| Team | Tm | Tier | Game |
|---|---|---|---|
| Los Angeles Dodgers | LAN | 6.43 | 198909050_LAN_HOU |
| Toronto Blue Jays | TOR | 2.98 | 198909030_MIN_TOR |
| Oakland Athletics | OAK | 2.82 | 198909040_BOS_OAK |
| San Diego Padres | SDN | 2.16 | 198909030_PHI_SDN |
| St. Louis Cardinals | SLN | 1.71 | 198909050_WAS_SLN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Minnesota Twins | MIN | -5.12 | 198909040_MIN_TEX |
| Baltimore Orioles | BAL | -2.56 | 198909030_BAL_CHA |
| Chicago White Sox | CHA | -2.27 | 198909050_TOR_CHA |
| Atlanta Braves | ATL | -1.88 | 198909030_CHN_ATL |
| Detroit Tigers | DET | -1.73 | 198909030_CLE_DET |
Based on accumulated WAA for this season up to 1989-09-05.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +020+ | 4.93 | Jay Howell | 73 | LAN |
| +028+ | 4.47 | Jeff Montgomery | 83 | KCA |
| +032+ | 4.36 | Bill Landrum | 71.3 | PIT |
| +041+ | 3.79 | Jeff Parrett | 95.7 | PHI |
| +045+ | 3.7 | Mike Morgan | 147.7 | LAN |
| +051+ | 3.54 | Larry Andersen | 79 | HOU |
| +058+ | 3.28 | Danny Darwin | 110.7 | HOU |
| +059+ | 3.22 | Les Lancaster | 49.7 | CHN |
| +068+ | 3.04 | Roger McDowell | 75.7 | TOT |
| +069+ | 2.99 | Dennis Eckersley | 44 | OAK |
| +071+ | 2.97 | Rob Dibble | 85.7 | CIN |
| +073+ | 2.87 | Tom Henke | 74.3 | TOR |
| +074+ | 2.86 | Gregg Olson | 73.7 | BAL |
| +076+ | 2.83 | Todd Burns | 85.7 | OAK |
| +078+ | 2.8 | Jim Acker | 105.7 | TOT |
| +082+ | 2.72 | Lee Guetterman | 91 | NYA |
| +085+ | 2.66 | Mark Davis | 77 | SDN |
| +086+ | 2.64 | Randy Myers | 74 | NYN |
| +094+ | 2.44 | Mike Schooler | 66.3 | SEA |
| +096+ | 2.41 | Jeff Russell | 63.3 | TEX |
| +095+ | 2.41 | Jesse Orosco | 63.3 | CLE |
| +097+ | 2.4 | Craig Lefferts | 95.7 | SFN |
| +100+ | 2.34 | Mitch Williams | 76 | CHN |
| +110+ | 2.22 | Dan Quisenberry | 69.3 | SLN |
| +112+ | 2.2 | Tim Burke | 77.7 | WAS |
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