| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 4.32 | 199008210_OAK_CHA |
| Kansas City Royals | KCA | 1.27 | 199008220_MIN_KCA |
| Baltimore Orioles | BAL | 1.03 | 199008210_BAL_BOS |
| Pittsburgh Pirates | PIT | 0.95 | 199008210_HOU_PIT |
| Chicago White Sox | CHA | 0.7 | 199008230_ANA_CHA |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -8.95 | 199008210_ATL_SLN |
| Chicago Cubs | CHN | -2.58 | 199008210_CHN_CIN |
| Boston Red Sox | BOS | -2.28 | 199008210_BAL_BOS |
| Milwaukee Brewers | MIL | -2.16 | 199008230_MIL_NYA |
| Minnesota Twins | MIN | -1.33 | 199008210_MIN_KCA |
Based on accumulated WAA for this season up to 1990-08-23.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +019+ | 4.29 | Jeff Brantley | 80 | SFN |
| +024+ | 4.11 | Doug Jones | 62.7 | CLE |
| +025+ | 4.04 | Steve Farr | 92.3 | KCA |
| +027+ | 3.98 | Mark Williamson | 85.3 | BAL |
| +028+ | 3.96 | Dennis Eckersley | 53.3 | OAK |
| +033+ | 3.62 | Gregg Olson | 60.7 | BAL |
| +039+ | 3.25 | Randy Myers | 66.7 | CIN |
| +044+ | 3.21 | Gene Nelson | 59 | OAK |
| +047+ | 3.19 | Rob Dibble | 73 | CIN |
| +049+ | 3.11 | Jeff Montgomery | 75.3 | KCA |
| +050+ | 3.08 | Edwin Nunez | 61.3 | DET |
| +052+ | 3.02 | Brad Arnsberg | 47.3 | TEX |
| +054+ | 3 | Larry Andersen | 69.7 | HOU |
| +059+ | 2.93 | Bobby Thigpen | 67.7 | CHA |
| +061+ | 2.89 | Lee Smith | 73.7 | TOT |
| +065+ | 2.82 | Greg Harris | 93 | SDN |
| +068+ | 2.71 | Tom Henke | 60.3 | TOR |
| +069+ | 2.64 | John Franco | 56.7 | NYN |
| +078+ | 2.33 | Barry Jones | 63.3 | CHA |
| +083+ | 2.24 | Tim Crews | 77.3 | LAN |
| +087+ | 2.17 | Bill Landrum | 61.3 | PIT |
| +086+ | 2.17 | Dan Schatzeder | 58.3 | HOU |
| +091+ | 2.14 | Mike Schooler | 56 | SEA |
| +094+ | 2.03 | Darrel Akerfelds | 77.7 | PHI |
| +095+ | 2 | Craig Lefferts | 69.7 | SDN |
_