| Team | Tm | Tier | Game |
|---|---|---|---|
| New York Mets | NYN | 5 | 199005010_NYN_ATL |
| Houston Astros | HOU | 3.05 | 199005010_HOU_WAS |
| Oakland Athletics | OAK | 2.18 | 199005010_OAK_NYA |
| Cincinnati Reds | CIN | 1.75 | 199004290_WAS_CIN |
| Boston Red Sox | BOS | 0.94 | 199004300_SEA_BOS |
| Team | Tm | Tier | Game |
|---|---|---|---|
| San Francisco Giants | SFN | -4.55 | 199004290_SLN_SFN |
| California Angels | ANA | -4.35 | 199004290_ANA_NYA |
| Atlanta Braves | ATL | -2 | 199005010_NYN_ATL |
| Detroit Tigers | DET | -1.45 | 199004300_MIL_DET |
| St. Louis Cardinals | SLN | -1.34 | 199004290_SLN_SFN |
Based on accumulated WAA for this season up to 1990-05-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +021+ | 1.29 | Paul Assenmacher | 17 | CHN |
| XXXXX | 1.19 | Rob Dibble | 13.7 | CIN |
| XXXXX | 1.15 | Mitch Williams | 13 | CHN |
| XXXXX | 1.11 | Terry Leach | 12.3 | MIN |
| XXXXX | 1.1 | Duane Ward | 17 | TOR |
| XXXXX | 1.07 | Mark Eichhorn | 17.3 | ANA |
| XXXXX | 1.04 | Gregg Olson | 12.3 | BAL |
| XXXXX | 1.03 | Ted Power | 11.7 | PIT |
| XXXXX | 0.99 | Greg Harris | 16 | SDN |
| XXXXX | 0.95 | Dennis Eckersley | 11.3 | OAK |
| XXXXX | 0.92 | Juan Agosto | 13.3 | HOU |
| XXXXX | 0.84 | Dave Smith | 12.3 | HOU |
| XXXXX | 0.81 | Bill Sampen | 9.3 | WAS |
| XXXXX | 0.79 | Doug Jones | 8.7 | CLE |
| XXXXX | 0.76 | Mike Henneman | 13.3 | DET |
| XXXXX | 0.74 | Ken Dayley | 8.3 | SLN |
| XXXXX | 0.73 | Jeff Reardon | 8.3 | BOS |
| XXXXX | 0.73 | Bob Patterson | 10.7 | PIT |
| XXXXX | 0.71 | Bobby Ojeda | 13 | NYN |
| XXXXX | 0.71 | Dan Schatzeder | 13.3 | HOU |
| XXXXX | 0.7 | Bill Landrum | 10.3 | PIT |
| XXXXX | 0.69 | Barry Jones | 10.3 | CHA |
| XXXXX | 0.67 | Scott Radinsky | 7.7 | CHA |
| XXXXX | 0.66 | Wayne Edwards | 10 | CHA |
| XXXXX | 0.66 | Dave Wells | 9.7 | TOR |
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