| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 13.71 | 199009290_TOR_BOS |
| Chuck Finley | ANA | 7.11 | 199009280_KCA_ANA |
| Frank Viola | NYN | 5.52 | 199009290_CHN_NYN |
| Ed Whitson | SDN | 5.08 | 199009290_SDN_CIN |
| Danny Darwin | HOU | 4.26 | 199009280_ATL_HOU |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike Bielecki | CHN | -2.93 | 199009270_CHN_PIT |
| Jack Morris | DET | -2.29 | 199009280_MIN_DET |
| Steve Avery | ATL | -1.5 | 199009270_ATL_CIN |
| Melido Perez | CHA | -1.32 | 199009270_MIL_CHA |
| Sergio Valdez | CLE | -1.32 | 199009280_BAL_CLE |
Based on accumulated WAA for this season up to 1990-09-29.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 10.57 | Roger Clemens | 228.3 | BOS |
| +005+ | 7.89 | Chuck Finley | 236 | ANA |
| +006+ | 7.53 | Dave Stewart | 258 | OAK |
| +008+ | 7.02 | Frank Viola | 242.7 | NYN |
| +014+ | 6.49 | Ed Whitson | 228.7 | SDN |
| +015+ | 6.19 | Danny Darwin | 162.7 | HOU |
| +018+ | 5.89 | Zane Smith | 210.3 | TOT |
| +020+ | 5.68 | Steve Farr | 127 | KCA |
| +026+ | 5.1 | Doug Drabek | 222.3 | PIT |
| +028+ | 4.99 | Jose Rijo | 192 | CIN |
| +033+ | 4.6 | Ramon Martinez | 225.3 | LAN |
| +036+ | 4.49 | Bob Welch | 231 | OAK |
| +038+ | 4.43 | Dennis Martinez | 226 | WAS |
| +040+ | 4.41 | Kevin Appier | 177.7 | KCA |
| +041+ | 4.18 | Dave Stieb | 201.7 | TOR |
| +047+ | 3.84 | Norm Charlton | 153.3 | CIN |
| +048+ | 3.83 | Oil Can Boyd | 190.7 | WAS |
| +049+ | 3.72 | Greg Hibbard | 207.3 | CHA |
| +051+ | 3.61 | Ben McDonald | 110 | BAL |
| +055+ | 3.53 | Bruce Hurst | 223.7 | SDN |
| +060+ | 3.35 | Dave Wells | 183 | TOR |
| +072+ | 2.88 | Charlie Leibrandt | 156.3 | ATL |
| +079+ | 2.69 | Scott Erickson | 113 | MIN |
| +082+ | 2.61 | Randy Tomlin | 75.7 | PIT |
| +083+ | 2.59 | Erik Hanson | 227 | SEA |
_