| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 4.72 | 199007270_OAK_MIN |
| Cincinnati Reds | CIN | 1.9 | 199007251_CIN_SDN |
| New York Mets | NYN | 1.37 | 199007250_NYN_PHI |
| Pittsburgh Pirates | PIT | 1.34 | 199007250_PIT_WAS |
| Kansas City Royals | KCA | 0.98 | 199007270_BAL_KCA |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -6.85 | 199007250_HOU_ATL |
| Chicago Cubs | CHN | -3.54 | 199007250_CHN_SLN |
| California Angels | ANA | -1.72 | 199007250_ANA_OAK |
| Montreal Expos | WAS | -0.91 | 199007260_CHN_WAS |
| Boston Red Sox | BOS | -0.87 | 199007270_BOS_DET |
Based on accumulated WAA for this season up to 1990-07-27.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +017+ | 3.98 | Mark Williamson | 67.3 | BAL |
| +020+ | 3.81 | Jeff Brantley | 72.3 | SFN |
| +031+ | 3.17 | Gregg Olson | 49 | BAL |
| +032+ | 3.14 | Doug Jones | 50 | CLE |
| +035+ | 3.04 | Dennis Eckersley | 43 | OAK |
| +048+ | 2.73 | Steve Farr | 66.7 | KCA |
| +049+ | 2.72 | Lee Smith | 59.7 | TOT |
| +051+ | 2.58 | Rob Dibble | 59 | CIN |
| +056+ | 2.49 | Randy Myers | 53.3 | CIN |
| +059+ | 2.44 | Gene Nelson | 43.3 | OAK |
| +062+ | 2.37 | Bill Landrum | 49.3 | PIT |
| +065+ | 2.26 | Bobby Thigpen | 53.3 | CHA |
| +066+ | 2.21 | Jeff Montgomery | 61 | KCA |
| +073+ | 2.02 | Tom Henke | 50.3 | TOR |
| +072+ | 2.02 | Barry Jones | 53 | CHA |
| +075+ | 1.99 | John Franco | 45 | NYN |
| +078+ | 1.96 | Keith Comstock | 35.3 | SEA |
| +079+ | 1.96 | Greg Harris | 75.3 | SDN |
| +082+ | 1.94 | Darrel Akerfelds | 60.3 | PHI |
| +087+ | 1.88 | Terry Leach | 57.3 | MIN |
| +088+ | 1.87 | Larry Andersen | 55 | HOU |
| +089+ | 1.85 | Paul Gibson | 64 | DET |
| +091+ | 1.82 | Mike Schooler | 45.3 | SEA |
| +099+ | 1.68 | Brad Arnsberg | 30 | TEX |
| +104+ | 1.6 | Tim Crews | 63.7 | LAN |
_