| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 4.8 | 199007200_TOR_OAK |
| Baltimore Orioles | BAL | 2.76 | 199007200_CHA_BAL |
| Cincinnati Reds | CIN | 1.98 | 199007220_PHI_CIN |
| Pittsburgh Pirates | PIT | 1.35 | 199007210_LAN_PIT |
| New York Mets | NYN | 1.1 | 199007220_ATL_NYN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -5.4 | 199007210_ATL_NYN |
| Chicago Cubs | CHN | -3.62 | 199007200_SFN_CHN |
| San Diego Padres | SDN | -1.79 | 199007220_SDN_SLN |
| St. Louis Cardinals | SLN | -1.26 | 199007200_SDN_SLN |
| California Angels | ANA | -1.21 | 199007210_CLE_ANA |
Based on accumulated WAA for this season up to 1990-07-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +013+ | 4.15 | Mark Williamson | 65 | BAL |
| +018+ | 3.59 | Jeff Brantley | 70.3 | SFN |
| +027+ | 3.21 | Dennis Eckersley | 40.3 | OAK |
| +030+ | 3.12 | Doug Jones | 50 | CLE |
| +032+ | 3.05 | Gregg Olson | 48 | BAL |
| +044+ | 2.57 | Lee Smith | 58.3 | TOT |
| +046+ | 2.46 | Steve Farr | 63.7 | KCA |
| +048+ | 2.37 | Gene Nelson | 40.3 | OAK |
| +050+ | 2.35 | Randy Myers | 52.3 | CIN |
| +052+ | 2.29 | Tom Henke | 46.3 | TOR |
| +054+ | 2.27 | Bobby Thigpen | 51.3 | CHA |
| +055+ | 2.26 | Rob Dibble | 56 | CIN |
| +056+ | 2.26 | Bill Landrum | 48.3 | PIT |
| +057+ | 2.24 | Jeff Montgomery | 59 | KCA |
| +068+ | 2.03 | Mark Eichhorn | 60.3 | ANA |
| +076+ | 1.89 | Paul Gibson | 62.3 | DET |
| +077+ | 1.89 | Keith Comstock | 34.7 | SEA |
| +075+ | 1.89 | Mike Schooler | 44 | SEA |
| +083+ | 1.76 | Barry Jones | 50.3 | CHA |
| +087+ | 1.74 | Terry Leach | 53.7 | MIN |
| +086+ | 1.74 | Larry Andersen | 54 | HOU |
| +089+ | 1.7 | John Franco | 42 | NYN |
| +090+ | 1.68 | Darrel Akerfelds | 55.3 | PHI |
| +091+ | 1.67 | Brad Arnsberg | 30 | TEX |
| +093+ | 1.65 | Bill Sampen | 55.3 | WAS |
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