| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 3.98 | 199008110_NYA_OAK |
| Pittsburgh Pirates | PIT | 1.92 | 199008110_SLN_PIT |
| Cincinnati Reds | CIN | 1.59 | 199008110_SFN_CIN |
| Chicago White Sox | CHA | 1.52 | 199008110_TEX_CHA |
| Baltimore Orioles | BAL | 0.84 | 199008110_BAL_ANA |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -7.54 | 199008120_LAN_ATL |
| Boston Red Sox | BOS | -3.46 | 199008130_BOS_OAK |
| San Diego Padres | SDN | -1.77 | 199008110_SDN_HOU |
| Detroit Tigers | DET | -1.72 | 199008120_DET_CLE |
| Chicago Cubs | CHN | -1.34 | 199008110_CHN_NYN |
Based on accumulated WAA for this season up to 1990-08-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +020+ | 4.24 | Jeff Brantley | 76.3 | SFN |
| +024+ | 3.82 | Gregg Olson | 58 | BAL |
| +026+ | 3.72 | Dennis Eckersley | 50.3 | OAK |
| +027+ | 3.7 | Mark Williamson | 82 | BAL |
| +028+ | 3.67 | Doug Jones | 57.7 | CLE |
| +035+ | 3.29 | Steve Farr | 83.7 | KCA |
| +048+ | 2.94 | Randy Myers | 62.7 | CIN |
| +047+ | 2.94 | Rob Dibble | 69.7 | CIN |
| +049+ | 2.91 | Gene Nelson | 55.3 | OAK |
| +054+ | 2.81 | Lee Smith | 69.7 | TOT |
| +055+ | 2.77 | Greg Harris | 86.3 | SDN |
| +056+ | 2.7 | Jeff Montgomery | 70.3 | KCA |
| +058+ | 2.59 | Tom Henke | 56.3 | TOR |
| +060+ | 2.55 | Brad Arnsberg | 41.7 | TEX |
| +064+ | 2.48 | Larry Andersen | 61.3 | HOU |
| +067+ | 2.45 | John Franco | 52 | NYN |
| +071+ | 2.36 | Bill Landrum | 58.3 | PIT |
| +072+ | 2.35 | Bobby Thigpen | 60.7 | CHA |
| +075+ | 2.17 | Barry Jones | 58.7 | CHA |
| +081+ | 2.09 | Tim Crews | 73 | LAN |
| +091+ | 1.96 | Mike Schooler | 54 | SEA |
| +094+ | 1.95 | Craig Lefferts | 65.7 | SDN |
| +100+ | 1.84 | Keith Comstock | 43.3 | SEA |
| +101+ | 1.81 | Dennis Cook | 118 | PHI |
| +105+ | 1.78 | Zane Smith | 140.3 | TOT |
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