| Team | Tm | Tier | Game |
|---|---|---|---|
| Los Angeles Dodgers | LAN | 3.88 | 198909200_LAN_SFN |
| Houston Astros | HOU | 3.42 | 198909190_HOU_ATL |
| Toronto Blue Jays | TOR | 3.06 | 198909200_BOS_TOR |
| Oakland Athletics | OAK | 2.97 | 198909180_OAK_CLE |
| California Angels | ANA | 2.14 | 198909180_ANA_MIN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Minnesota Twins | MIN | -3.7 | 198909180_ANA_MIN |
| Chicago White Sox | CHA | -2.92 | 198909180_CHA_KCA |
| Atlanta Braves | ATL | -1.44 | 198909200_HOU_ATL |
| Cleveland Indians | CLE | -0.86 | 198909200_OAK_CLE |
| Kansas City Royals | KCA | -0.76 | 198909190_CHA_KCA |
Based on accumulated WAA for this season up to 1989-09-20.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +027+ | 4.7 | Jeff Montgomery | 88 | KCA |
| +035+ | 4.24 | Bill Landrum | 77.7 | PIT |
| +046+ | 3.98 | Larry Andersen | 84.3 | HOU |
| +050+ | 3.77 | Mike Morgan | 150.7 | LAN |
| +052+ | 3.69 | Jay Howell | 78 | LAN |
| +055+ | 3.59 | Les Lancaster | 63.7 | CHN |
| +056+ | 3.5 | Jim Acker | 119 | TOT |
| +058+ | 3.45 | Roger McDowell | 85.3 | TOT |
| +059+ | 3.44 | Danny Darwin | 117.7 | HOU |
| +060+ | 3.43 | Gregg Olson | 80.3 | BAL |
| +061+ | 3.38 | Mark Davis | 85.3 | SDN |
| +062+ | 3.37 | Todd Burns | 92 | OAK |
| +066+ | 3.19 | Rob Dibble | 93.3 | CIN |
| +067+ | 3.18 | Randy Myers | 80.3 | NYN |
| +073+ | 3.04 | Tom Henke | 82 | TOR |
| +074+ | 3.02 | Lee Guetterman | 94.3 | NYA |
| +079+ | 2.9 | Jesse Orosco | 72 | CLE |
| +085+ | 2.81 | Dennis Eckersley | 51.7 | OAK |
| +087+ | 2.63 | Dennis Lamp | 103.7 | BOS |
| +088+ | 2.63 | Jeff Russell | 68.3 | TEX |
| +089+ | 2.62 | Craig Lefferts | 106 | SFN |
| +090+ | 2.61 | Greg Minton | 85.7 | ANA |
| +095+ | 2.5 | Dan Quisenberry | 75.3 | SLN |
| +098+ | 2.48 | Doug Jones | 74.3 | CLE |
| +100+ | 2.46 | Jeff Parrett | 102.3 | PHI |
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