| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 4.64 | 199007300_SEA_OAK |
| Cincinnati Reds | CIN | 2.05 | 199008010_CIN_SDN |
| Cleveland Indians | CLE | 1.29 | 199007310_KCA_CLE |
| Pittsburgh Pirates | PIT | 1.05 | 199008010_PIT_CHN |
| Baltimore Orioles | BAL | 1.05 | 199007300_TOR_BAL |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Detroit Tigers | DET | -6.06 | 199007300_DET_NYA |
| Chicago Cubs | CHN | -4.78 | 199007310_PIT_CHN |
| Atlanta Braves | ATL | -4.22 | 199007300_ATL_SDN |
| Boston Red Sox | BOS | -2.15 | 199007300_CHA_BOS |
| Milwaukee Brewers | MIL | -1.27 | 199007300_TEX_MIL |
Based on accumulated WAA for this season up to 1990-08-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +017+ | 4.01 | Jeff Brantley | 74.3 | SFN |
| +019+ | 3.93 | Mark Williamson | 73.3 | BAL |
| +026+ | 3.58 | Gregg Olson | 53.3 | BAL |
| +029+ | 3.53 | Doug Jones | 54 | CLE |
| +033+ | 3.17 | Dennis Eckersley | 44.3 | OAK |
| +038+ | 3.03 | Lee Smith | 62.7 | TOT |
| +039+ | 3.01 | Steve Farr | 74 | KCA |
| +045+ | 2.73 | Rob Dibble | 62.7 | CIN |
| +049+ | 2.61 | Randy Myers | 56.7 | CIN |
| +055+ | 2.46 | Bill Landrum | 52.3 | PIT |
| +061+ | 2.4 | Gene Nelson | 47.3 | OAK |
| +062+ | 2.38 | Bobby Thigpen | 54.3 | CHA |
| +067+ | 2.27 | John Franco | 48 | NYN |
| +071+ | 2.17 | Barry Jones | 54.3 | CHA |
| +070+ | 2.17 | Terry Leach | 60.3 | MIN |
| +073+ | 2.14 | Brad Arnsberg | 35 | TEX |
| +072+ | 2.14 | Paul Gibson | 69 | DET |
| +076+ | 2.12 | Tom Henke | 51.3 | TOR |
| +079+ | 2.1 | Jeff Montgomery | 64 | KCA |
| +077+ | 2.1 | Tom Candiotti | 131.7 | CLE |
| +082+ | 2.04 | Greg Harris | 78.3 | SDN |
| +083+ | 2.02 | Larry Andersen | 56.3 | HOU |
| +085+ | 2 | Zane Smith | 133.3 | WAS |
| +092+ | 1.87 | Tim Crews | 68.7 | LAN |
| +094+ | 1.82 | Dennis Cook | 109 | PHI |
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