| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 4.65 | 199007260_ANA_OAK |
| Cincinnati Reds | CIN | 2.02 | 199007240_CIN_SDN |
| Baltimore Orioles | BAL | 1.39 | 199007240_BAL_DET |
| New York Mets | NYN | 1.37 | 199007250_NYN_PHI |
| Pittsburgh Pirates | PIT | 1.34 | 199007250_PIT_WAS |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -6.85 | 199007241_HOU_ATL |
| Chicago Cubs | CHN | -3.54 | 199007250_CHN_SLN |
| California Angels | ANA | -1.72 | 199007250_ANA_OAK |
| Montreal Expos | WAS | -0.99 | 199007240_PIT_WAS |
| St. Louis Cardinals | SLN | -0.76 | 199007240_CHN_SLN |
Based on accumulated WAA for this season up to 1990-07-26.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +016+ | 3.99 | Mark Williamson | 67.3 | BAL |
| +019+ | 3.82 | Jeff Brantley | 72.3 | SFN |
| +031+ | 3.17 | Gregg Olson | 49 | BAL |
| +032+ | 3.15 | Doug Jones | 50 | CLE |
| +036+ | 3.04 | Dennis Eckersley | 43 | OAK |
| +045+ | 2.74 | Steve Farr | 66.7 | KCA |
| +046+ | 2.73 | Lee Smith | 59.7 | TOT |
| +049+ | 2.59 | Rob Dibble | 59 | CIN |
| +055+ | 2.5 | Randy Myers | 53.3 | CIN |
| +058+ | 2.44 | Gene Nelson | 43.3 | OAK |
| +061+ | 2.39 | Bobby Thigpen | 52.3 | CHA |
| +063+ | 2.38 | Bill Landrum | 49.3 | PIT |
| +066+ | 2.23 | Jeff Montgomery | 61 | KCA |
| +070+ | 2 | John Franco | 45 | NYN |
| +072+ | 1.97 | Keith Comstock | 35.3 | SEA |
| +074+ | 1.94 | Tom Henke | 49.3 | TOR |
| +077+ | 1.92 | Darrel Akerfelds | 57.7 | PHI |
| +082+ | 1.88 | Barry Jones | 51.3 | CHA |
| +083+ | 1.87 | Larry Andersen | 55 | HOU |
| +085+ | 1.86 | Terry Leach | 54.7 | MIN |
| +084+ | 1.86 | Paul Gibson | 64 | DET |
| +087+ | 1.83 | Mike Schooler | 45.3 | SEA |
| +093+ | 1.76 | Greg Harris | 73 | SDN |
| +096+ | 1.69 | Bill Sampen | 58 | WAS |
| +097+ | 1.68 | Brad Arnsberg | 30 | TEX |
_