| Team | Tm | Tier | Game |
|---|---|---|---|
| Houston Astros | HOU | 3.42 | 198909190_HOU_ATL |
| Oakland Athletics | OAK | 2.97 | 198909180_OAK_CLE |
| Toronto Blue Jays | TOR | 2.6 | 198909190_BOS_TOR |
| California Angels | ANA | 2.14 | 198909180_ANA_MIN |
| Boston Red Sox | BOS | 1.1 | 198909170_OAK_BOS |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Baltimore Orioles | BAL | -5.84 | 198909170_KCA_BAL |
| Minnesota Twins | MIN | -3.7 | 198909180_ANA_MIN |
| Chicago White Sox | CHA | -3.14 | 198909170_ANA_CHA |
| Atlanta Braves | ATL | -1.59 | 198909170_ATL_LAN |
| Kansas City Royals | KCA | -0.89 | 198909170_KCA_BAL |
Based on accumulated WAA for this season up to 1989-09-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +026+ | 4.68 | Jeff Montgomery | 88 | KCA |
| +033+ | 4.42 | Jay Howell | 77 | LAN |
| +036+ | 4.22 | Bill Landrum | 77.7 | PIT |
| +047+ | 3.82 | Larry Andersen | 82.3 | HOU |
| +051+ | 3.74 | Les Lancaster | 60.7 | CHN |
| +055+ | 3.51 | Jim Acker | 119 | TOT |
| +058+ | 3.35 | Roger McDowell | 84.3 | TOT |
| +059+ | 3.33 | Gregg Olson | 79.3 | BAL |
| +060+ | 3.33 | Todd Burns | 91.7 | OAK |
| +061+ | 3.28 | Mark Davis | 84.3 | SDN |
| +062+ | 3.28 | Danny Darwin | 115.7 | HOU |
| +066+ | 3.16 | Randy Myers | 80.3 | NYN |
| +070+ | 3.03 | Tom Henke | 82 | TOR |
| +073+ | 3 | Lee Guetterman | 94.3 | NYA |
| +082+ | 2.8 | Jesse Orosco | 71 | CLE |
| +086+ | 2.71 | Dennis Eckersley | 50.7 | OAK |
| +088+ | 2.62 | Dennis Lamp | 103.7 | BOS |
| +089+ | 2.6 | Craig Lefferts | 106 | SFN |
| +090+ | 2.6 | Greg Minton | 85.7 | ANA |
| +092+ | 2.53 | Jeff Russell | 67.3 | TEX |
| +094+ | 2.49 | Dan Quisenberry | 75.3 | SLN |
| +099+ | 2.44 | Jeff Parrett | 102.3 | PHI |
| +101+ | 2.42 | Bob McClure | 47.3 | ANA |
| +103+ | 2.38 | Doug Jones | 73.3 | CLE |
| +105+ | 2.37 | Dan Plesac | 60.3 | MIL |
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