| Team | Tm | Tier | Game |
|---|---|---|---|
| Los Angeles Dodgers | LAN | 4.21 | 198909250_SFN_LAN |
| Oakland Athletics | OAK | 3.15 | 198909270_TEX_OAK |
| Toronto Blue Jays | TOR | 2.75 | 198909250_TOR_DET |
| California Angels | ANA | 1.66 | 198909260_KCA_ANA |
| San Diego Padres | SDN | 1.57 | 198909250_CIN_SDN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Chicago White Sox | CHA | -2.84 | 198909250_MIN_CHA |
| Atlanta Braves | ATL | -2.68 | 198909250_ATL_HOU |
| San Francisco Giants | SFN | -2.51 | 198909260_SFN_LAN |
| Baltimore Orioles | BAL | -1.31 | 198909270_BAL_MIL |
| Detroit Tigers | DET | -1.19 | 198909250_TOR_DET |
Based on accumulated WAA for this season up to 1989-09-27.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +026+ | 4.84 | Jeff Montgomery | 90 | KCA |
| +038+ | 4.4 | Bill Landrum | 79.7 | PIT |
| +039+ | 4.32 | Larry Andersen | 88.3 | HOU |
| +050+ | 3.93 | Les Lancaster | 70.3 | CHN |
| +053+ | 3.88 | Mike Morgan | 152.3 | LAN |
| +055+ | 3.85 | Mark Davis | 91.3 | SDN |
| +056+ | 3.79 | Jay Howell | 79.3 | LAN |
| +059+ | 3.72 | Danny Darwin | 121 | HOU |
| +060+ | 3.69 | Roger McDowell | 90.7 | TOT |
| +064+ | 3.58 | Rob Dibble | 98.3 | CIN |
| +063+ | 3.58 | Gregg Olson | 82.3 | BAL |
| +067+ | 3.4 | Tom Henke | 86.3 | TOR |
| +074+ | 3.13 | Lee Guetterman | 100.7 | NYA |
| +075+ | 3.1 | Todd Burns | 94 | OAK |
| +076+ | 3.09 | Dennis Lamp | 109.3 | BOS |
| +078+ | 3.07 | Jim Acker | 121.7 | TOT |
| +077+ | 3.07 | Jesse Orosco | 77 | CLE |
| +083+ | 2.9 | Dennis Eckersley | 55.3 | OAK |
| +086+ | 2.87 | Frank DiPino | 84.7 | SLN |
| +089+ | 2.85 | Greg Minton | 89 | ANA |
| +091+ | 2.8 | Greg Harris | 128 | SDN |
| +093+ | 2.78 | Bob McClure | 51.7 | ANA |
| +104+ | 2.55 | Randy Myers | 83 | NYN |
| +105+ | 2.54 | Jeff Russell | 72.3 | TEX |
| +109+ | 2.45 | Chuck Crim | 114 | MIL |
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