| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 2.85 | 198905190_BOS_OAK |
| St. Louis Cardinals | SLN | 2.83 | 198905190_SLN_ATL |
| Cincinnati Reds | CIN | 2.44 | 198905190_CHN_CIN |
| Houston Astros | HOU | 1.85 | 198905190_PIT_HOU |
| Detroit Tigers | DET | 1.36 | 198905170_CHA_DET |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Toronto Blue Jays | TOR | -2.96 | 198905170_CLE_TOR |
| Boston Red Sox | BOS | -2.64 | 198905170_BOS_ANA |
| Cleveland Indians | CLE | -2.17 | 198905170_CLE_TOR |
| Baltimore Orioles | BAL | -1.93 | 198905170_BAL_TEX |
| Minnesota Twins | MIN | -1.79 | 198905170_KCA_MIN |
Based on accumulated WAA for this season up to 1989-05-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +007+ | 2.61 | Lee Guetterman | 29.7 | NYA |
| +037+ | 1.66 | Larry Andersen | 20 | HOU |
| +042+ | 1.53 | Jose Alvarez | 27 | ATL |
| +044+ | 1.51 | Randy Myers | 23 | NYN |
| +048+ | 1.46 | Danny Darwin | 35.3 | HOU |
| +051+ | 1.43 | Craig Lefferts | 29.7 | SFN |
| +052+ | 1.43 | Jay Howell | 22 | LAN |
| +053+ | 1.39 | Greg Minton | 26.3 | ANA |
| XXXXX | 1.24 | Norm Charlton | 19.7 | CIN |
| XXXXX | 1.23 | Jeff Russell | 19.3 | TEX |
| XXXXX | 1.14 | Todd Burns | 25.3 | OAK |
| XXXXX | 1.13 | Jeff Pico | 25.3 | CHN |
| XXXXX | 1.13 | Rick Aguilera | 21 | NYN |
| XXXXX | 1.03 | Pat Perry | 19.3 | CHN |
| XXXXX | 1 | Greg Harris | 16.7 | SDN |
| XXXXX | 0.89 | Kenny Rogers | 20.3 | TEX |
| XXXXX | 0.88 | John Franco | 20.3 | CIN |
| XXXXX | 0.88 | Mark Davis | 27.7 | SDN |
| XXXXX | 0.88 | Frank DiPino | 22.7 | SLN |
| XXXXX | 0.87 | Paul Assenmacher | 14.7 | ATL |
| XXXXX | 0.85 | Rich Gossage | 12.7 | SFN |
| XXXXX | 0.85 | Cecilio Guante | 22.3 | TEX |
| XXXXX | 0.81 | Don Aase | 14.7 | NYN |
| XXXXX | 0.79 | Eric Plunk | 14 | OAK |
| XXXXX | 0.79 | Gene Nelson | 14 | OAK |
_