| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 4.8 | 199007200_TOR_OAK |
| Baltimore Orioles | BAL | 2.76 | 199007200_CHA_BAL |
| Cincinnati Reds | CIN | 2.15 | 199007180_WAS_CIN |
| Pittsburgh Pirates | PIT | 1.28 | 199007180_SFN_PIT |
| New York Mets | NYN | 1.2 | 199007180_NYN_HOU |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -5.23 | 199007180_PHI_ATL |
| Chicago Cubs | CHN | -4.34 | 199007180_SDN_CHN |
| St. Louis Cardinals | SLN | -1.41 | 199007190_SDN_SLN |
| California Angels | ANA | -1.16 | 199007180_MIL_ANA |
| San Diego Padres | SDN | -0.91 | 199007190_SDN_SLN |
Based on accumulated WAA for this season up to 1990-07-20.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +012+ | 4.18 | Mark Williamson | 65 | BAL |
| +018+ | 3.61 | Jeff Brantley | 70.3 | SFN |
| +025+ | 3.23 | Dennis Eckersley | 40.3 | OAK |
| +029+ | 3.07 | Gregg Olson | 48 | BAL |
| +031+ | 3.04 | Doug Jones | 49 | CLE |
| +043+ | 2.61 | Bill Landrum | 47.3 | PIT |
| +047+ | 2.43 | Lee Smith | 56.7 | TOT |
| +048+ | 2.39 | Gene Nelson | 40.3 | OAK |
| +049+ | 2.37 | Steve Farr | 62.3 | KCA |
| +054+ | 2.29 | Rob Dibble | 56 | CIN |
| +053+ | 2.29 | Randy Myers | 51.3 | CIN |
| +055+ | 2.28 | Bobby Thigpen | 51.3 | CHA |
| +058+ | 2.22 | Tom Henke | 45.3 | TOR |
| +060+ | 2.18 | Mark Eichhorn | 59.3 | ANA |
| +065+ | 2.09 | Jeff Montgomery | 57 | KCA |
| +069+ | 2 | Greg Harris | 69 | SDN |
| +074+ | 1.9 | Keith Comstock | 34.7 | SEA |
| +078+ | 1.82 | Paul Gibson | 61.3 | DET |
| +079+ | 1.79 | Mike Schooler | 42.7 | SEA |
| +081+ | 1.77 | Barry Jones | 50.3 | CHA |
| +085+ | 1.73 | Terry Leach | 53.3 | MIN |
| +087+ | 1.71 | Larry Andersen | 53.3 | HOU |
| +088+ | 1.66 | Bill Sampen | 55.3 | WAS |
| +091+ | 1.63 | John Franco | 41 | NYN |
| +096+ | 1.55 | Darrel Akerfelds | 53.7 | PHI |
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