| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 3.39 | 199008250_OAK_DET |
| Cincinnati Reds | CIN | 1.45 | 199008260_CIN_PIT |
| Kansas City Royals | KCA | 1.45 | 199008250_SEA_KCA |
| Pittsburgh Pirates | PIT | 0.86 | 199008250_CIN_PIT |
| Montreal Expos | WAS | 0.78 | 199008270_SDN_WAS |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -9.11 | 199008250_CHN_ATL |
| Boston Red Sox | BOS | -2.56 | 199008270_BOS_CLE |
| Philadelphia Phillies | PHI | -1.06 | 199008260_PHI_SFN |
| San Diego Padres | SDN | -0.76 | 199008270_SDN_WAS |
| Milwaukee Brewers | MIL | -0.6 | 199008260_MIL_NYA |
Based on accumulated WAA for this season up to 1990-08-27.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +018+ | 4.44 | Jeff Brantley | 82 | SFN |
| +020+ | 4.3 | Bill Swift | 108 | SEA |
| +022+ | 4.27 | Steve Farr | 95.3 | KCA |
| +026+ | 4.13 | Dennis Eckersley | 55.3 | OAK |
| +027+ | 4.07 | Doug Jones | 62.7 | CLE |
| +037+ | 3.56 | Gregg Olson | 62.7 | BAL |
| +040+ | 3.38 | Randy Myers | 68.3 | CIN |
| +041+ | 3.37 | Rob Dibble | 77.7 | CIN |
| +044+ | 3.33 | Edwin Nunez | 64.3 | DET |
| +045+ | 3.32 | Gene Nelson | 62.7 | OAK |
| +048+ | 3.26 | Jeff Montgomery | 77.3 | KCA |
| +051+ | 3.14 | Larry Andersen | 71.7 | HOU |
| +056+ | 2.95 | Lee Smith | 74.7 | TOT |
| +059+ | 2.83 | Greg Harris | 93.3 | SDN |
| +062+ | 2.69 | Tom Henke | 60.3 | TOR |
| +064+ | 2.67 | Bobby Thigpen | 69.7 | CHA |
| +065+ | 2.65 | Brad Arnsberg | 50.3 | TEX |
| +066+ | 2.63 | John Franco | 57 | NYN |
| +076+ | 2.41 | Tim Crews | 80 | LAN |
| +077+ | 2.4 | Barry Jones | 64.3 | CHA |
| +082+ | 2.2 | Dan Schatzeder | 59 | HOU |
| +088+ | 2.12 | Mike Schooler | 56 | SEA |
| +089+ | 2.11 | Craig Lefferts | 71 | SDN |
| +092+ | 2.07 | Jay Howell | 53 | LAN |
| +093+ | 2.05 | Curt Schilling | 34.3 | BAL |
_