| Team | Tm | Tier | Game |
|---|---|---|---|
| New York Mets | NYN | 5.05 | 199004120_PIT_NYN |
| Oakland Athletics | OAK | 3.48 | 199004100_MIN_OAK |
| Boston Red Sox | BOS | 2.83 | 199004110_DET_BOS |
| Kansas City Royals | KCA | 2.81 | 199004110_BAL_KCA |
| Cincinnati Reds | CIN | 2.8 | 199004100_CIN_HOU |
| Team | Tm | Tier | Game |
|---|---|---|---|
| California Angels | ANA | -3.64 | 199004110_SEA_ANA |
| Detroit Tigers | DET | -2.67 | 199004100_DET_BOS |
| San Francisco Giants | SFN | -2.26 | 199004111_SFN_ATL |
| Seattle Mariners | SEA | -1.48 | 199004100_SEA_ANA |
| St. Louis Cardinals | SLN | -1.05 | 199004100_WAS_SLN |
Based on accumulated WAA for this season up to 1990-04-12.
| Rank | WAA | Name | IP | Tm |
|---|
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