| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 4.82 | 199007170_CLE_OAK |
| Cincinnati Reds | CIN | 2.15 | 199007180_WAS_CIN |
| Pittsburgh Pirates | PIT | 1.32 | 199007170_SFN_PIT |
| New York Mets | NYN | 1.24 | 199007170_NYN_HOU |
| Kansas City Royals | KCA | 1.16 | 199007170_KCA_NYA |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -5.23 | 199007180_PHI_ATL |
| Chicago Cubs | CHN | -4.86 | 199007170_SDN_CHN |
| St. Louis Cardinals | SLN | -1.47 | 199007170_LAN_SLN |
| California Angels | ANA | -1.38 | 199007170_MIL_ANA |
| San Diego Padres | SDN | -0.91 | 199007190_SDN_SLN |
Based on accumulated WAA for this season up to 1990-07-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +014+ | 3.94 | Jeff Brantley | 69.3 | SFN |
| +015+ | 3.92 | Mark Williamson | 62 | BAL |
| +024+ | 3.23 | Dennis Eckersley | 40.3 | OAK |
| +030+ | 3.08 | Gregg Olson | 48 | BAL |
| +031+ | 3.04 | Doug Jones | 49 | CLE |
| +043+ | 2.61 | Bill Landrum | 47.3 | PIT |
| +047+ | 2.44 | Bobby Thigpen | 50.7 | CHA |
| +048+ | 2.39 | Gene Nelson | 40.3 | OAK |
| +049+ | 2.37 | Steve Farr | 62.3 | KCA |
| +050+ | 2.34 | Tom Henke | 44.3 | TOR |
| +054+ | 2.29 | Randy Myers | 51.3 | CIN |
| +057+ | 2.25 | Lee Smith | 54.7 | TOT |
| +060+ | 2.18 | Mark Eichhorn | 59.3 | ANA |
| +064+ | 2.09 | Jeff Montgomery | 57 | KCA |
| +067+ | 2.02 | Rob Dibble | 53 | CIN |
| +070+ | 1.91 | Greg Harris | 68 | SDN |
| +076+ | 1.82 | Paul Gibson | 61.3 | DET |
| +077+ | 1.81 | Keith Comstock | 33.7 | SEA |
| +079+ | 1.74 | Terry Leach | 53.3 | MIN |
| +082+ | 1.71 | Larry Andersen | 53.3 | HOU |
| +084+ | 1.7 | Mike Schooler | 41.7 | SEA |
| +086+ | 1.66 | Bill Sampen | 55.3 | WAS |
| +088+ | 1.63 | John Franco | 41 | NYN |
| +089+ | 1.6 | Barry Jones | 48.3 | CHA |
| +094+ | 1.54 | Darrel Akerfelds | 53.7 | PHI |
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