| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 6.79 | 199006060_OAK_TEX |
| Chicago White Sox | CHA | 2.52 | 199006050_SEA_CHA |
| Cincinnati Reds | CIN | 2.05 | 199006050_CIN_SFN |
| New York Mets | NYN | 1.81 | 199006040_WAS_NYN |
| Cleveland Indians | CLE | 0.97 | 199006060_DET_CLE |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -2.92 | 199006060_ATL_LAN |
| Chicago Cubs | CHN | -1.93 | 199006060_CHN_PIT |
| Philadelphia Phillies | PHI | -1.78 | 199006060_PHI_SLN |
| Montreal Expos | WAS | -1.51 | 199006060_WAS_NYN |
| California Angels | ANA | -1.39 | 199006040_ANA_TEX |
Based on accumulated WAA for this season up to 1990-06-06.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +011+ | 2.79 | Gregg Olson | 33 | BAL |
| +018+ | 2.63 | Mark Eichhorn | 43.3 | ANA |
| +021+ | 2.36 | Jeff Brantley | 42.7 | SFN |
| +037+ | 1.9 | Greg Harris | 41.3 | SDN |
| +039+ | 1.84 | Bill Landrum | 27 | PIT |
| +042+ | 1.82 | Dennis Eckersley | 25 | OAK |
| +048+ | 1.7 | Doug Jones | 29.7 | CLE |
| +050+ | 1.62 | Mark Williamson | 34 | BAL |
| +051+ | 1.62 | Larry Andersen | 32 | HOU |
| +054+ | 1.59 | Mike Schooler | 26.7 | SEA |
| +056+ | 1.58 | Jeff Montgomery | 38.3 | KCA |
| +057+ | 1.57 | Wayne Edwards | 26.7 | CHA |
| +058+ | 1.56 | Rob Dibble | 29.3 | CIN |
| +066+ | 1.39 | Barry Jones | 24.7 | CHA |
| +067+ | 1.36 | Bill Sampen | 29 | WAS |
| +071+ | 1.35 | Rick Aguilera | 26 | MIN |
| +069+ | 1.35 | Paul Gibson | 35.3 | DET |
| +073+ | 1.34 | Gene Nelson | 26.7 | OAK |
| +074+ | 1.34 | Craig Lefferts | 26 | SDN |
| +076+ | 1.33 | Dennis Lamp | 39.7 | BOS |
| +079+ | 1.3 | Terry Leach | 32.3 | MIN |
| +082+ | 1.28 | Steve Farr | 32.7 | KCA |
| +085+ | 1.27 | Bill Swift | 34.7 | SEA |
| +087+ | 1.26 | Edwin Nunez | 34.3 | DET |
| +086+ | 1.26 | Juan Agosto | 35 | HOU |
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