| Team | Tm | Tier | Game |
|---|---|---|---|
| Los Angeles Dodgers | LAN | 5.04 | 198909140_HOU_LAN |
| Oakland Athletics | OAK | 2.61 | 198909160_OAK_BOS |
| St. Louis Cardinals | SLN | 2.25 | 198909140_PIT_SLN |
| California Angels | ANA | 2.18 | 198909151_ANA_CHA |
| Toronto Blue Jays | TOR | 2.17 | 198909140_TOR_MIN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Chicago White Sox | CHA | -7.07 | 198909160_ANA_CHA |
| Baltimore Orioles | BAL | -4.64 | 198909150_KCA_BAL |
| Atlanta Braves | ATL | -2.11 | 198909140_ATL_SDN |
| Seattle Mariners | SEA | -0.95 | 198909150_SEA_NYA |
| Detroit Tigers | DET | -0.88 | 198909150_DET_MIN |
Based on accumulated WAA for this season up to 1989-09-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +024+ | 4.74 | Jeff Montgomery | 86 | KCA |
| +026+ | 4.69 | Jay Howell | 75 | LAN |
| +037+ | 4.15 | Bill Landrum | 76.7 | PIT |
| +044+ | 3.75 | Larry Andersen | 81.3 | HOU |
| +047+ | 3.67 | Les Lancaster | 57.3 | CHN |
| +058+ | 3.35 | Gregg Olson | 79.3 | BAL |
| +057+ | 3.35 | Todd Burns | 91.7 | OAK |
| +060+ | 3.3 | Danny Darwin | 115.7 | HOU |
| +061+ | 3.28 | Roger McDowell | 83.3 | TOT |
| +066+ | 3.12 | Jim Acker | 114 | TOT |
| +067+ | 3.11 | Tom Henke | 80 | TOR |
| +068+ | 3.08 | Randy Myers | 79.3 | NYN |
| +073+ | 3.04 | Mark Davis | 81.3 | SDN |
| +075+ | 3.02 | Rob Dibble | 91.3 | CIN |
| +074+ | 3.02 | Lee Guetterman | 94.3 | NYA |
| +084+ | 2.77 | Jesse Orosco | 70.3 | CLE |
| +088+ | 2.67 | Dennis Eckersley | 47.7 | OAK |
| +089+ | 2.66 | Dennis Lamp | 103.7 | BOS |
| +094+ | 2.51 | Jeff Parrett | 100.3 | PHI |
| +095+ | 2.47 | Bob McClure | 45.3 | ANA |
| +101+ | 2.43 | Chuck Crim | 103.7 | MIL |
| +100+ | 2.43 | Dan Quisenberry | 74.3 | SLN |
| +099+ | 2.43 | Greg Harris | 115.7 | SDN |
| +102+ | 2.41 | Greg Minton | 83.3 | ANA |
| +103+ | 2.4 | Doug Jones | 73.3 | CLE |
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