| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 4.83 | 199006230_CHA_OAK |
| Houston Astros | HOU | 2.79 | 199006250_SDN_HOU |
| Cincinnati Reds | CIN | 1.74 | 199006240_LAN_CIN |
| Chicago White Sox | CHA | 1.64 | 199006240_CHA_OAK |
| Baltimore Orioles | BAL | 1.52 | 199006230_BAL_BOS |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -5.05 | 199006250_LAN_ATL |
| Chicago Cubs | CHN | -3.93 | 199006230_SLN_CHN |
| Boston Red Sox | BOS | -1.64 | 199006240_BAL_BOS |
| St. Louis Cardinals | SLN | -1.51 | 199006230_SLN_CHN |
| San Francisco Giants | SFN | -0.96 | 199006230_SFN_HOU |
Based on accumulated WAA for this season up to 1990-06-25.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +014+ | 3.44 | Mark Eichhorn | 54 | ANA |
| +025+ | 2.96 | Jeff Brantley | 55.7 | SFN |
| +030+ | 2.68 | Mark Williamson | 47.7 | BAL |
| +032+ | 2.55 | Greg Harris | 53.3 | SDN |
| +036+ | 2.51 | Gregg Olson | 39 | BAL |
| +035+ | 2.51 | Dennis Eckersley | 32.3 | OAK |
| +040+ | 2.31 | Bill Sampen | 43.7 | WAS |
| +042+ | 2.27 | Doug Jones | 38 | CLE |
| +044+ | 2.25 | Larry Andersen | 40.7 | HOU |
| +045+ | 2.23 | Bill Swift | 47 | SEA |
| +051+ | 2.12 | Edwin Nunez | 45.7 | DET |
| +055+ | 1.96 | Barry Jones | 35.3 | CHA |
| +057+ | 1.93 | Rob Dibble | 40 | CIN |
| +060+ | 1.83 | Jeff Montgomery | 45 | KCA |
| +063+ | 1.82 | Paul Gibson | 44.7 | DET |
| +065+ | 1.81 | Juan Agosto | 45 | HOU |
| +068+ | 1.79 | Tom Henke | 36 | TOR |
| +069+ | 1.78 | Bill Landrum | 35 | PIT |
| +073+ | 1.73 | Rick Aguilera | 32 | MIN |
| +074+ | 1.72 | Bobby Thigpen | 37.3 | CHA |
| +077+ | 1.69 | Lee Guetterman | 45.7 | NYA |
| +078+ | 1.67 | Gene Nelson | 32.3 | OAK |
| +083+ | 1.62 | Danny Darwin | 43 | HOU |
| +084+ | 1.59 | Steve Farr | 44.7 | KCA |
| +086+ | 1.55 | Lee Smith | 44.3 | TOT |
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