| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dave Stewart | OAK | 7.35 | 199010010_ANA_OAK |
| Zane Smith | PIT | 4.45 | 199010010_NYN_PIT |
| Jose Rijo | CIN | 3.26 | 199009300_SDN_CIN |
| Ramon Martinez | LAN | 2.71 | 199010010_SDN_LAN |
| Kevin Appier | KCA | 2.53 | 199009300_KCA_ANA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Frank Tanana | DET | -5.81 | 199010010_DET_NYA |
| Derek Lilliquist | SDN | -3.1 | 199009300_SDN_CIN |
| Mike Bielecki | CHN | -2.92 | 199010020_CHN_PHI |
| Melido Perez | CHA | -2.02 | 199010020_CHA_BOS |
| Kevin Gross | WAS | -1.55 | 199010020_SLN_WAS |
Based on accumulated WAA for this season up to 1990-10-02.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 10.49 | Roger Clemens | 228.3 | BOS |
| +005+ | 7.86 | Dave Stewart | 267 | OAK |
| +006+ | 7.85 | Chuck Finley | 236 | ANA |
| +010+ | 6.98 | Frank Viola | 242.7 | NYN |
| +014+ | 6.46 | Ed Whitson | 228.7 | SDN |
| +015+ | 6.29 | Zane Smith | 215.3 | TOT |
| +016+ | 6.17 | Danny Darwin | 162.7 | HOU |
| +020+ | 5.86 | Doug Drabek | 231.3 | PIT |
| +021+ | 5.65 | Steve Farr | 127 | KCA |
| +028+ | 5.18 | Jose Rijo | 197 | CIN |
| +029+ | 5.15 | Ramon Martinez | 234.3 | LAN |
| +032+ | 4.89 | Kevin Appier | 185.7 | KCA |
| +034+ | 4.85 | Bob Welch | 238 | OAK |
| +043+ | 4.15 | Dave Stieb | 201.7 | TOR |
| +047+ | 3.89 | Norm Charlton | 154.3 | CIN |
| +049+ | 3.79 | Oil Can Boyd | 190.7 | WAS |
| +052+ | 3.59 | Ben McDonald | 110 | BAL |
| +053+ | 3.57 | Greg Hibbard | 211 | CHA |
| +055+ | 3.49 | Bruce Hurst | 223.7 | SDN |
| +059+ | 3.37 | Erik Hanson | 236 | SEA |
| +067+ | 3.13 | David Cone | 211.7 | NYN |
| +070+ | 3.02 | Dave Wells | 189 | TOR |
| +076+ | 2.85 | Charlie Leibrandt | 156.3 | ATL |
| +081+ | 2.66 | Scott Erickson | 113 | MIN |
| +087+ | 2.52 | Bobby Witt | 222 | TEX |
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