| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 5.8 | 199009120_OAK_SEA |
| Detroit Tigers | DET | 1.94 | 199009140_NYA_DET |
| Pittsburgh Pirates | PIT | 1.44 | 199009120_PIT_NYN |
| Los Angeles Dodgers | LAN | 1.04 | 199009140_LAN_CIN |
| Cincinnati Reds | CIN | 1 | 199009120_HOU_CIN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Chicago Cubs | CHN | -9.57 | 199009120_PHI_CHN |
| New York Yankees | NYA | -4.21 | 199009120_TEX_NYA |
| Atlanta Braves | ATL | -2.88 | 199009120_ATL_SFN |
| Minnesota Twins | MIN | -1.9 | 199009140_MIN_OAK |
| Boston Red Sox | BOS | -1.05 | 199009130_BOS_CHA |
Based on accumulated WAA for this season up to 1990-09-14.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +020+ | 5.2 | John Tudor | 146.3 | SLN |
| +025+ | 4.74 | Bill Swift | 120 | SEA |
| +026+ | 4.69 | Dennis Eckersley | 64 | OAK |
| +034+ | 4.25 | Larry Andersen | 84.3 | TOT |
| +035+ | 4.09 | Rob Dibble | 88 | CIN |
| +036+ | 3.98 | Steve Farr | 105.7 | KCA |
| +043+ | 3.75 | Edwin Nunez | 75.7 | DET |
| +047+ | 3.51 | Bobby Thigpen | 78.7 | CHA |
| +049+ | 3.43 | Randy Myers | 78.3 | CIN |
| +055+ | 3.18 | Greg Harris | 104.3 | SDN |
| +057+ | 3.14 | Tom Henke | 65.3 | TOR |
| +060+ | 3.11 | Tim Crews | 92.3 | LAN |
| +061+ | 3.1 | Gene Nelson | 67.3 | OAK |
| +064+ | 3.05 | Jeff Montgomery | 84 | KCA |
| +065+ | 2.98 | Lee Smith | 79.7 | TOT |
| +067+ | 2.82 | Brad Arnsberg | 57 | TEX |
| +074+ | 2.61 | Jay Howell | 59 | LAN |
| +084+ | 2.43 | Bryan Harvey | 60 | ANA |
| +090+ | 2.36 | Gregg Olson | 68 | BAL |
| +092+ | 2.34 | Craig Lefferts | 73.7 | SDN |
| +095+ | 2.29 | Dave Smith | 58 | HOU |
| +096+ | 2.28 | John Franco | 62.3 | NYN |
| +097+ | 2.26 | Dan Schatzeder | 64.7 | TOT |
| +101+ | 2.22 | Barry Jones | 69 | CHA |
| +110+ | 2.05 | Doug Jones | 72.7 | CLE |
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