| Team | Tm | Tier | Game |
|---|---|---|---|
| New York Mets | NYN | 4.28 | 198905230_NYN_SDN |
| Cincinnati Reds | CIN | 2.26 | 198905240_SLN_CIN |
| Oakland Athletics | OAK | 2.03 | 198905230_OAK_MIL |
| Houston Astros | HOU | 1.15 | 198905230_CHN_HOU |
| Detroit Tigers | DET | 1.03 | 198905250_CLE_DET |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Chicago White Sox | CHA | -6.24 | 198905230_BAL_CHA |
| Boston Red Sox | BOS | -1.83 | 198905230_SEA_BOS |
| Pittsburgh Pirates | PIT | -1.71 | 198905230_PIT_ATL |
| Minnesota Twins | MIN | -1.37 | 198905230_MIN_TOR |
| Baltimore Orioles | BAL | -1.09 | 198905240_BAL_CHA |
Based on accumulated WAA for this season up to 1989-05-25.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +029+ | 1.86 | Larry Andersen | 25 | HOU |
| +038+ | 1.74 | Rick Aguilera | 28 | NYN |
| +036+ | 1.74 | Jay Howell | 25.7 | LAN |
| +037+ | 1.74 | Lee Guetterman | 31.7 | NYA |
| +041+ | 1.69 | Greg Minton | 29.7 | ANA |
| +044+ | 1.63 | Danny Darwin | 40 | HOU |
| +046+ | 1.61 | Randy Myers | 24 | NYN |
| +053+ | 1.48 | Craig Lefferts | 32.7 | SFN |
| +060+ | 1.38 | Pat Perry | 23.3 | CHN |
| +070+ | 1.3 | Greg Harris | 22.7 | SDN |
| +073+ | 1.26 | Todd Burns | 29 | OAK |
| XXXXX | 1.25 | Norm Charlton | 19.7 | CIN |
| XXXXX | 1.18 | Jose Alvarez | 31 | ATL |
| XXXXX | 1.17 | Cecilio Guante | 26 | TEX |
| XXXXX | 1.03 | Mark Davis | 29.3 | SDN |
| XXXXX | 1.03 | Frank DiPino | 27 | SLN |
| XXXXX | 1.02 | John Franco | 22 | CIN |
| XXXXX | 1.02 | Rich Gossage | 14.7 | SFN |
| XXXXX | 1 | Eric Plunk | 16.3 | OAK |
| XXXXX | 0.97 | Tom Gordon | 36.3 | KCA |
| XXXXX | 0.96 | Dennis Eckersley | 18.3 | OAK |
| XXXXX | 0.93 | Randy Kramer | 23.3 | PIT |
| XXXXX | 0.88 | Terry Leach | 15.3 | NYN |
| XXXXX | 0.86 | Kenny Rogers | 22.3 | TEX |
| XXXXX | 0.86 | Jeff Russell | 22.3 | TEX |
_