| Team | Tm | Tier | Game |
|---|---|---|---|
| Los Angeles Dodgers | LAN | 4.25 | 198909240_SDN_LAN |
| Toronto Blue Jays | TOR | 3.05 | 198909240_TOR_MIL |
| Oakland Athletics | OAK | 2.87 | 198909250_TEX_OAK |
| California Angels | ANA | 1.87 | 198909240_ANA_CLE |
| San Diego Padres | SDN | 1.58 | 198909240_SDN_LAN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -3.05 | 198909240_CIN_ATL |
| Chicago White Sox | CHA | -2.84 | 198909250_MIN_CHA |
| San Francisco Giants | SFN | -2.51 | 198909260_SFN_LAN |
| Detroit Tigers | DET | -1.25 | 198909240_BOS_DET |
| Baltimore Orioles | BAL | -1.03 | 198909260_BAL_MIL |
Based on accumulated WAA for this season up to 1989-09-26.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +026+ | 4.86 | Jeff Montgomery | 90 | KCA |
| +035+ | 4.41 | Bill Landrum | 79.7 | PIT |
| +040+ | 4.16 | Larry Andersen | 86.3 | HOU |
| +048+ | 3.94 | Les Lancaster | 70.3 | CHN |
| +050+ | 3.91 | Mike Morgan | 152.3 | LAN |
| +053+ | 3.8 | Jay Howell | 79.3 | LAN |
| +054+ | 3.77 | Mark Davis | 90 | SDN |
| +055+ | 3.73 | Danny Darwin | 121 | HOU |
| +059+ | 3.68 | Roger McDowell | 90.3 | TOT |
| +061+ | 3.6 | Gregg Olson | 82.3 | BAL |
| +064+ | 3.44 | Rob Dibble | 96.3 | CIN |
| +069+ | 3.3 | Tom Henke | 85 | TOR |
| +071+ | 3.15 | Lee Guetterman | 100.7 | NYA |
| +072+ | 3.12 | Todd Burns | 94 | OAK |
| +073+ | 3.11 | Dennis Lamp | 109.3 | BOS |
| +075+ | 3.09 | Jim Acker | 121.7 | TOT |
| +076+ | 3.08 | Jesse Orosco | 77 | CLE |
| +083+ | 2.91 | Dennis Eckersley | 55.3 | OAK |
| +087+ | 2.88 | Frank DiPino | 84.7 | SLN |
| +089+ | 2.86 | Greg Minton | 89 | ANA |
| +090+ | 2.78 | Bob McClure | 51.7 | ANA |
| +092+ | 2.74 | Greg Harris | 126.7 | SDN |
| +102+ | 2.56 | Randy Myers | 83 | NYN |
| +104+ | 2.55 | Jeff Russell | 72.3 | TEX |
| +107+ | 2.46 | Alejandro Pena | 76 | LAN |
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