| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 4.22 | 199008010_SEA_OAK |
| Cincinnati Reds | CIN | 2.05 | 199008010_CIN_SDN |
| Pittsburgh Pirates | PIT | 1.5 | 199008020_PIT_CHN |
| Cleveland Indians | CLE | 1.09 | 199008010_KCA_CLE |
| Houston Astros | HOU | 0.94 | 199008020_ATL_HOU |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Detroit Tigers | DET | -5.13 | 199008010_DET_NYA |
| Chicago Cubs | CHN | -4.66 | 199008030_WAS_CHN |
| Atlanta Braves | ATL | -3.11 | 199008020_ATL_HOU |
| Boston Red Sox | BOS | -2.39 | 199008030_DET_BOS |
| Minnesota Twins | MIN | -0.73 | 199008030_MIN_SEA |
Based on accumulated WAA for this season up to 1990-08-03.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +017+ | 4.01 | Jeff Brantley | 74.3 | SFN |
| +018+ | 3.94 | Mark Williamson | 73.3 | BAL |
| +024+ | 3.65 | Gregg Olson | 54 | BAL |
| +026+ | 3.57 | Doug Jones | 54.3 | CLE |
| +030+ | 3.42 | Dennis Eckersley | 47 | OAK |
| +037+ | 3.03 | Steve Farr | 74 | KCA |
| +042+ | 2.84 | Tom Candiotti | 139.3 | CLE |
| +049+ | 2.71 | Rob Dibble | 64.7 | CIN |
| +048+ | 2.71 | Lee Smith | 66 | TOT |
| +052+ | 2.64 | Gene Nelson | 50 | OAK |
| +053+ | 2.61 | Randy Myers | 56.7 | CIN |
| +056+ | 2.57 | Bobby Thigpen | 56.3 | CHA |
| +066+ | 2.37 | John Franco | 49 | NYN |
| +065+ | 2.37 | Brad Arnsberg | 37.7 | TEX |
| +068+ | 2.32 | Greg Harris | 81.3 | SDN |
| +069+ | 2.31 | Terry Leach | 62 | MIN |
| +072+ | 2.21 | Jeff Montgomery | 65 | KCA |
| +071+ | 2.21 | Larry Andersen | 58.3 | HOU |
| +075+ | 2.12 | Tom Henke | 51.3 | TOR |
| +076+ | 2.12 | Barry Jones | 56 | CHA |
| +081+ | 2.08 | Dennis Cook | 111.7 | PHI |
| +082+ | 2.05 | Darrel Akerfelds | 65.7 | PHI |
| +084+ | 2.04 | Mike Schooler | 50 | SEA |
| +083+ | 2.04 | Bill Landrum | 52.3 | PIT |
| +086+ | 2.02 | Zane Smith | 133.3 | WAS |
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