| Team | Tm | Tier | Game |
|---|---|---|---|
| New York Mets | NYN | 4.28 | 198905230_NYN_SDN |
| Cincinnati Reds | CIN | 2.27 | 198905210_CHN_CIN |
| Oakland Athletics | OAK | 2.03 | 198905230_OAK_MIL |
| Houston Astros | HOU | 1.59 | 198905210_PIT_HOU |
| Montreal Expos | WAS | 1.46 | 198905210_LAN_WAS |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Chicago White Sox | CHA | -6.24 | 198905230_BAL_CHA |
| Boston Red Sox | BOS | -1.99 | 198905210_BOS_OAK |
| Pittsburgh Pirates | PIT | -1.96 | 198905210_PIT_HOU |
| Minnesota Twins | MIN | -1.44 | 198905210_MIN_TEX |
| Baltimore Orioles | BAL | -1.17 | 198905210_CLE_BAL |
Based on accumulated WAA for this season up to 1989-05-23.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +008+ | 2.62 | Lee Guetterman | 29.7 | NYA |
| +032+ | 1.86 | Larry Andersen | 25 | HOU |
| +042+ | 1.61 | Randy Myers | 24 | NYN |
| +045+ | 1.52 | Jay Howell | 23 | LAN |
| +048+ | 1.48 | Craig Lefferts | 32.7 | SFN |
| +050+ | 1.48 | Rick Aguilera | 25 | NYN |
| +054+ | 1.46 | Greg Minton | 27 | ANA |
| +052+ | 1.46 | Danny Darwin | 38 | HOU |
| +060+ | 1.39 | Pat Perry | 23.3 | CHN |
| +062+ | 1.35 | Greg Harris | 20.7 | SDN |
| +071+ | 1.26 | Todd Burns | 29 | OAK |
| XXXXX | 1.25 | Norm Charlton | 19.7 | CIN |
| XXXXX | 1.2 | Jose Alvarez | 28.3 | ATL |
| XXXXX | 1.06 | Cecilio Guante | 24.7 | TEX |
| XXXXX | 1.06 | Frank DiPino | 25 | SLN |
| XXXXX | 1.02 | John Franco | 22 | CIN |
| XXXXX | 1 | Eric Plunk | 16.3 | OAK |
| XXXXX | 0.96 | Dennis Eckersley | 18.3 | OAK |
| XXXXX | 0.92 | Mark Davis | 28 | SDN |
| XXXXX | 0.88 | Terry Leach | 15.3 | NYN |
| XXXXX | 0.86 | Jeff Russell | 22.3 | TEX |
| XXXXX | 0.86 | Kenny Rogers | 22.3 | TEX |
| XXXXX | 0.85 | Rich Gossage | 12.7 | SFN |
| XXXXX | 0.82 | Rob Murphy | 27 | BOS |
| XXXXX | 0.81 | Don Aase | 17 | NYN |
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