| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 3.96 | 199008190_OAK_BAL |
| Baltimore Orioles | BAL | 1.2 | 199008190_OAK_BAL |
| Kansas City Royals | KCA | 1.17 | 199008190_KCA_MIL |
| Pittsburgh Pirates | PIT | 0.84 | 199008190_PIT_CIN |
| Chicago White Sox | CHA | 0.68 | 199008190_CHA_TEX |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -9.25 | 199008190_ATL_CHN |
| Chicago Cubs | CHN | -2.91 | 199008190_ATL_CHN |
| Boston Red Sox | BOS | -2.63 | 199008180_ANA_BOS |
| Detroit Tigers | DET | -1 | 199008180_CLE_DET |
| San Diego Padres | SDN | -0.87 | 199008170_PHI_SDN |
Based on accumulated WAA for this season up to 1990-08-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +022+ | 4.22 | Jeff Brantley | 79 | SFN |
| +024+ | 3.98 | Mark Williamson | 85.3 | BAL |
| +026+ | 3.93 | Doug Jones | 60.7 | CLE |
| +028+ | 3.88 | Steve Farr | 90.3 | KCA |
| +029+ | 3.88 | Dennis Eckersley | 52.3 | OAK |
| +032+ | 3.57 | Gregg Olson | 60 | BAL |
| +040+ | 3.2 | Greg Harris | 92.3 | SDN |
| +044+ | 3.1 | Gene Nelson | 57.7 | OAK |
| +045+ | 3.08 | Randy Myers | 64.7 | CIN |
| +046+ | 3.08 | Rob Dibble | 71.7 | CIN |
| +048+ | 3.07 | Edwin Nunez | 58.7 | DET |
| +054+ | 2.91 | Lee Smith | 73.7 | TOT |
| +057+ | 2.82 | Brad Arnsberg | 45 | TEX |
| +060+ | 2.77 | Jeff Montgomery | 71.3 | KCA |
| +059+ | 2.77 | Bobby Thigpen | 65.7 | CHA |
| +061+ | 2.76 | Larry Andersen | 67 | HOU |
| +062+ | 2.75 | Tom Henke | 58.3 | TOR |
| +067+ | 2.55 | John Franco | 55.7 | NYN |
| +081+ | 2.26 | Tim Crews | 77.3 | LAN |
| +082+ | 2.26 | Barry Jones | 62.3 | CHA |
| +085+ | 2.21 | Bill Landrum | 59.3 | PIT |
| +090+ | 2.06 | Dan Schatzeder | 57 | HOU |
| +091+ | 2.05 | Craig Lefferts | 67.7 | SDN |
| +096+ | 2.01 | Darrel Akerfelds | 77.3 | PHI |
| +099+ | 1.99 | Mike Schooler | 54.3 | SEA |
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