| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 4.53 | 199007310_SEA_OAK |
| Cincinnati Reds | CIN | 2.05 | 199008010_CIN_SDN |
| Pittsburgh Pirates | PIT | 1.5 | 199008020_PIT_CHN |
| Cleveland Indians | CLE | 1.29 | 199007310_KCA_CLE |
| Houston Astros | HOU | 0.94 | 199008020_ATL_HOU |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Detroit Tigers | DET | -5.34 | 199007310_DET_NYA |
| Chicago Cubs | CHN | -4.78 | 199007310_PIT_CHN |
| Atlanta Braves | ATL | -3.73 | 199007310_ATL_SDN |
| Boston Red Sox | BOS | -2.05 | 199007310_CHA_BOS |
| California Angels | ANA | -0.64 | 199007310_ANA_MIN |
Based on accumulated WAA for this season up to 1990-08-02.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +016+ | 4 | Jeff Brantley | 74.3 | SFN |
| +018+ | 3.93 | Mark Williamson | 73.3 | BAL |
| +024+ | 3.64 | Gregg Olson | 54 | BAL |
| +028+ | 3.53 | Doug Jones | 54 | CLE |
| +033+ | 3.26 | Dennis Eckersley | 45.3 | OAK |
| +034+ | 3.21 | Lee Smith | 64.7 | TOT |
| +040+ | 3.02 | Steve Farr | 74 | KCA |
| +044+ | 2.73 | Rob Dibble | 62.7 | CIN |
| +048+ | 2.6 | Randy Myers | 56.7 | CIN |
| +050+ | 2.56 | Bobby Thigpen | 56.3 | CHA |
| +052+ | 2.54 | Gene Nelson | 49 | OAK |
| +062+ | 2.37 | Brad Arnsberg | 37.7 | TEX |
| +065+ | 2.33 | Terry Leach | 62 | MIN |
| +067+ | 2.27 | John Franco | 48 | NYN |
| +071+ | 2.21 | Greg Harris | 80.3 | SDN |
| +072+ | 2.2 | Larry Andersen | 58.3 | HOU |
| +073+ | 2.19 | Jeff Montgomery | 65 | KCA |
| +077+ | 2.11 | Tom Henke | 51.3 | TOR |
| +076+ | 2.11 | Barry Jones | 56 | CHA |
| +078+ | 2.1 | Tom Candiotti | 131.7 | CLE |
| +081+ | 2.04 | Darrel Akerfelds | 65.7 | PHI |
| +080+ | 2.04 | Paul Gibson | 70.7 | DET |
| +082+ | 2.04 | Bill Landrum | 52.3 | PIT |
| +085+ | 1.99 | Zane Smith | 133.3 | WAS |
| +093+ | 1.88 | Tim Crews | 68.7 | LAN |
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