| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 4.32 | 199008210_OAK_CHA |
| Kansas City Royals | KCA | 1.27 | 199008220_MIN_KCA |
| Baltimore Orioles | BAL | 1.07 | 199008200_BAL_BOS |
| Pittsburgh Pirates | PIT | 1.01 | 199008200_HOU_PIT |
| Chicago White Sox | CHA | 0.73 | 199008200_OAK_CHA |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -9.69 | 199008200_ATL_SLN |
| Chicago Cubs | CHN | -2.79 | 199008200_CHN_CIN |
| Boston Red Sox | BOS | -2.28 | 199008210_BAL_BOS |
| Milwaukee Brewers | MIL | -1.95 | 199008200_CLE_MIL |
| Minnesota Twins | MIN | -1.33 | 199008210_MIN_KCA |
Based on accumulated WAA for this season up to 1990-08-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +020+ | 4.26 | Jeff Brantley | 79.7 | SFN |
| +023+ | 4.11 | Doug Jones | 62.7 | CLE |
| +025+ | 3.98 | Mark Williamson | 85.3 | BAL |
| +026+ | 3.96 | Dennis Eckersley | 53.3 | OAK |
| +031+ | 3.86 | Steve Farr | 90.3 | KCA |
| +033+ | 3.62 | Gregg Olson | 60.7 | BAL |
| +040+ | 3.25 | Randy Myers | 66.7 | CIN |
| +043+ | 3.21 | Gene Nelson | 59 | OAK |
| +045+ | 3.19 | Rob Dibble | 73 | CIN |
| +048+ | 3.08 | Edwin Nunez | 61.3 | DET |
| +049+ | 3.02 | Brad Arnsberg | 47.3 | TEX |
| +050+ | 3.02 | Jeff Montgomery | 74.3 | KCA |
| +059+ | 2.89 | Lee Smith | 73.7 | TOT |
| +060+ | 2.84 | Bobby Thigpen | 66.7 | CHA |
| +062+ | 2.82 | Larry Andersen | 67.7 | HOU |
| +061+ | 2.82 | Greg Harris | 93 | SDN |
| +066+ | 2.74 | Tom Henke | 58.3 | TOR |
| +067+ | 2.64 | John Franco | 56.7 | NYN |
| +076+ | 2.33 | Barry Jones | 63.3 | CHA |
| +083+ | 2.24 | Tim Crews | 77.3 | LAN |
| +088+ | 2.17 | Bill Landrum | 61.3 | PIT |
| +087+ | 2.17 | Dan Schatzeder | 58.3 | HOU |
| +090+ | 2.13 | Mike Schooler | 56 | SEA |
| +093+ | 2 | Craig Lefferts | 69.7 | SDN |
| +095+ | 1.99 | Darrel Akerfelds | 77.3 | PHI |
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