| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 6.37 | 199006080_KCA_OAK |
| Kansas City Royals | KCA | 2.59 | 199006090_KCA_OAK |
| Chicago White Sox | CHA | 2.38 | 199006100_CHA_MIN |
| Houston Astros | HOU | 1.95 | 199006080_CIN_HOU |
| New York Mets | NYN | 1.62 | 199006090_PIT_NYN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -4.94 | 199006100_SFN_ATL |
| Philadelphia Phillies | PHI | -3.8 | 199006090_PHI_CHN |
| Chicago Cubs | CHN | -1.72 | 199006080_PHI_CHN |
| St. Louis Cardinals | SLN | -1.7 | 199006090_SLN_WAS |
| New York Yankees | NYA | -1.25 | 199006090_NYA_BAL |
Based on accumulated WAA for this season up to 1990-06-10.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +014+ | 2.91 | Mark Eichhorn | 46.3 | ANA |
| +017+ | 2.76 | Gregg Olson | 35 | BAL |
| +021+ | 2.46 | Jeff Brantley | 43.7 | SFN |
| +038+ | 2.04 | Dennis Eckersley | 27.3 | OAK |
| +043+ | 1.95 | Bill Landrum | 28 | PIT |
| +047+ | 1.87 | Craig Lefferts | 32 | SDN |
| +048+ | 1.82 | Rob Dibble | 32 | CIN |
| +052+ | 1.77 | Doug Jones | 30.3 | CLE |
| +054+ | 1.77 | Greg Harris | 44.7 | SDN |
| +051+ | 1.77 | Larry Andersen | 33.7 | HOU |
| +056+ | 1.74 | Mark Williamson | 35.3 | BAL |
| +057+ | 1.72 | Barry Jones | 28.3 | CHA |
| +060+ | 1.7 | Jeff Montgomery | 39.3 | KCA |
| +064+ | 1.6 | Wayne Edwards | 27 | CHA |
| +066+ | 1.55 | Bill Sampen | 33.3 | WAS |
| +067+ | 1.51 | Bobby Thigpen | 30.7 | CHA |
| +070+ | 1.48 | Paul Gibson | 39 | DET |
| +071+ | 1.47 | Tom Henke | 30 | TOR |
| +072+ | 1.44 | Rick Aguilera | 27 | MIN |
| +077+ | 1.39 | Lee Guetterman | 33 | NYA |
| +080+ | 1.38 | Bill Swift | 35.7 | SEA |
| +083+ | 1.35 | Gene Nelson | 26.7 | OAK |
| +087+ | 1.29 | Edwin Nunez | 37 | DET |
| +090+ | 1.28 | Terry Leach | 34.3 | MIN |
| +093+ | 1.27 | Mike Schooler | 27.7 | SEA |
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