| Team | Tm | Tier | Game |
|---|---|---|---|
| Los Angeles Dodgers | LAN | 4.28 | 198909220_SDN_LAN |
| Toronto Blue Jays | TOR | 3.06 | 198909200_BOS_TOR |
| Oakland Athletics | OAK | 2.99 | 198909210_OAK_MIN |
| California Angels | ANA | 2.22 | 198909210_ANA_CLE |
| Houston Astros | HOU | 2.13 | 198909200_HOU_ATL |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Minnesota Twins | MIN | -3.39 | 198909200_ANA_MIN |
| Chicago White Sox | CHA | -2.32 | 198909200_CHA_KCA |
| Atlanta Braves | ATL | -1.47 | 198909220_CIN_ATL |
| Cleveland Indians | CLE | -0.98 | 198909210_ANA_CLE |
| Seattle Mariners | SEA | -0.89 | 198909221_SEA_KCA |
Based on accumulated WAA for this season up to 1989-09-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +026+ | 4.79 | Jeff Montgomery | 89 | KCA |
| +036+ | 4.25 | Bill Landrum | 77.7 | PIT |
| +046+ | 3.99 | Larry Andersen | 84.3 | HOU |
| +047+ | 3.94 | Mike Morgan | 152.3 | LAN |
| +056+ | 3.7 | Jay Howell | 78 | LAN |
| +057+ | 3.62 | Les Lancaster | 64 | CHN |
| +059+ | 3.52 | Gregg Olson | 81.3 | BAL |
| +060+ | 3.48 | Roger McDowell | 88 | TOT |
| +061+ | 3.48 | Mark Davis | 86.3 | SDN |
| +062+ | 3.46 | Danny Darwin | 117.7 | HOU |
| +064+ | 3.38 | Jim Acker | 120 | TOT |
| +065+ | 3.38 | Todd Burns | 92 | OAK |
| +067+ | 3.36 | Randy Myers | 82.3 | NYN |
| +068+ | 3.28 | Rob Dibble | 94.3 | CIN |
| +070+ | 3.14 | Tom Henke | 83 | TOR |
| +073+ | 3.1 | Jesse Orosco | 74.7 | CLE |
| +081+ | 2.95 | Lee Guetterman | 96 | NYA |
| +082+ | 2.9 | Dennis Eckersley | 52.7 | OAK |
| +087+ | 2.81 | Greg Minton | 88.3 | ANA |
| +089+ | 2.79 | Bob McClure | 51.7 | ANA |
| +092+ | 2.64 | Dennis Lamp | 103.7 | BOS |
| +094+ | 2.63 | Craig Lefferts | 106 | SFN |
| +101+ | 2.49 | Doug Jones | 77.3 | CLE |
| +103+ | 2.47 | Jeff Parrett | 102.3 | PHI |
| +105+ | 2.46 | Greg Harris | 120.7 | SDN |
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