| Team | Tm | Tier | Game |
|---|---|---|---|
| New York Mets | NYN | 3.41 | 199005030_CIN_NYN |
| Houston Astros | HOU | 3.39 | 199005020_HOU_PHI |
| Oakland Athletics | OAK | 2.56 | 199005040_BOS_OAK |
| Cincinnati Reds | CIN | 1.55 | 199005040_CIN_SLN |
| Cleveland Indians | CLE | 1.12 | 199005030_CLE_NYA |
| Team | Tm | Tier | Game |
|---|---|---|---|
| California Angels | ANA | -3.95 | 199005020_ANA_BAL |
| San Francisco Giants | SFN | -3.02 | 199005020_CHN_SFN |
| Atlanta Braves | ATL | -2.49 | 199005020_ATL_WAS |
| St. Louis Cardinals | SLN | -1.21 | 199005020_SLN_SDN |
| Detroit Tigers | DET | -0.78 | 199005040_DET_TOR |
Based on accumulated WAA for this season up to 1990-05-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +017+ | 1.38 | Rob Dibble | 15.7 | CIN |
| +022+ | 1.27 | Mark Eichhorn | 19.3 | ANA |
| XXXXX | 1.23 | Gregg Olson | 14.3 | BAL |
| XXXXX | 1.21 | Duane Ward | 18 | TOR |
| XXXXX | 1.21 | Paul Assenmacher | 20.7 | CHN |
| XXXXX | 1.2 | Terry Leach | 13.3 | MIN |
| XXXXX | 1.16 | Mitch Williams | 13 | CHN |
| XXXXX | 1.04 | Ted Power | 11.7 | PIT |
| XXXXX | 1.04 | Doug Jones | 11.3 | CLE |
| XXXXX | 1.02 | Juan Agosto | 14.3 | HOU |
| XXXXX | 1 | Wayne Edwards | 14 | CHA |
| XXXXX | 1 | Greg Harris | 16 | SDN |
| XXXXX | 0.96 | Don Carman | 13 | PHI |
| XXXXX | 0.96 | Dennis Eckersley | 11.3 | OAK |
| XXXXX | 0.81 | Bill Sampen | 9.3 | WAS |
| XXXXX | 0.81 | Dan Schatzeder | 14.3 | HOU |
| XXXXX | 0.78 | Dave Smith | 14 | HOU |
| XXXXX | 0.77 | Bill Landrum | 11 | PIT |
| XXXXX | 0.77 | Barry Jones | 11.3 | CHA |
| XXXXX | 0.75 | Darrel Akerfelds | 8.3 | PHI |
| XXXXX | 0.75 | Keith Comstock | 10.7 | SEA |
| XXXXX | 0.75 | Ken Dayley | 8.3 | SLN |
| XXXXX | 0.74 | Jeff Reardon | 8.3 | BOS |
| XXXXX | 0.74 | Bob Patterson | 10.7 | PIT |
| XXXXX | 0.72 | Dave Wells | 10.3 | TOR |
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