| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 13.04 | 199008140_BOS_OAK |
| Frank Viola | NYN | 6.82 | 199008120_CHN_NYN |
| Ramon Martinez | LAN | 3.36 | 199008141_LAN_NYN |
| Dennis Martinez | WAS | 3.16 | 199008140_WAS_SDN |
| Doug Drabek | PIT | 3.03 | 199008141_ATL_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Walt Terrell | DET | -5.1 | 199008130_DET_CLE |
| Derek Lilliquist | SDN | -4.25 | 199008120_SDN_HOU |
| Allan Anderson | MIN | -1.49 | 199008120_MIN_TOR |
| Jim Abbott | ANA | -1.23 | 199008140_NYA_ANA |
| Todd Stottlemyre | TOR | -1.2 | 199008140_TOR_CHA |
Based on accumulated WAA for this season up to 1990-08-14.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.59 | Roger Clemens | 192 | BOS |
| +005+ | 6.29 | Dave Stewart | 190 | OAK |
| +007+ | 5.91 | Chuck Finley | 168 | ANA |
| +009+ | 4.85 | Ed Whitson | 165 | SDN |
| +010+ | 4.76 | John Tudor | 132.3 | SLN |
| +011+ | 4.7 | Frank Viola | 168.3 | NYN |
| +016+ | 4.61 | Danny Darwin | 100.3 | HOU |
| +013+ | 4.61 | Bill Swift | 94.7 | SEA |
| +021+ | 4.05 | Dennis Martinez | 181.7 | WAS |
| +023+ | 3.92 | Doug Drabek | 165.7 | PIT |
| +031+ | 3.55 | Tom Browning | 176 | CIN |
| +034+ | 3.29 | Ramon Martinez | 165.7 | LAN |
| +038+ | 3.2 | Norm Charlton | 91 | CIN |
| +039+ | 3.19 | Mark Gardner | 132.7 | WAS |
| +041+ | 3.13 | Bob Welch | 166.7 | OAK |
| +053+ | 2.83 | Oil Can Boyd | 135.7 | WAS |
| +058+ | 2.58 | Kirk McCaskill | 121.7 | ANA |
| +060+ | 2.55 | Ben McDonald | 46.3 | BAL |
| +063+ | 2.53 | Dave Stieb | 141.3 | TOR |
| +062+ | 2.53 | Tom Candiotti | 154 | CLE |
| +080+ | 2.12 | Tom Bolton | 62 | BOS |
| +086+ | 2.06 | Jack Armstrong | 150.3 | CIN |
| +090+ | 2.02 | Kevin Appier | 120 | KCA |
| +095+ | 1.97 | Bob Tewksbury | 88 | SLN |
| +098+ | 1.94 | John Burkett | 141.3 | SFN |
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