| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 4.34 | 199006140_OAK_CHA |
| Houston Astros | HOU | 3.16 | 199006130_LAN_HOU |
| Kansas City Royals | KCA | 1.8 | 199006120_KCA_ANA |
| Chicago White Sox | CHA | 1.75 | 199006120_CHA_SEA |
| Cincinnati Reds | CIN | 1.57 | 199006130_ATL_CIN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -8.48 | 199006121_ATL_CIN |
| Philadelphia Phillies | PHI | -1.65 | 199006120_WAS_PHI |
| New York Yankees | NYA | -1.02 | 199006130_BOS_NYA |
| California Angels | ANA | -0.65 | 199006120_KCA_ANA |
| Milwaukee Brewers | MIL | -0.6 | 199006130_MIL_BAL |
Based on accumulated WAA for this season up to 1990-06-14.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +016+ | 2.96 | Mark Eichhorn | 46.7 | ANA |
| +021+ | 2.8 | Gregg Olson | 35.3 | BAL |
| +022+ | 2.72 | Jeff Brantley | 46.3 | SFN |
| +035+ | 2.26 | Mark Williamson | 41 | BAL |
| +036+ | 2.17 | Dennis Eckersley | 28.7 | OAK |
| +045+ | 1.96 | Larry Andersen | 35.7 | HOU |
| +044+ | 1.96 | Bill Landrum | 30.3 | PIT |
| +047+ | 1.93 | Bill Sampen | 37.3 | WAS |
| +049+ | 1.92 | Rob Dibble | 35.3 | CIN |
| +051+ | 1.88 | Craig Lefferts | 32 | SDN |
| +052+ | 1.87 | Greg Harris | 45.7 | SDN |
| +053+ | 1.86 | Doug Jones | 31.3 | CLE |
| +056+ | 1.83 | Barry Jones | 29.3 | CHA |
| +059+ | 1.78 | Jeff Montgomery | 40 | KCA |
| +062+ | 1.67 | Tom Henke | 32 | TOR |
| +063+ | 1.66 | Gene Nelson | 30 | OAK |
| +065+ | 1.63 | Bill Swift | 38.3 | SEA |
| +066+ | 1.62 | Bobby Thigpen | 31.7 | CHA |
| +068+ | 1.58 | Lee Guetterman | 35 | NYA |
| +073+ | 1.52 | Paul Gibson | 39.3 | DET |
| +078+ | 1.49 | Edwin Nunez | 39 | DET |
| +079+ | 1.48 | Rick Honeycutt | 25.7 | OAK |
| +080+ | 1.45 | Rick Aguilera | 27 | MIN |
| +085+ | 1.42 | Terry Leach | 35.7 | MIN |
| +087+ | 1.38 | Wayne Edwards | 29 | CHA |
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