| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 2.97 | 198909180_OAK_CLE |
| Toronto Blue Jays | TOR | 2.42 | 198909180_BOS_TOR |
| California Angels | ANA | 2.14 | 198909180_ANA_MIN |
| Boston Red Sox | BOS | 1.1 | 198909170_OAK_BOS |
| Los Angeles Dodgers | LAN | 1.02 | 198909170_ATL_LAN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Chicago White Sox | CHA | -7.07 | 198909160_ANA_CHA |
| Baltimore Orioles | BAL | -5.84 | 198909170_KCA_BAL |
| Minnesota Twins | MIN | -3.7 | 198909180_ANA_MIN |
| Atlanta Braves | ATL | -1.66 | 198909160_ATL_LAN |
| Kansas City Royals | KCA | -0.89 | 198909170_KCA_BAL |
Based on accumulated WAA for this season up to 1989-09-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +027+ | 4.69 | Jeff Montgomery | 88 | KCA |
| +033+ | 4.42 | Jay Howell | 77 | LAN |
| +036+ | 4.14 | Bill Landrum | 76.7 | PIT |
| +051+ | 3.74 | Larry Andersen | 81.3 | HOU |
| +050+ | 3.74 | Les Lancaster | 60.7 | CHN |
| +057+ | 3.35 | Roger McDowell | 84.3 | TOT |
| +058+ | 3.35 | Jim Acker | 117 | TOT |
| +059+ | 3.34 | Todd Burns | 91.7 | OAK |
| +060+ | 3.34 | Gregg Olson | 79.3 | BAL |
| +062+ | 3.28 | Danny Darwin | 115.7 | HOU |
| +065+ | 3.17 | Randy Myers | 80.3 | NYN |
| +067+ | 3.09 | Tom Henke | 80 | TOR |
| +068+ | 3.09 | Mark Davis | 82 | SDN |
| +074+ | 3.01 | Lee Guetterman | 94.3 | NYA |
| +073+ | 3.01 | Rob Dibble | 91.3 | CIN |
| +081+ | 2.81 | Jesse Orosco | 71 | CLE |
| +085+ | 2.72 | Dennis Eckersley | 50.7 | OAK |
| +087+ | 2.65 | Dennis Lamp | 103.7 | BOS |
| +092+ | 2.49 | Dan Quisenberry | 75.3 | SLN |
| +094+ | 2.48 | Jeff Parrett | 100.3 | PHI |
| +100+ | 2.43 | Greg Minton | 83.7 | ANA |
| +101+ | 2.43 | Bob McClure | 47.3 | ANA |
| +099+ | 2.43 | Craig Lefferts | 104 | SFN |
| +103+ | 2.38 | Doug Jones | 73.3 | CLE |
| +104+ | 2.38 | Dan Plesac | 60.3 | MIL |
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