| Team | Tm | Tier | Game |
|---|---|---|---|
| Los Angeles Dodgers | LAN | 5.35 | 198909100_LAN_SDN |
| Oakland Athletics | OAK | 2.76 | 198909100_NYA_OAK |
| Toronto Blue Jays | TOR | 2.5 | 198909100_TOR_CLE |
| San Diego Padres | SDN | 1.75 | 198909090_LAN_SDN |
| California Angels | ANA | 1.32 | 198909100_BOS_ANA |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Minnesota Twins | MIN | -3.94 | 198909100_MIN_KCA |
| Cleveland Indians | CLE | -1.78 | 198909090_TOR_CLE |
| Chicago White Sox | CHA | -1.64 | 198909110_CHA_BAL |
| Atlanta Braves | ATL | -1.58 | 198909090_ATL_CIN |
| Baltimore Orioles | BAL | -1.41 | 198909090_BAL_TEX |
Based on accumulated WAA for this season up to 1989-09-11.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +024+ | 4.71 | Bill Landrum | 75.3 | PIT |
| +025+ | 4.66 | Jeff Montgomery | 85 | KCA |
| +044+ | 3.69 | Mike Morgan | 149.3 | LAN |
| +045+ | 3.67 | Larry Andersen | 80.3 | HOU |
| +049+ | 3.58 | Les Lancaster | 53.7 | CHN |
| +058+ | 3.38 | Jeff Parrett | 98 | PHI |
| +061+ | 3.31 | Rob Dibble | 89.3 | CIN |
| +062+ | 3.25 | Roger McDowell | 80.3 | TOT |
| +065+ | 3.16 | Tom Henke | 78 | TOR |
| +067+ | 3.14 | Gregg Olson | 76.7 | BAL |
| +066+ | 3.14 | Danny Darwin | 113.7 | HOU |
| +070+ | 3.1 | Randy Myers | 79.3 | NYN |
| +074+ | 2.95 | Jim Acker | 112 | TOT |
| +075+ | 2.94 | Mark Davis | 80 | SDN |
| +076+ | 2.93 | Dennis Eckersley | 45.7 | OAK |
| +080+ | 2.84 | Todd Burns | 85.7 | OAK |
| +081+ | 2.83 | Lee Guetterman | 92 | NYA |
| +091+ | 2.56 | Dan Quisenberry | 73 | SLN |
| +093+ | 2.47 | Jeff Russell | 66.3 | TEX |
| +096+ | 2.44 | Jesse Orosco | 66.3 | CLE |
| +098+ | 2.42 | Bob McClure | 44.7 | ANA |
| +100+ | 2.36 | Craig Lefferts | 99.7 | SFN |
| +101+ | 2.31 | Dennis Lamp | 97 | BOS |
| +107+ | 2.22 | Chuck Crim | 98.7 | MIL |
| +108+ | 2.22 | Doug Jones | 71 | CLE |
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