| Team | Tm | Tier | Game |
|---|---|---|---|
| Los Angeles Dodgers | LAN | 4.28 | 198909220_SDN_LAN |
| Oakland Athletics | OAK | 2.99 | 198909210_OAK_MIN |
| Toronto Blue Jays | TOR | 2.83 | 198909230_TOR_MIL |
| California Angels | ANA | 2.22 | 198909210_ANA_CLE |
| San Diego Padres | SDN | 1.39 | 198909230_SDN_LAN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Baltimore Orioles | BAL | -3.65 | 198909230_NYA_BAL |
| Minnesota Twins | MIN | -3.08 | 198909210_OAK_MIN |
| Atlanta Braves | ATL | -2.27 | 198909230_CIN_ATL |
| Chicago White Sox | CHA | -2.03 | 198909230_CHA_TEX |
| Detroit Tigers | DET | -1.21 | 198909230_BOS_DET |
Based on accumulated WAA for this season up to 1989-09-23.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +027+ | 4.8 | Jeff Montgomery | 89 | KCA |
| +036+ | 4.26 | Bill Landrum | 77.7 | PIT |
| +045+ | 4 | Larry Andersen | 84.3 | HOU |
| +046+ | 3.95 | Mike Morgan | 152.3 | LAN |
| +051+ | 3.86 | Les Lancaster | 66.7 | CHN |
| +057+ | 3.7 | Jay Howell | 78 | LAN |
| +059+ | 3.59 | Danny Darwin | 119 | HOU |
| +060+ | 3.54 | Todd Burns | 93.7 | OAK |
| +061+ | 3.53 | Gregg Olson | 81.3 | BAL |
| +062+ | 3.49 | Roger McDowell | 88 | TOT |
| +063+ | 3.48 | Mark Davis | 86.3 | SDN |
| +065+ | 3.39 | Jim Acker | 120 | TOT |
| +066+ | 3.37 | Randy Myers | 82.3 | NYN |
| +067+ | 3.29 | Rob Dibble | 94.3 | CIN |
| +070+ | 3.15 | Tom Henke | 83 | TOR |
| +073+ | 3.11 | Jesse Orosco | 74.7 | CLE |
| +080+ | 2.96 | Lee Guetterman | 96 | NYA |
| +085+ | 2.91 | Dennis Eckersley | 52.7 | OAK |
| +086+ | 2.88 | Greg Minton | 89 | ANA |
| +088+ | 2.81 | Greg Harris | 124.7 | SDN |
| +089+ | 2.8 | Bob McClure | 51.7 | ANA |
| +097+ | 2.63 | Frank DiPino | 81.7 | SLN |
| +098+ | 2.63 | Craig Lefferts | 106 | SFN |
| +100+ | 2.56 | Doug Jones | 78 | CLE |
| +107+ | 2.48 | Jeff Parrett | 102.3 | PHI |
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