| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 5.2 | 199006180_OAK_DET |
| Houston Astros | HOU | 3.23 | 199006160_HOU_CIN |
| Cincinnati Reds | CIN | 1.72 | 199006170_HOU_CIN |
| Chicago White Sox | CHA | 1.52 | 199006160_OAK_CHA |
| Kansas City Royals | KCA | 1.06 | 199006160_MIN_KCA |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -5.29 | 199006170_ATL_SFN |
| Chicago Cubs | CHN | -2.57 | 199006180_CHN_WAS |
| St. Louis Cardinals | SLN | -1.25 | 199006170_WAS_SLN |
| California Angels | ANA | -0.98 | 199006170_ANA_DET |
| Philadelphia Phillies | PHI | -0.71 | 199006160_CHN_PHI |
Based on accumulated WAA for this season up to 1990-06-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +014+ | 3.23 | Mark Eichhorn | 49.7 | ANA |
| +019+ | 2.88 | Gregg Olson | 36.3 | BAL |
| +029+ | 2.54 | Jeff Brantley | 51.3 | SFN |
| +032+ | 2.41 | Mark Williamson | 45 | BAL |
| +035+ | 2.32 | Dennis Eckersley | 30.3 | OAK |
| +041+ | 2.19 | Rob Dibble | 38.3 | CIN |
| +044+ | 2.15 | Craig Lefferts | 35 | SDN |
| +046+ | 2.13 | Greg Harris | 48.7 | SDN |
| +047+ | 2.05 | Bill Landrum | 31.3 | PIT |
| +049+ | 2.01 | Doug Jones | 33 | CLE |
| +051+ | 1.96 | Larry Andersen | 37.7 | HOU |
| +054+ | 1.94 | Bill Sampen | 37.3 | WAS |
| +052+ | 1.94 | Bill Swift | 41.7 | SEA |
| +056+ | 1.84 | Edwin Nunez | 43 | DET |
| +065+ | 1.69 | Gene Nelson | 30.3 | OAK |
| +067+ | 1.65 | Rick Aguilera | 29 | MIN |
| +068+ | 1.63 | Jeff Montgomery | 43 | KCA |
| +069+ | 1.63 | Tom Henke | 34 | TOR |
| +071+ | 1.62 | Bobby Thigpen | 31.7 | CHA |
| +073+ | 1.6 | Rick Honeycutt | 27 | OAK |
| +075+ | 1.57 | Paul Gibson | 40 | DET |
| +080+ | 1.51 | Lee Guetterman | 36.7 | NYA |
| +083+ | 1.47 | Barry Jones | 30 | CHA |
| +085+ | 1.45 | Juan Agosto | 41.3 | HOU |
| +088+ | 1.43 | Terry Leach | 35.7 | MIN |
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