| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 4.36 | 199008150_BOS_OAK |
| Pittsburgh Pirates | PIT | 1.53 | 199008150_ATL_PIT |
| Cincinnati Reds | CIN | 1.53 | 199008140_CIN_SLN |
| Chicago White Sox | CHA | 0.92 | 199008130_TOR_CHA |
| Baltimore Orioles | BAL | 0.72 | 199008130_BAL_SEA |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -7.39 | 199008141_ATL_PIT |
| Boston Red Sox | BOS | -3.46 | 199008130_BOS_OAK |
| Detroit Tigers | DET | -1.68 | 199008140_MIL_DET |
| Chicago Cubs | CHN | -1.27 | 199008150_HOU_CHN |
| San Diego Padres | SDN | -0.87 | 199008150_WAS_SDN |
Based on accumulated WAA for this season up to 1990-08-15.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +018+ | 4.25 | Jeff Brantley | 79 | SFN |
| +023+ | 3.89 | Mark Williamson | 84 | BAL |
| +026+ | 3.86 | Gregg Olson | 58.3 | BAL |
| +027+ | 3.85 | Doug Jones | 59.7 | CLE |
| +029+ | 3.71 | Dennis Eckersley | 50.3 | OAK |
| +033+ | 3.56 | Steve Farr | 86.7 | KCA |
| +041+ | 3.1 | Rob Dibble | 71.7 | CIN |
| +042+ | 3.1 | Randy Myers | 64.7 | CIN |
| +045+ | 3.06 | Edwin Nunez | 58.3 | DET |
| +048+ | 2.98 | Greg Harris | 89.3 | SDN |
| +049+ | 2.97 | Lee Smith | 71.7 | TOT |
| +053+ | 2.9 | Gene Nelson | 55.3 | OAK |
| +056+ | 2.69 | Jeff Montgomery | 70.3 | KCA |
| +058+ | 2.59 | Tom Henke | 56.3 | TOR |
| +061+ | 2.55 | Brad Arnsberg | 41.7 | TEX |
| +064+ | 2.54 | John Franco | 53 | NYN |
| +067+ | 2.51 | Larry Andersen | 64 | HOU |
| +070+ | 2.44 | Bobby Thigpen | 61.7 | CHA |
| +077+ | 2.24 | Bill Landrum | 59.3 | PIT |
| +083+ | 2.17 | Barry Jones | 58.7 | CHA |
| +094+ | 2.01 | Tim Crews | 74.3 | LAN |
| +096+ | 1.99 | Craig Lefferts | 66.7 | SDN |
| +099+ | 1.96 | Mike Schooler | 54 | SEA |
| +104+ | 1.92 | Terry Leach | 69 | MIN |
| +110+ | 1.85 | Dennis Cook | 119 | PHI |
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