| Team | Tm | Tier | Game |
|---|---|---|---|
| New York Mets | NYN | 4.67 | 199004180_CHN_NYN |
| Kansas City Royals | KCA | 3.75 | 199004180_CLE_KCA |
| Cincinnati Reds | CIN | 2.65 | 199004180_SDN_CIN |
| Oakland Athletics | OAK | 1.36 | 199004170_OAK_ANA |
| Boston Red Sox | BOS | 0.85 | 199004160_MIL_BOS |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -3.91 | 199004170_ATL_HOU |
| San Francisco Giants | SFN | -3.62 | 199004180_LAN_SFN |
| California Angels | ANA | -2.34 | 199004180_OAK_ANA |
| Detroit Tigers | DET | -1.71 | 199004170_NYA_DET |
| Minnesota Twins | MIN | -1.02 | 199004170_MIN_SEA |
Based on accumulated WAA for this season up to 1990-04-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| XXXXX | 0.85 | Dennis Cook | 11.3 | PHI |
| XXXXX | 0.82 | Terry Leach | 9 | MIN |
| XXXXX | 0.8 | Rob Dibble | 9.3 | CIN |
| XXXXX | 0.72 | Dan Petry | 8 | DET |
| XXXXX | 0.63 | Duane Ward | 7 | TOR |
| XXXXX | 0.6 | Bob Tewksbury | 6.7 | SLN |
| XXXXX | 0.58 | Greg Harris | 11 | SDN |
| XXXXX | 0.57 | Gene Nelson | 6.7 | OAK |
| XXXXX | 0.55 | Greg Minton | 6.7 | ANA |
| XXXXX | 0.54 | Tim Crews | 6 | LAN |
| XXXXX | 0.53 | Mitch Williams | 6.3 | CHN |
| XXXXX | 0.48 | Dave Smith | 5.7 | HOU |
| XXXXX | 0.48 | Ray Searage | 5.3 | LAN |
| XXXXX | 0.48 | Cecilio Guante | 5 | CLE |
| XXXXX | 0.47 | Barry Jones | 5.3 | CHA |
| XXXXX | 0.47 | Ted Power | 5.3 | PIT |
| XXXXX | 0.46 | Steve Frey | 7.7 | WAS |
| XXXXX | 0.45 | Lee Guetterman | 5 | NYA |
| XXXXX | 0.44 | Bill Landrum | 5 | PIT |
| XXXXX | 0.44 | Dan Schatzeder | 7.7 | HOU |
| XXXXX | 0.43 | Dennis Eckersley | 5 | OAK |
| XXXXX | 0.43 | Gregg Olson | 4.7 | BAL |
| XXXXX | 0.43 | Paul Assenmacher | 7.7 | CHN |
| XXXXX | 0.42 | Ken Dayley | 4.7 | SLN |
| XXXXX | 0.41 | Larry Andersen | 7.3 | HOU |
_