| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 5.9 | 199007110_OAK_MIN |
| Cincinnati Reds | CIN | 2.88 | 199007121_NYN_CIN |
| Chicago White Sox | CHA | 1.29 | 199007110_MIL_CHA |
| New York Mets | NYN | 1.14 | 199007130_NYN_CIN |
| Baltimore Orioles | BAL | 0.8 | 199007131_MIN_BAL |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -4.43 | 199007120_WAS_ATL |
| Chicago Cubs | CHN | -4.2 | 199007120_LAN_CHN |
| St. Louis Cardinals | SLN | -1.37 | 199007120_SFN_SLN |
| California Angels | ANA | -1.06 | 199007110_ANA_SEA |
| New York Yankees | NYA | -0.75 | 199007120_CHA_NYA |
Based on accumulated WAA for this season up to 1990-07-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +015+ | 3.77 | Jeff Brantley | 67.3 | SFN |
| +017+ | 3.54 | Mark Williamson | 57.3 | BAL |
| +024+ | 2.98 | Dennis Eckersley | 37.3 | OAK |
| +025+ | 2.96 | Gregg Olson | 46.3 | BAL |
| +030+ | 2.83 | Edwin Nunez | 56 | DET |
| +032+ | 2.74 | Doug Jones | 45.7 | CLE |
| +037+ | 2.58 | Bill Landrum | 44.3 | PIT |
| +042+ | 2.44 | Greg Harris | 64.7 | SDN |
| +045+ | 2.34 | Tom Henke | 42 | TOR |
| +048+ | 2.32 | Gene Nelson | 39.3 | OAK |
| +049+ | 2.31 | Bill Sampen | 48.3 | WAS |
| +052+ | 2.19 | Bobby Thigpen | 47.7 | CHA |
| +053+ | 2.18 | Mark Eichhorn | 59 | ANA |
| +055+ | 2.11 | Steve Farr | 59.3 | KCA |
| +056+ | 2.1 | Bill Swift | 55 | SEA |
| +062+ | 1.99 | Randy Myers | 47.7 | CIN |
| +063+ | 1.98 | Lee Smith | 51.3 | TOT |
| +071+ | 1.88 | Terry Leach | 52.3 | MIN |
| +072+ | 1.87 | Rob Dibble | 48.7 | CIN |
| +074+ | 1.83 | Jeff Montgomery | 54 | KCA |
| +075+ | 1.82 | Dennis Lamp | 58.7 | BOS |
| +080+ | 1.72 | Mike Henneman | 53 | DET |
| +082+ | 1.71 | Darrel Akerfelds | 50.7 | PHI |
| +085+ | 1.7 | John Franco | 37 | NYN |
| +090+ | 1.59 | Mike Schooler | 40.3 | SEA |
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