| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 13.71 | 199009290_TOR_BOS |
| Dave Stewart | OAK | 7.35 | 199010010_ANA_OAK |
| Frank Viola | NYN | 5.52 | 199009290_CHN_NYN |
| Ed Whitson | SDN | 5.08 | 199009290_SDN_CIN |
| Zane Smith | PIT | 4.45 | 199010010_NYN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Frank Tanana | DET | -5.81 | 199010010_DET_NYA |
| Derek Lilliquist | SDN | -3.1 | 199009300_SDN_CIN |
| Jaime Navarro | MIL | -1.21 | 199009290_NYA_MIL |
| Steve Wilson | CHN | -1.02 | 199009300_CHN_NYN |
| Bob Milacki | BAL | -0.92 | 199009301_BAL_CLE |
Based on accumulated WAA for this season up to 1990-10-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 10.53 | Roger Clemens | 228.3 | BOS |
| +005+ | 7.87 | Dave Stewart | 267 | OAK |
| +006+ | 7.85 | Chuck Finley | 236 | ANA |
| +010+ | 6.98 | Frank Viola | 242.7 | NYN |
| +014+ | 6.47 | Ed Whitson | 228.7 | SDN |
| +015+ | 6.3 | Zane Smith | 215.3 | TOT |
| +016+ | 6.17 | Danny Darwin | 162.7 | HOU |
| +019+ | 5.87 | Doug Drabek | 231.3 | PIT |
| +021+ | 5.65 | Steve Farr | 127 | KCA |
| +026+ | 5.19 | Jose Rijo | 197 | CIN |
| +028+ | 5.17 | Ramon Martinez | 234.3 | LAN |
| +031+ | 4.89 | Kevin Appier | 185.7 | KCA |
| +041+ | 4.16 | Dave Stieb | 201.7 | TOR |
| +047+ | 3.81 | Norm Charlton | 153.3 | CIN |
| +048+ | 3.79 | Oil Can Boyd | 190.7 | WAS |
| +053+ | 3.6 | Ben McDonald | 110 | BAL |
| +052+ | 3.6 | Greg Hibbard | 211 | CHA |
| +054+ | 3.5 | Bruce Hurst | 223.7 | SDN |
| +068+ | 3.13 | David Cone | 211.7 | NYN |
| +071+ | 3.03 | Dave Wells | 189 | TOR |
| +075+ | 2.86 | Charlie Leibrandt | 156.3 | ATL |
| +083+ | 2.67 | Scott Erickson | 113 | MIN |
| +084+ | 2.6 | Randy Tomlin | 75.7 | PIT |
| +085+ | 2.58 | Erik Hanson | 227 | SEA |
| +086+ | 2.52 | Mike Boddicker | 221 | BOS |
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