| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 4.93 | 199007290_OAK_MIN |
| Cincinnati Reds | CIN | 1.98 | 199007290_CIN_SFN |
| Cleveland Indians | CLE | 1.29 | 199007310_KCA_CLE |
| Baltimore Orioles | BAL | 1.06 | 199007290_BAL_KCA |
| Chicago White Sox | CHA | 0.92 | 199007310_CHA_BOS |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Detroit Tigers | DET | -6.06 | 199007300_DET_NYA |
| Chicago Cubs | CHN | -5.75 | 199007290_CHN_WAS |
| Atlanta Braves | ATL | -4.8 | 199007290_ATL_LAN |
| Boston Red Sox | BOS | -2.4 | 199007290_BOS_DET |
| Milwaukee Brewers | MIL | -1.27 | 199007300_TEX_MIL |
Based on accumulated WAA for this season up to 1990-07-31.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +017+ | 3.99 | Jeff Brantley | 74.3 | SFN |
| +018+ | 3.92 | Mark Williamson | 71 | BAL |
| +027+ | 3.58 | Gregg Olson | 53.3 | BAL |
| +031+ | 3.33 | Doug Jones | 52 | CLE |
| +032+ | 3.17 | Dennis Eckersley | 44.3 | OAK |
| +036+ | 3.01 | Lee Smith | 62.7 | TOT |
| +045+ | 2.75 | Rob Dibble | 60.7 | CIN |
| +048+ | 2.69 | Steve Farr | 70.7 | KCA |
| +051+ | 2.6 | Randy Myers | 56.7 | CIN |
| +056+ | 2.45 | Bill Landrum | 52.3 | PIT |
| +058+ | 2.4 | Gene Nelson | 47.3 | OAK |
| +060+ | 2.36 | Bobby Thigpen | 54.3 | CHA |
| +070+ | 2.15 | Darrel Akerfelds | 62.3 | PHI |
| +068+ | 2.15 | Barry Jones | 54.3 | CHA |
| +073+ | 2.13 | Paul Gibson | 69 | DET |
| +072+ | 2.13 | Brad Arnsberg | 35 | TEX |
| +077+ | 2.1 | John Franco | 46 | NYN |
| +076+ | 2.1 | Terry Leach | 59.7 | MIN |
| +078+ | 2.09 | Tom Candiotti | 131.7 | CLE |
| +079+ | 2.08 | Jeff Montgomery | 64 | KCA |
| +085+ | 2.02 | Tom Henke | 50.3 | TOR |
| +084+ | 2.02 | Greg Harris | 78.3 | SDN |
| +087+ | 2.01 | Zane Smith | 126.3 | WAS |
| +086+ | 2.01 | Larry Andersen | 56.3 | HOU |
| +091+ | 1.93 | Mike Schooler | 46.3 | SEA |
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