| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 5.46 | 199006200_OAK_DET |
| Kansas City Royals | KCA | 2.28 | 199006200_SEA_KCA |
| Cincinnati Reds | CIN | 2.05 | 199006191_CIN_ATL |
| Baltimore Orioles | BAL | 1.4 | 199006210_BAL_CLE |
| Chicago White Sox | CHA | 1.16 | 199006200_ANA_CHA |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -4.24 | 199006210_CIN_ATL |
| St. Louis Cardinals | SLN | -2.91 | 199006200_SLN_NYN |
| Chicago Cubs | CHN | -2.76 | 199006190_CHN_WAS |
| California Angels | ANA | -1 | 199006190_ANA_CHA |
| Philadelphia Phillies | PHI | -0.84 | 199006200_PIT_PHI |
Based on accumulated WAA for this season up to 1990-06-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +010+ | 3.52 | Mark Eichhorn | 53 | ANA |
| +021+ | 2.84 | Gregg Olson | 38.3 | BAL |
| +023+ | 2.78 | Jeff Brantley | 54.3 | SFN |
| +033+ | 2.51 | Mark Williamson | 46.3 | BAL |
| +036+ | 2.41 | Dennis Eckersley | 31.3 | OAK |
| +038+ | 2.34 | Greg Harris | 51.3 | SDN |
| +039+ | 2.33 | Craig Lefferts | 39.7 | SDN |
| +045+ | 2.17 | Bill Swift | 44.3 | SEA |
| +047+ | 2.13 | Larry Andersen | 39.7 | HOU |
| +049+ | 2.09 | Doug Jones | 36.3 | CLE |
| +050+ | 2.07 | Edwin Nunez | 45.7 | DET |
| +054+ | 1.98 | Bill Landrum | 33 | PIT |
| +057+ | 1.91 | Rob Dibble | 40 | CIN |
| +059+ | 1.89 | Bill Sampen | 39.3 | WAS |
| +058+ | 1.89 | Paul Gibson | 43.7 | DET |
| +060+ | 1.88 | Bobby Thigpen | 34.7 | CHA |
| +062+ | 1.83 | Rick Aguilera | 31 | MIN |
| +065+ | 1.73 | Tom Henke | 35.3 | TOR |
| +067+ | 1.7 | Jeff Montgomery | 44 | KCA |
| +068+ | 1.69 | Gene Nelson | 30.3 | OAK |
| +069+ | 1.67 | Barry Jones | 32.3 | CHA |
| +073+ | 1.65 | Lee Guetterman | 40.7 | NYA |
| +083+ | 1.54 | Juan Agosto | 42.3 | HOU |
| +089+ | 1.47 | Mike Henneman | 41.3 | DET |
| +090+ | 1.46 | Steve Farr | 43.7 | KCA |
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