| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 4.93 | 199007290_OAK_MIN |
| Cincinnati Reds | CIN | 2.08 | 199007280_CIN_SFN |
| Baltimore Orioles | BAL | 1.06 | 199007290_BAL_KCA |
| Kansas City Royals | KCA | 0.98 | 199007270_BAL_KCA |
| New York Mets | NYN | 0.97 | 199007280_SLN_NYN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Chicago Cubs | CHN | -5.75 | 199007290_CHN_WAS |
| Atlanta Braves | ATL | -5.53 | 199007270_ATL_LAN |
| Boston Red Sox | BOS | -2.4 | 199007290_BOS_DET |
| Milwaukee Brewers | MIL | -1.21 | 199007290_MIL_CHA |
| California Angels | ANA | -1.2 | 199007270_ANA_SEA |
Based on accumulated WAA for this season up to 1990-07-29.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +015+ | 4.15 | Mark Williamson | 69 | BAL |
| +020+ | 3.81 | Jeff Brantley | 72.3 | SFN |
| +026+ | 3.45 | Gregg Olson | 52 | BAL |
| +029+ | 3.33 | Doug Jones | 52 | CLE |
| +035+ | 3.05 | Dennis Eckersley | 43 | OAK |
| +040+ | 2.86 | Lee Smith | 61 | TOT |
| +048+ | 2.74 | Rob Dibble | 60.7 | CIN |
| +050+ | 2.69 | Steve Farr | 70.7 | KCA |
| +055+ | 2.4 | Jeff Montgomery | 63 | KCA |
| +060+ | 2.35 | Bill Landrum | 51.3 | PIT |
| +062+ | 2.35 | Randy Myers | 54 | CIN |
| +061+ | 2.35 | Bobby Thigpen | 54.3 | CHA |
| +063+ | 2.33 | Gene Nelson | 46.7 | OAK |
| +075+ | 2.14 | Barry Jones | 54.3 | CHA |
| +073+ | 2.14 | Darrel Akerfelds | 62.3 | PHI |
| +078+ | 2.09 | John Franco | 46 | NYN |
| +080+ | 2.02 | Paul Gibson | 68 | DET |
| +081+ | 2.01 | Tom Henke | 50.3 | TOR |
| +082+ | 2 | Larry Andersen | 56.3 | HOU |
| +084+ | 2 | Keith Comstock | 35.7 | SEA |
| +083+ | 2 | Zane Smith | 126.3 | WAS |
| +086+ | 1.92 | Mike Schooler | 46.3 | SEA |
| +089+ | 1.88 | Terry Leach | 57.3 | MIN |
| +090+ | 1.85 | Greg Harris | 76.3 | SDN |
| +092+ | 1.82 | Brad Arnsberg | 31.7 | TEX |
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