| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 15.86 | 199008300_BOS_CLE |
| Dave Stewart | OAK | 5.2 | 199008300_KCA_OAK |
| Frank Viola | NYN | 4.63 | 199008310_SFN_NYN |
| Norm Charlton | CIN | 3.23 | 199008310_CIN_CHN |
| Ramon Martinez | LAN | 2.09 | 199008300_LAN_PHI |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Frank Tanana | DET | -10.34 | 199008300_DET_SEA |
| Mike Bielecki | CHN | -3.49 | 199008300_CIN_CHN |
| David West | MIN | -2.82 | 199008300_CHA_MIN |
| Andy Hawkins | NYA | -2.67 | 199009010_NYA_BOS |
| Derek Lilliquist | SDN | -2.13 | 199009012_SDN_PHI |
Based on accumulated WAA for this season up to 1990-09-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.99 | Roger Clemens | 217 | BOS |
| +005+ | 6.57 | Ed Whitson | 191.7 | SDN |
| +007+ | 5.8 | Danny Darwin | 124.3 | HOU |
| +008+ | 5.77 | Chuck Finley | 188.7 | ANA |
| +013+ | 5.32 | Frank Viola | 198.3 | NYN |
| +014+ | 5.3 | Dave Stewart | 218 | OAK |
| +016+ | 4.72 | Doug Drabek | 185.3 | PIT |
| +018+ | 4.55 | Norm Charlton | 119 | CIN |
| +024+ | 4.27 | Dennis Martinez | 203.7 | WAS |
| +033+ | 3.81 | Ramon Martinez | 188 | LAN |
| +036+ | 3.62 | Kevin Appier | 141 | KCA |
| +040+ | 3.45 | Bob Tewksbury | 113 | SLN |
| +045+ | 3.16 | Greg Hibbard | 171 | CHA |
| +046+ | 3.11 | Bob Welch | 193.7 | OAK |
| +055+ | 2.96 | Oil Can Boyd | 160.7 | WAS |
| +057+ | 2.93 | Dave Stieb | 161.3 | TOR |
| +058+ | 2.92 | Zane Smith | 169.3 | TOT |
| +060+ | 2.91 | Kirk McCaskill | 142.7 | ANA |
| +066+ | 2.78 | Tom Browning | 190.7 | CIN |
| +068+ | 2.76 | Mark Gardner | 149 | WAS |
| +070+ | 2.61 | Greg Harris | 156.3 | BOS |
| +084+ | 2.28 | Mike Morgan | 182.7 | LAN |
| +087+ | 2.25 | Greg Maddux | 189.7 | CHN |
| +088+ | 2.22 | Randy Johnson | 185 | SEA |
| +099+ | 2.12 | Mike Boddicker | 188 | BOS |
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