| Starter | Tm | Tier | Game |
|---|---|---|---|
| Frank Viola | NYN | 8.92 | 199008070_PHI_NYN |
| 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 |
| Mike Bielecki | CHN | -3.06 | 199008070_SLN_CHN |
| Eric Show | SDN | -2.36 | 199008072_SDN_ATL |
| Jack Morris | DET | -2.21 | 199008070_DET_TOR |
| Storm Davis | KCA | -1.43 | 199008060_CHA_KCA |
Based on accumulated WAA for this season up to 1990-08-07.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.63 | Roger Clemens | 176.3 | BOS |
| +006+ | 5.5 | Chuck Finley | 161 | ANA |
| +007+ | 5.47 | Frank Viola | 163.3 | NYN |
| +008+ | 5.47 | Dave Stewart | 181.3 | OAK |
| +011+ | 4.63 | John Tudor | 130.3 | SLN |
| +012+ | 4.58 | Danny Darwin | 93.3 | HOU |
| +016+ | 4.2 | Ramon Martinez | 153.3 | LAN |
| +017+ | 4.18 | Bill Swift | 87.3 | SEA |
| +019+ | 4.07 | Ed Whitson | 156.7 | SDN |
| +029+ | 3.57 | Tom Browning | 169.7 | CIN |
| +035+ | 3.25 | Greg Hibbard | 136 | CHA |
| +040+ | 3.08 | Dennis Martinez | 163.7 | WAS |
| +042+ | 2.97 | Mark Gardner | 127.7 | WAS |
| +050+ | 2.69 | Jack Armstrong | 143.7 | CIN |
| +052+ | 2.65 | Tom Candiotti | 146.3 | CLE |
| +053+ | 2.64 | Bob Welch | 159.3 | OAK |
| +057+ | 2.52 | Oil Can Boyd | 129.7 | WAS |
| +061+ | 2.43 | Dave Stieb | 133.7 | TOR |
| +065+ | 2.37 | Norm Charlton | 82 | CIN |
| +066+ | 2.35 | Bud Black | 156.7 | CLE |
| +074+ | 2.26 | Kevin Brown | 168 | TEX |
| +080+ | 2.13 | Zane Smith | 139.3 | WAS |
| +087+ | 2.02 | Greg Harris | 120 | BOS |
| +090+ | 1.98 | Kirk McCaskill | 108 | ANA |
| +091+ | 1.96 | Dennis Cook | 117.7 | PHI |
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