| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 2.57 | 199006270_DET_OAK |
| Houston Astros | HOU | 2.38 | 199006270_SDN_HOU |
| Kansas City Royals | KCA | 2.1 | 199006280_KCA_SEA |
| Cincinnati Reds | CIN | 2 | 199006290_CIN_NYN |
| Chicago White Sox | CHA | 1.95 | 199006270_CHA_ANA |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Chicago Cubs | CHN | -5.12 | 199006270_WAS_CHN |
| Atlanta Braves | ATL | -4.36 | 199006270_LAN_ATL |
| St. Louis Cardinals | SLN | -1.21 | 199006270_NYN_SLN |
| Milwaukee Brewers | MIL | -1.09 | 199006290_MIL_SEA |
| San Francisco Giants | SFN | -0.62 | 199006270_SFN_CIN |
Based on accumulated WAA for this season up to 1990-06-29.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +018+ | 3.3 | Jeff Brantley | 60 | SFN |
| +021+ | 3.08 | Mark Eichhorn | 55 | ANA |
| +026+ | 2.85 | Mark Williamson | 50 | BAL |
| +032+ | 2.59 | Dennis Eckersley | 33.3 | OAK |
| +033+ | 2.58 | Gregg Olson | 40 | BAL |
| +037+ | 2.44 | Larry Andersen | 43 | HOU |
| +039+ | 2.41 | Edwin Nunez | 49 | DET |
| +042+ | 2.34 | Greg Harris | 56 | SDN |
| +045+ | 2.29 | Bill Swift | 48 | SEA |
| +046+ | 2.26 | Rob Dibble | 44 | CIN |
| +048+ | 2.22 | Doug Jones | 40 | CLE |
| +051+ | 2.15 | Barry Jones | 37.7 | CHA |
| +056+ | 2.01 | Lee Guetterman | 49.3 | NYA |
| +057+ | 2 | Bill Sampen | 45 | WAS |
| +059+ | 1.95 | Bill Landrum | 37 | PIT |
| +061+ | 1.93 | Paul Gibson | 46 | DET |
| +065+ | 1.88 | Tom Henke | 37 | TOR |
| +064+ | 1.88 | Bobby Thigpen | 39.3 | CHA |
| +066+ | 1.87 | Juan Agosto | 46 | HOU |
| +067+ | 1.85 | Jeff Montgomery | 47.7 | KCA |
| +076+ | 1.7 | Mike Schooler | 34.7 | SEA |
| +078+ | 1.68 | Rick Aguilera | 34 | MIN |
| +079+ | 1.67 | Steve Farr | 45.7 | KCA |
| +082+ | 1.66 | Gene Nelson | 32.3 | OAK |
| +083+ | 1.62 | Craig Lefferts | 45.7 | SDN |
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