| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 5.38 | 199006190_OAK_DET |
| Cincinnati Reds | CIN | 2.05 | 199006191_CIN_ATL |
| Houston Astros | HOU | 2.01 | 199006170_HOU_CIN |
| Chicago White Sox | CHA | 1.4 | 199006170_OAK_CHA |
| Kansas City Royals | KCA | 1 | 199006190_SEA_KCA |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -5.29 | 199006170_ATL_SFN |
| Chicago Cubs | CHN | -2.76 | 199006190_CHN_WAS |
| St. Louis Cardinals | SLN | -1.44 | 199006190_SLN_NYN |
| California Angels | ANA | -1 | 199006190_ANA_CHA |
| Philadelphia Phillies | PHI | -0.81 | 199006190_PIT_PHI |
Based on accumulated WAA for this season up to 1990-06-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +011+ | 3.36 | Mark Eichhorn | 51.3 | ANA |
| +021+ | 2.75 | Gregg Olson | 37.3 | BAL |
| +029+ | 2.52 | Jeff Brantley | 51.3 | SFN |
| +030+ | 2.52 | Mark Williamson | 46.3 | BAL |
| +033+ | 2.31 | Dennis Eckersley | 30.3 | OAK |
| +038+ | 2.26 | Greg Harris | 50.3 | SDN |
| +040+ | 2.21 | Rob Dibble | 38.7 | CIN |
| +042+ | 2.17 | Bill Swift | 44.3 | SEA |
| +044+ | 2.13 | Craig Lefferts | 37.3 | SDN |
| +051+ | 1.97 | Doug Jones | 35 | CLE |
| +050+ | 1.97 | Bill Landrum | 33 | PIT |
| +054+ | 1.94 | Larry Andersen | 37.7 | HOU |
| +056+ | 1.89 | Bill Sampen | 39.3 | WAS |
| +057+ | 1.88 | Paul Gibson | 43.7 | DET |
| +059+ | 1.82 | Edwin Nunez | 43 | DET |
| +065+ | 1.7 | Jeff Montgomery | 44 | KCA |
| +066+ | 1.69 | Bobby Thigpen | 32.7 | CHA |
| +069+ | 1.68 | Gene Nelson | 30.3 | OAK |
| +070+ | 1.68 | Rick Honeycutt | 28 | OAK |
| +071+ | 1.64 | Rick Aguilera | 29 | MIN |
| +072+ | 1.61 | Tom Henke | 34 | TOR |
| +078+ | 1.53 | Juan Agosto | 42.3 | HOU |
| +085+ | 1.48 | Terry Leach | 36.3 | MIN |
| +088+ | 1.47 | Lee Guetterman | 38.7 | NYA |
| +090+ | 1.46 | Mike Henneman | 41.3 | DET |
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