| Team | Tm | Tier | Game |
|---|---|---|---|
| Boston Red Sox | BOS | 2.82 | 199004260_ANA_BOS |
| Houston Astros | HOU | 2.48 | 199004260_HOU_ATL |
| New York Mets | NYN | 2.41 | 199004250_ATL_NYN |
| Cincinnati Reds | CIN | 2.4 | 199004250_CIN_PHI |
| Oakland Athletics | OAK | 1.44 | 199004260_OAK_BAL |
| Team | Tm | Tier | Game |
|---|---|---|---|
| California Angels | ANA | -5.74 | 199004250_ANA_BOS |
| San Francisco Giants | SFN | -5.37 | 199004260_PIT_SFN |
| Atlanta Braves | ATL | -2.76 | 199004260_HOU_ATL |
| Detroit Tigers | DET | -1.65 | 199004250_DET_MIN |
| Baltimore Orioles | BAL | -0.78 | 199004250_OAK_BAL |
Based on accumulated WAA for this season up to 1990-04-27.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +011+ | 1.41 | Duane Ward | 15.7 | TOR |
| +016+ | 1.28 | Paul Assenmacher | 16.7 | CHN |
| XXXXX | 1.05 | Rob Dibble | 12 | CIN |
| XXXXX | 0.99 | Terry Leach | 11 | MIN |
| XXXXX | 0.95 | Ted Power | 10.7 | PIT |
| XXXXX | 0.92 | Mitch Williams | 10.3 | CHN |
| XXXXX | 0.86 | Mark Eichhorn | 14.7 | ANA |
| XXXXX | 0.84 | Gregg Olson | 9.7 | BAL |
| XXXXX | 0.8 | Dan Petry | 13.7 | DET |
| XXXXX | 0.74 | Greg Harris | 13 | SDN |
| XXXXX | 0.73 | Dennis Eckersley | 8.7 | OAK |
| XXXXX | 0.68 | Tim Crews | 10 | LAN |
| XXXXX | 0.65 | Bill Swift | 12 | SEA |
| XXXXX | 0.65 | Jeff Reardon | 7.3 | BOS |
| XXXXX | 0.64 | Dave Smith | 9.7 | HOU |
| XXXXX | 0.62 | Ken Dayley | 7 | SLN |
| XXXXX | 0.62 | Doug Jones | 6.7 | CLE |
| XXXXX | 0.59 | Mike Henneman | 11.3 | DET |
| XXXXX | 0.57 | Bobby Ojeda | 9 | NYN |
| XXXXX | 0.57 | Dave Wells | 8.7 | TOR |
| XXXXX | 0.56 | Bill Landrum | 8.7 | PIT |
| XXXXX | 0.56 | Bob Patterson | 8.7 | PIT |
| XXXXX | 0.55 | Scott Radinsky | 6 | CHA |
| XXXXX | 0.55 | Larry Andersen | 8.7 | HOU |
| XXXXX | 0.55 | Juan Agosto | 8.7 | HOU |
_