| Team | Tm | Tier | Game |
|---|---|---|---|
| Los Angeles Dodgers | LAN | 3.79 | 198909270_SFN_LAN |
| Oakland Athletics | OAK | 3.15 | 198909270_TEX_OAK |
| Toronto Blue Jays | TOR | 2.36 | 198909290_BAL_TOR |
| San Diego Padres | SDN | 1.57 | 198909270_CIN_SDN |
| California Angels | ANA | 1.56 | 198909270_KCA_ANA |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Chicago White Sox | CHA | -3.08 | 198909290_CLE_CHA |
| Atlanta Braves | ATL | -2.43 | 198909270_ATL_HOU |
| San Francisco Giants | SFN | -2.27 | 198909290_SFN_SDN |
| Baltimore Orioles | BAL | -1.31 | 198909270_BAL_MIL |
| Detroit Tigers | DET | -1.21 | 198909290_DET_NYA |
Based on accumulated WAA for this season up to 1989-09-29.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +028+ | 4.84 | Jeff Montgomery | 90 | KCA |
| +037+ | 4.4 | Bill Landrum | 79.7 | PIT |
| +039+ | 4.32 | Larry Andersen | 88.3 | HOU |
| +048+ | 4.05 | Les Lancaster | 71.7 | CHN |
| +053+ | 3.85 | Mark Davis | 91.3 | SDN |
| +057+ | 3.8 | Gregg Olson | 85 | BAL |
| +056+ | 3.8 | Danny Darwin | 122 | HOU |
| +058+ | 3.78 | Jay Howell | 79.3 | LAN |
| +060+ | 3.69 | Roger McDowell | 90.7 | TOT |
| +062+ | 3.66 | Rob Dibble | 99.3 | CIN |
| +065+ | 3.56 | Tom Henke | 88.3 | TOR |
| +070+ | 3.4 | Jim Acker | 125.7 | TOT |
| +073+ | 3.27 | Todd Burns | 96 | OAK |
| +076+ | 3.12 | Lee Guetterman | 100.7 | NYA |
| +078+ | 3.09 | Dennis Lamp | 109.3 | BOS |
| +080+ | 3.04 | Frank DiPino | 86.7 | SLN |
| +083+ | 2.99 | Dennis Eckersley | 56.3 | OAK |
| +086+ | 2.9 | Greg Minton | 89.7 | ANA |
| +089+ | 2.87 | Jesse Orosco | 77 | CLE |
| +092+ | 2.79 | Greg Harris | 128 | SDN |
| +099+ | 2.62 | Bob McClure | 52.3 | ANA |
| +105+ | 2.54 | Randy Myers | 83 | NYN |
| +106+ | 2.54 | Jeff Russell | 72.3 | TEX |
| +107+ | 2.53 | Chuck Crim | 117.3 | MIL |
| +112+ | 2.47 | Rick Honeycutt | 77 | OAK |
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