| Team | Tm | Tier | Game |
|---|---|---|---|
| New York Mets | NYN | 4.92 | 199004210_WAS_NYN |
| Cincinnati Reds | CIN | 2.51 | 199004220_ATL_CIN |
| Kansas City Royals | KCA | 1.78 | 199004210_KCA_TOR |
| Oakland Athletics | OAK | 1.54 | 199004220_SEA_OAK |
| Cleveland Indians | CLE | 1.43 | 199004230_CLE_TOR |
| Team | Tm | Tier | Game |
|---|---|---|---|
| San Francisco Giants | SFN | -3.64 | 199004210_SFN_SDN |
| California Angels | ANA | -3.57 | 199004210_ANA_MIN |
| Atlanta Braves | ATL | -3.32 | 199004220_ATL_CIN |
| Detroit Tigers | DET | -0.85 | 199004210_DET_BAL |
| Baltimore Orioles | BAL | -0.76 | 199004220_DET_BAL |
Based on accumulated WAA for this season up to 1990-04-23.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +008+ | 1.27 | Duane Ward | 14 | TOR |
| XXXXX | 1.06 | Paul Assenmacher | 14.3 | CHN |
| XXXXX | 0.91 | Terry Leach | 10 | MIN |
| XXXXX | 0.82 | Atlee Hammaker | 16 | SFN |
| XXXXX | 0.81 | Rob Dibble | 9.3 | CIN |
| XXXXX | 0.76 | Greg Harris | 13 | SDN |
| XXXXX | 0.75 | Dan Petry | 13 | DET |
| XXXXX | 0.74 | Ted Power | 8 | PIT |
| XXXXX | 0.74 | Mitch Williams | 8.3 | CHN |
| XXXXX | 0.74 | Gregg Olson | 8.3 | BAL |
| XXXXX | 0.73 | Tim Crews | 8 | LAN |
| XXXXX | 0.73 | Mark Eichhorn | 13.3 | ANA |
| XXXXX | 0.68 | Dave Smith | 7.7 | HOU |
| XXXXX | 0.64 | Bill Landrum | 7 | PIT |
| XXXXX | 0.63 | Brian Holman | 21 | SEA |
| XXXXX | 0.58 | Barry Jones | 6.3 | CHA |
| XXXXX | 0.57 | Greg Minton | 6.7 | ANA |
| XXXXX | 0.57 | Gene Nelson | 6.7 | OAK |
| XXXXX | 0.56 | Dan Schatzeder | 8.7 | HOU |
| XXXXX | 0.54 | Lee Smith | 8.3 | BOS |
| XXXXX | 0.54 | Ken Dayley | 6 | SLN |
| XXXXX | 0.51 | Dennis Eckersley | 6 | OAK |
| XXXXX | 0.5 | Eric Plunk | 5.3 | NYA |
| XXXXX | 0.49 | Don Carman | 5.3 | PHI |
| XXXXX | 0.48 | Ray Searage | 5.3 | LAN |
_