| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 2.69 | 199008310_TEX_OAK |
| Kansas City Royals | KCA | 1.25 | 199008290_KCA_OAK |
| Los Angeles Dodgers | LAN | 0.75 | 199008310_LAN_WAS |
| Pittsburgh Pirates | PIT | 0.72 | 199008310_PIT_HOU |
| Seattle Mariners | SEA | 0.58 | 199008300_DET_SEA |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -12.66 | 199008290_PIT_ATL |
| Boston Red Sox | BOS | -4.17 | 199008290_BOS_CLE |
| Philadelphia Phillies | PHI | -1.65 | 199008300_LAN_PHI |
| Chicago Cubs | CHN | -1.16 | 199008310_CIN_CHN |
| New York Mets | NYN | -0.4 | 199008310_SFN_NYN |
Based on accumulated WAA for this season up to 1990-08-31.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +017+ | 4.64 | Jeff Brantley | 84 | SFN |
| +020+ | 4.45 | Bill Swift | 109.7 | SEA |
| +024+ | 4.25 | Steve Farr | 97.3 | KCA |
| +026+ | 4.19 | Dennis Eckersley | 58.3 | OAK |
| +036+ | 3.62 | Rob Dibble | 80.3 | CIN |
| +038+ | 3.54 | Edwin Nunez | 66.7 | DET |
| +042+ | 3.32 | Larry Andersen | 73.7 | HOU |
| +041+ | 3.32 | Gene Nelson | 62.7 | OAK |
| +050+ | 3.08 | Randy Myers | 72 | CIN |
| +052+ | 2.97 | Lee Smith | 75 | TOT |
| +059+ | 2.91 | Jeff Montgomery | 78 | KCA |
| +061+ | 2.89 | Bobby Thigpen | 72 | CHA |
| +062+ | 2.86 | Tom Henke | 62.3 | TOR |
| +064+ | 2.79 | Greg Harris | 95 | SDN |
| +065+ | 2.78 | Tim Crews | 84 | LAN |
| +073+ | 2.54 | Gregg Olson | 63 | BAL |
| +079+ | 2.32 | Barry Jones | 65.7 | CHA |
| +080+ | 2.3 | Brad Arnsberg | 51 | TEX |
| +084+ | 2.25 | Jay Howell | 55 | LAN |
| +088+ | 2.21 | Doug Jones | 65.3 | CLE |
| +096+ | 2.12 | Craig Lefferts | 71 | SDN |
| +099+ | 2.08 | Dan Schatzeder | 60 | HOU |
| +100+ | 2.05 | Curt Schilling | 34.3 | BAL |
| +101+ | 2.05 | Bryan Harvey | 53.3 | ANA |
| +109+ | 1.97 | Keith Comstock | 49.7 | SEA |
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