| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 5.51 | 199006090_KCA_OAK |
| Kansas City Royals | KCA | 2.59 | 199006090_KCA_OAK |
| Chicago White Sox | CHA | 2.38 | 199006100_CHA_MIN |
| Houston Astros | HOU | 1.89 | 199006100_CIN_HOU |
| New York Mets | NYN | 1.62 | 199006090_PIT_NYN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -8.91 | 199006110_SFN_ATL |
| Philadelphia Phillies | PHI | -3.8 | 199006090_PHI_CHN |
| St. Louis Cardinals | SLN | -1.7 | 199006090_SLN_WAS |
| New York Yankees | NYA | -1.25 | 199006090_NYA_BAL |
| Chicago Cubs | CHN | -0.99 | 199006090_PHI_CHN |
Based on accumulated WAA for this season up to 1990-06-11.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +014+ | 2.9 | Mark Eichhorn | 46.3 | ANA |
| +017+ | 2.75 | Gregg Olson | 35 | BAL |
| +022+ | 2.52 | Jeff Brantley | 44.3 | SFN |
| +037+ | 2.04 | Dennis Eckersley | 27.3 | OAK |
| +040+ | 1.94 | Larry Andersen | 35.7 | HOU |
| +042+ | 1.92 | Bill Landrum | 30 | PIT |
| +047+ | 1.86 | Craig Lefferts | 32 | SDN |
| +048+ | 1.84 | Doug Jones | 31.3 | CLE |
| +049+ | 1.81 | Rob Dibble | 32 | CIN |
| +053+ | 1.76 | Greg Harris | 44.7 | SDN |
| +054+ | 1.73 | Mark Williamson | 35.3 | BAL |
| +057+ | 1.72 | Barry Jones | 28.3 | CHA |
| +058+ | 1.69 | Jeff Montgomery | 39.3 | KCA |
| +064+ | 1.54 | Bill Sampen | 33.3 | WAS |
| +067+ | 1.51 | Bobby Thigpen | 30.7 | CHA |
| +070+ | 1.48 | Wayne Edwards | 28 | CHA |
| +073+ | 1.47 | Tom Henke | 30 | TOR |
| +072+ | 1.47 | Paul Gibson | 39 | DET |
| +075+ | 1.44 | Rick Aguilera | 27 | MIN |
| +076+ | 1.44 | Gene Nelson | 27.7 | OAK |
| +084+ | 1.38 | Lee Guetterman | 33 | NYA |
| +086+ | 1.37 | Bill Swift | 35.7 | SEA |
| +087+ | 1.35 | Bill Krueger | 49 | MIL |
| +092+ | 1.29 | Mitch Williams | 32.7 | CHN |
| +093+ | 1.29 | Edwin Nunez | 37 | DET |
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