| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 5.08 | 199007160_CLE_OAK |
| Cincinnati Reds | CIN | 2.15 | 199007180_WAS_CIN |
| Pittsburgh Pirates | PIT | 1.48 | 199007160_SFN_PIT |
| Baltimore Orioles | BAL | 1.37 | 199007160_TEX_BAL |
| New York Mets | NYN | 1.29 | 199007160_NYN_HOU |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -5.23 | 199007180_PHI_ATL |
| Chicago Cubs | CHN | -4.86 | 199007170_SDN_CHN |
| St. Louis Cardinals | SLN | -1.68 | 199007160_LAN_SLN |
| California Angels | ANA | -1.38 | 199007170_MIL_ANA |
| San Diego Padres | SDN | -0.83 | 199007170_SDN_CHN |
Based on accumulated WAA for this season up to 1990-07-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +014+ | 3.95 | Jeff Brantley | 69.3 | SFN |
| +015+ | 3.94 | Mark Williamson | 62 | BAL |
| +025+ | 3.24 | Dennis Eckersley | 40.3 | OAK |
| +030+ | 3.06 | Gregg Olson | 47.7 | BAL |
| +031+ | 3.06 | Doug Jones | 49 | CLE |
| +042+ | 2.63 | Bill Landrum | 47.3 | PIT |
| +047+ | 2.44 | Bobby Thigpen | 50.7 | CHA |
| +048+ | 2.4 | Gene Nelson | 40.3 | OAK |
| +049+ | 2.39 | Steve Farr | 62.3 | KCA |
| +052+ | 2.35 | Tom Henke | 44.3 | TOR |
| +054+ | 2.3 | Randy Myers | 51.3 | CIN |
| +056+ | 2.27 | Lee Smith | 54.7 | TOT |
| +059+ | 2.2 | Mark Eichhorn | 59.3 | ANA |
| +062+ | 2.11 | Jeff Montgomery | 57 | KCA |
| +066+ | 2.03 | Rob Dibble | 53 | CIN |
| +072+ | 1.91 | Greg Harris | 68 | SDN |
| +076+ | 1.84 | Paul Gibson | 61.3 | DET |
| +077+ | 1.81 | Keith Comstock | 33.7 | SEA |
| +080+ | 1.75 | Terry Leach | 53.3 | MIN |
| +082+ | 1.71 | Bill Sampen | 53.3 | WAS |
| +083+ | 1.7 | Mike Schooler | 41.7 | SEA |
| +087+ | 1.6 | Barry Jones | 48.3 | CHA |
| +088+ | 1.6 | Juan Agosto | 58.7 | HOU |
| +090+ | 1.56 | Darrel Akerfelds | 53.7 | PHI |
| +092+ | 1.55 | Larry Andersen | 51.3 | HOU |
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