| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 4.92 | 199007281_OAK_MIN |
| Cincinnati Reds | CIN | 2.08 | 199007280_CIN_SFN |
| Pittsburgh Pirates | PIT | 1.09 | 199007260_PHI_PIT |
| Kansas City Royals | KCA | 0.98 | 199007270_BAL_KCA |
| New York Mets | NYN | 0.97 | 199007280_SLN_NYN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -5.53 | 199007270_ATL_LAN |
| Chicago Cubs | CHN | -4.97 | 199007280_CHN_WAS |
| California Angels | ANA | -1.37 | 199007260_ANA_OAK |
| Boston Red Sox | BOS | -1.26 | 199007280_BOS_DET |
| Milwaukee Brewers | MIL | -1 | 199007280_MIL_CHA |
Based on accumulated WAA for this season up to 1990-07-28.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +013+ | 4.14 | Mark Williamson | 69 | BAL |
| +020+ | 3.8 | Jeff Brantley | 72.3 | SFN |
| +027+ | 3.36 | Gregg Olson | 51 | BAL |
| +029+ | 3.24 | Doug Jones | 51 | CLE |
| +034+ | 3.05 | Dennis Eckersley | 43 | OAK |
| +042+ | 2.85 | Lee Smith | 61 | TOT |
| +050+ | 2.73 | Rob Dibble | 60.7 | CIN |
| +052+ | 2.68 | Steve Farr | 70.7 | KCA |
| +057+ | 2.4 | Jeff Montgomery | 63 | KCA |
| +062+ | 2.35 | Bill Landrum | 51.3 | PIT |
| +064+ | 2.34 | Randy Myers | 54 | CIN |
| +065+ | 2.33 | Gene Nelson | 46.7 | OAK |
| +067+ | 2.26 | Bobby Thigpen | 53.3 | CHA |
| +070+ | 2.08 | John Franco | 46 | NYN |
| +074+ | 2.02 | Barry Jones | 53 | CHA |
| +075+ | 2.01 | Paul Gibson | 68 | DET |
| +077+ | 2 | Larry Andersen | 56.3 | HOU |
| +076+ | 2 | Tom Henke | 50.3 | TOR |
| +079+ | 1.99 | Keith Comstock | 35.7 | SEA |
| +081+ | 1.97 | Greg Harris | 75.3 | SDN |
| +082+ | 1.95 | Darrel Akerfelds | 60.3 | PHI |
| +085+ | 1.92 | Mike Schooler | 46.3 | SEA |
| +089+ | 1.88 | Terry Leach | 57.3 | MIN |
| +093+ | 1.82 | Brad Arnsberg | 31.7 | TEX |
| +106+ | 1.61 | Tim Crews | 63.7 | LAN |
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