| Team | Tm | Tier | Game |
|---|---|---|---|
| New York Mets | NYN | 4.52 | 199004170_CHN_NYN |
| Kansas City Royals | KCA | 3.56 | 199004170_CLE_KCA |
| Cincinnati Reds | CIN | 2.23 | 199004160_CIN_ATL |
| Oakland Athletics | OAK | 1.76 | 199004150_OAK_SEA |
| Boston Red Sox | BOS | 0.85 | 199004160_MIL_BOS |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -3.91 | 199004170_ATL_HOU |
| California Angels | ANA | -3.28 | 199004150_MIN_ANA |
| Detroit Tigers | DET | -2.07 | 199004150_BAL_DET |
| San Francisco Giants | SFN | -1.67 | 199004170_LAN_SFN |
| Minnesota Twins | MIN | -1.02 | 199004170_MIN_SEA |
Based on accumulated WAA for this season up to 1990-04-17.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| XXXXX | 0.82 | Dennis Cook | 11.3 | PHI |
| XXXXX | 0.78 | Greg Harris | 9 | SDN |
| XXXXX | 0.67 | Dan Petry | 7.7 | DET |
| XXXXX | 0.62 | Duane Ward | 7 | TOR |
| XXXXX | 0.59 | Terry Leach | 6.7 | MIN |
| XXXXX | 0.58 | Bob Tewksbury | 6.7 | SLN |
| XXXXX | 0.58 | Rob Dibble | 7 | CIN |
| XXXXX | 0.53 | Greg Minton | 6.7 | ANA |
| XXXXX | 0.51 | Mitch Williams | 6.3 | CHN |
| XXXXX | 0.47 | Ray Searage | 5.3 | LAN |
| XXXXX | 0.46 | Dave Smith | 5.7 | HOU |
| XXXXX | 0.46 | Barry Jones | 5.3 | CHA |
| XXXXX | 0.46 | Cecilio Guante | 5 | CLE |
| XXXXX | 0.46 | Ted Power | 5.3 | PIT |
| XXXXX | 0.44 | Steve Frey | 7.7 | WAS |
| XXXXX | 0.43 | Lee Guetterman | 5 | NYA |
| XXXXX | 0.41 | Dennis Eckersley | 5 | OAK |
| XXXXX | 0.41 | Julio Machado | 5 | NYN |
| XXXXX | 0.41 | Paul Assenmacher | 7.7 | CHN |
| XXXXX | 0.39 | Larry Andersen | 7.3 | HOU |
| XXXXX | 0.38 | Dave Wells | 6.7 | TOR |
| XXXXX | 0.36 | Eric Gunderson | 6.7 | SFN |
| XXXXX | 0.35 | Mike Schooler | 4 | SEA |
| XXXXX | 0.35 | Tim Crews | 4 | LAN |
| XXXXX | 0.35 | Tom Henke | 4 | TOR |
_