| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 2.63 | 199007020_OAK_TOR |
| Houston Astros | HOU | 2.61 | 199007010_HOU_PHI |
| Cincinnati Reds | CIN | 2.36 | 199007010_CIN_NYN |
| Chicago White Sox | CHA | 2.04 | 199007020_DET_CHA |
| Baltimore Orioles | BAL | 1.38 | 199007010_BAL_MIN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -4.18 | 199006300_ATL_WAS |
| Chicago Cubs | CHN | -2.96 | 199006300_CHN_SDN |
| St. Louis Cardinals | SLN | -1.17 | 199007020_SLN_SFN |
| Milwaukee Brewers | MIL | -1.15 | 199007010_MIL_SEA |
| Philadelphia Phillies | PHI | -0.92 | 199007010_HOU_PHI |
Based on accumulated WAA for this season up to 1990-07-02.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +020+ | 3.35 | Jeff Brantley | 60.3 | SFN |
| +021+ | 3.2 | Mark Eichhorn | 56 | ANA |
| +024+ | 2.87 | Mark Williamson | 50 | BAL |
| +027+ | 2.78 | Dennis Eckersley | 35.3 | OAK |
| +029+ | 2.71 | Edwin Nunez | 52 | DET |
| +028+ | 2.71 | Greg Harris | 60.3 | SDN |
| +033+ | 2.52 | Rob Dibble | 46.7 | CIN |
| +034+ | 2.5 | Gregg Olson | 41.3 | BAL |
| +037+ | 2.48 | Doug Jones | 42.7 | CLE |
| +043+ | 2.28 | Bill Swift | 48 | SEA |
| +048+ | 2.19 | Bill Sampen | 47 | WAS |
| +051+ | 2.13 | Paul Gibson | 48 | DET |
| +052+ | 2.11 | Bill Landrum | 39 | PIT |
| +055+ | 2.01 | Bobby Thigpen | 40.7 | CHA |
| +056+ | 2.01 | Lee Guetterman | 51.3 | NYA |
| +058+ | 1.98 | Tom Henke | 38 | TOR |
| +061+ | 1.93 | Danny Darwin | 51 | HOU |
| +062+ | 1.93 | Juan Agosto | 51 | HOU |
| +064+ | 1.87 | Rick Aguilera | 36 | MIN |
| +066+ | 1.87 | Steve Farr | 47.7 | KCA |
| +071+ | 1.75 | Jeff Montgomery | 48.7 | KCA |
| +074+ | 1.7 | Gene Nelson | 32.7 | OAK |
| +077+ | 1.64 | Mike Schooler | 36.3 | SEA |
| +079+ | 1.62 | Barry Jones | 38.7 | CHA |
| +081+ | 1.6 | Lee Smith | 47.3 | TOT |
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