| Team | Tm | Tier | Game |
|---|---|---|---|
| New York Mets | NYN | 3.99 | 199005070_HOU_NYN |
| Houston Astros | HOU | 2.9 | 199005061_HOU_NYN |
| Oakland Athletics | OAK | 2.83 | 199005070_NYA_OAK |
| Cincinnati Reds | CIN | 2.35 | 199005070_CIN_SLN |
| Toronto Blue Jays | TOR | 0.71 | 199005060_DET_TOR |
| Team | Tm | Tier | Game |
|---|---|---|---|
| San Francisco Giants | SFN | -4.45 | 199005070_SFN_WAS |
| California Angels | ANA | -2.65 | 199005060_NYA_ANA |
| Atlanta Braves | ATL | -1.44 | 199005061_ATL_PIT |
| Detroit Tigers | DET | -1.28 | 199005070_DET_MIL |
| Seattle Mariners | SEA | -0.86 | 199005060_BAL_SEA |
Based on accumulated WAA for this season up to 1990-05-07.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +021+ | 1.48 | Rob Dibble | 16.7 | CIN |
| +024+ | 1.44 | Paul Assenmacher | 23 | CHN |
| +026+ | 1.4 | Juan Agosto | 18.3 | HOU |
| +028+ | 1.34 | Duane Ward | 19.3 | TOR |
| +032+ | 1.3 | Terry Leach | 14.3 | MIN |
| +033+ | 1.29 | Mark Eichhorn | 21.7 | ANA |
| XXXXX | 1.22 | Doug Jones | 13.3 | CLE |
| XXXXX | 1.22 | Gregg Olson | 16.3 | BAL |
| XXXXX | 1.17 | Ted Power | 13 | PIT |
| XXXXX | 1.15 | Greg Harris | 19.7 | SDN |
| XXXXX | 1.12 | Don Carman | 14.7 | PHI |
| XXXXX | 1.07 | Dennis Eckersley | 12.3 | OAK |
| XXXXX | 1.02 | Mitch Williams | 16 | CHN |
| XXXXX | 0.99 | Jeff Montgomery | 23 | KCA |
| XXXXX | 0.99 | Bobby Ojeda | 16 | NYN |
| XXXXX | 0.93 | Jeff Reardon | 10.3 | BOS |
| XXXXX | 0.93 | Bill Landrum | 12.7 | PIT |
| XXXXX | 0.92 | Larry Andersen | 15.3 | HOU |
| XXXXX | 0.85 | Scott Radinsky | 9.7 | CHA |
| XXXXX | 0.84 | Ken Dayley | 9.3 | SLN |
| XXXXX | 0.83 | Dan Schatzeder | 16.7 | HOU |
| XXXXX | 0.82 | Kevin Appier | 11.7 | KCA |
| XXXXX | 0.81 | Danny Darwin | 14 | HOU |
| XXXXX | 0.79 | Barry Jones | 11.3 | CHA |
| XXXXX | 0.78 | Mike Witt | 18.3 | ANA |
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