| Team | Tm | Tier | Game |
|---|---|---|---|
| New York Mets | NYN | 5 | 199005010_NYN_ATL |
| Houston Astros | HOU | 3.39 | 199005020_HOU_PHI |
| Oakland Athletics | OAK | 2.31 | 199005020_OAK_NYA |
| Cincinnati Reds | CIN | 1.47 | 199005010_PHI_CIN |
| Cleveland Indians | CLE | 1.12 | 199005030_CLE_NYA |
| Team | Tm | Tier | Game |
|---|---|---|---|
| California Angels | ANA | -4.07 | 199005010_ANA_BAL |
| San Francisco Giants | SFN | -3.02 | 199005020_CHN_SFN |
| Atlanta Braves | ATL | -2.49 | 199005020_ATL_WAS |
| St. Louis Cardinals | SLN | -1.26 | 199005010_SLN_SDN |
| Detroit Tigers | DET | -1.1 | 199005010_MIN_DET |
Based on accumulated WAA for this season up to 1990-05-03.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +020+ | 1.26 | Mark Eichhorn | 19.3 | ANA |
| XXXXX | 1.2 | Paul Assenmacher | 20.7 | CHN |
| XXXXX | 1.19 | Rob Dibble | 13.7 | CIN |
| XXXXX | 1.19 | Terry Leach | 13.3 | MIN |
| XXXXX | 1.15 | Mitch Williams | 13 | CHN |
| XXXXX | 1.11 | Duane Ward | 17 | TOR |
| XXXXX | 1.05 | Gregg Olson | 12.3 | BAL |
| XXXXX | 1.04 | Ted Power | 11.7 | PIT |
| XXXXX | 1.03 | Doug Jones | 11.3 | CLE |
| XXXXX | 1.02 | Juan Agosto | 14.3 | HOU |
| XXXXX | 0.99 | Greg Harris | 16 | SDN |
| XXXXX | 0.96 | Dennis Eckersley | 11.3 | OAK |
| XXXXX | 0.81 | Dan Schatzeder | 14.3 | HOU |
| XXXXX | 0.81 | Bill Sampen | 9.3 | WAS |
| XXXXX | 0.78 | Dave Smith | 14 | HOU |
| XXXXX | 0.77 | Bill Landrum | 11 | PIT |
| XXXXX | 0.74 | Ken Dayley | 8.3 | SLN |
| XXXXX | 0.74 | Bob Patterson | 10.7 | PIT |
| XXXXX | 0.73 | Mark Williamson | 8.7 | BAL |
| XXXXX | 0.73 | Jeff Reardon | 8.3 | BOS |
| XXXXX | 0.72 | Dave Wells | 10.3 | TOR |
| XXXXX | 0.71 | Bobby Ojeda | 13 | NYN |
| XXXXX | 0.69 | Barry Jones | 10.3 | CHA |
| XXXXX | 0.67 | Scott Radinsky | 7.7 | CHA |
| XXXXX | 0.66 | Wayne Edwards | 10 | CHA |
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