| Team | Tm | Tier | Game |
|---|---|---|---|
| Los Angeles Dodgers | LAN | 5.03 | 198909090_LAN_SDN |
| Oakland Athletics | OAK | 2.8 | 198909080_NYA_OAK |
| Toronto Blue Jays | TOR | 2.06 | 198909090_TOR_CLE |
| San Diego Padres | SDN | 1.75 | 198909090_LAN_SDN |
| California Angels | ANA | 1.1 | 198909090_BOS_ANA |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Minnesota Twins | MIN | -3.92 | 198909090_MIN_KCA |
| Cleveland Indians | CLE | -2.27 | 198909070_TOR_CLE |
| Atlanta Braves | ATL | -1.69 | 198909080_ATL_CIN |
| Baltimore Orioles | BAL | -1.49 | 198909071_BAL_TEX |
| Chicago White Sox | CHA | -1.37 | 198909090_CHA_DET |
Based on accumulated WAA for this season up to 1989-09-09.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +021+ | 4.96 | Jay Howell | 73 | LAN |
| +024+ | 4.68 | Bill Landrum | 75 | PIT |
| +025+ | 4.67 | Jeff Montgomery | 85 | KCA |
| +044+ | 3.7 | Mike Morgan | 149.3 | LAN |
| +047+ | 3.61 | Larry Andersen | 79.7 | HOU |
| +054+ | 3.5 | Danny Darwin | 113 | HOU |
| +055+ | 3.46 | Les Lancaster | 52.3 | CHN |
| +062+ | 3.28 | Roger McDowell | 78.3 | TOT |
| +063+ | 3.27 | Jeff Parrett | 96.7 | PHI |
| +066+ | 3.17 | Tom Henke | 78 | TOR |
| +067+ | 3.16 | Rob Dibble | 87.7 | CIN |
| +070+ | 3.05 | Gregg Olson | 75.7 | BAL |
| +074+ | 2.95 | Mark Davis | 80 | SDN |
| +072+ | 2.95 | Randy Myers | 77.7 | NYN |
| +076+ | 2.87 | Dennis Eckersley | 45 | OAK |
| +077+ | 2.85 | Todd Burns | 85.7 | OAK |
| +080+ | 2.77 | Lee Guetterman | 91.3 | NYA |
| +082+ | 2.69 | Jim Acker | 109 | TOT |
| +091+ | 2.48 | Dan Quisenberry | 72 | SLN |
| +092+ | 2.47 | Jeff Russell | 66.3 | TEX |
| +097+ | 2.39 | Jesse Orosco | 65.7 | CLE |
| +099+ | 2.31 | Craig Lefferts | 96.7 | SFN |
| +108+ | 2.23 | Doug Jones | 71 | CLE |
| +107+ | 2.23 | Chuck Crim | 98.7 | MIL |
| +109+ | 2.22 | Dennis Lamp | 95.7 | BOS |
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