| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 3.85 | 199008050_OAK_ANA |
| Cleveland Indians | CLE | 1.91 | 199008050_CLE_NYA |
| Cincinnati Reds | CIN | 1.45 | 199008040_SDN_CIN |
| Pittsburgh Pirates | PIT | 1.33 | 199008050_PIT_PHI |
| Chicago White Sox | CHA | 0.87 | 199008040_CHA_MIL |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Detroit Tigers | DET | -5.05 | 199008040_DET_BOS |
| Chicago Cubs | CHN | -4.26 | 199008050_WAS_CHN |
| Atlanta Braves | ATL | -2.92 | 199008040_ATL_HOU |
| Boston Red Sox | BOS | -1.75 | 199008050_DET_BOS |
| Philadelphia Phillies | PHI | -1.09 | 199008061_PIT_PHI |
Based on accumulated WAA for this season up to 1990-08-06.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +019+ | 4.02 | Jeff Brantley | 74.3 | SFN |
| +023+ | 3.76 | Mark Williamson | 76 | BAL |
| +026+ | 3.65 | Gregg Olson | 54 | BAL |
| +028+ | 3.57 | Doug Jones | 54.3 | CLE |
| +029+ | 3.5 | Dennis Eckersley | 48 | OAK |
| +033+ | 3.28 | Steve Farr | 79 | KCA |
| +045+ | 2.83 | Lee Smith | 67.3 | TOT |
| +047+ | 2.75 | Randy Myers | 58.3 | CIN |
| +048+ | 2.69 | Rob Dibble | 64.7 | CIN |
| +049+ | 2.69 | Bobby Thigpen | 57.7 | CHA |
| +052+ | 2.63 | Gene Nelson | 50 | OAK |
| +059+ | 2.48 | Greg Harris | 83.3 | SDN |
| +066+ | 2.39 | Jeff Montgomery | 67 | KCA |
| +067+ | 2.38 | John Franco | 49 | NYN |
| +070+ | 2.31 | Bill Landrum | 55.3 | PIT |
| +071+ | 2.3 | Larry Andersen | 59.3 | HOU |
| +073+ | 2.28 | Tom Henke | 53 | TOR |
| +072+ | 2.28 | Brad Arnsberg | 39 | TEX |
| +076+ | 2.21 | Keith Comstock | 42.7 | SEA |
| +077+ | 2.15 | Barry Jones | 56.3 | CHA |
| +081+ | 2.11 | Terry Leach | 64.3 | MIN |
| +082+ | 2.09 | Darrel Akerfelds | 68.7 | PHI |
| +085+ | 2.04 | Mike Schooler | 50 | SEA |
| +091+ | 1.98 | Tim Crews | 69.7 | LAN |
| +094+ | 1.96 | Dennis Cook | 117.7 | PHI |
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