| Team | Tm | Tier | Game |
|---|---|---|---|
| St. Louis Cardinals | SLN | 3.19 | 198905160_SLN_HOU |
| Oakland Athletics | OAK | 2.7 | 198905160_NYA_OAK |
| Cincinnati Reds | CIN | 2.35 | 198905170_PIT_CIN |
| Houston Astros | HOU | 1.78 | 198905180_SLN_HOU |
| Detroit Tigers | DET | 1.36 | 198905170_CHA_DET |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Toronto Blue Jays | TOR | -4.19 | 198905160_CLE_TOR |
| Boston Red Sox | BOS | -2.64 | 198905170_BOS_ANA |
| Cleveland Indians | CLE | -2.17 | 198905170_CLE_TOR |
| Minnesota Twins | MIN | -2.01 | 198905160_KCA_MIN |
| Baltimore Orioles | BAL | -1.93 | 198905170_BAL_TEX |
Based on accumulated WAA for this season up to 1989-05-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +008+ | 2.41 | Lee Guetterman | 27.3 | NYA |
| +033+ | 1.66 | Larry Andersen | 20 | HOU |
| +043+ | 1.53 | Jose Alvarez | 27 | ATL |
| +045+ | 1.51 | Craig Lefferts | 28 | SFN |
| +049+ | 1.46 | Danny Darwin | 35.3 | HOU |
| +051+ | 1.43 | Jay Howell | 22 | LAN |
| +053+ | 1.4 | Greg Minton | 26.3 | ANA |
| +057+ | 1.35 | Randy Myers | 21 | NYN |
| XXXXX | 1.17 | Jeff Russell | 18.7 | TEX |
| XXXXX | 1.16 | Norm Charlton | 18.7 | CIN |
| XXXXX | 1.14 | Rick Aguilera | 21 | NYN |
| XXXXX | 1.14 | Todd Burns | 25.3 | OAK |
| XXXXX | 1.13 | Jeff Pico | 25.3 | CHN |
| XXXXX | 1.1 | Gene Nelson | 12.7 | OAK |
| XXXXX | 1.04 | Pat Perry | 19.3 | CHN |
| XXXXX | 1 | Greg Harris | 16.7 | SDN |
| XXXXX | 0.97 | Dennis Eckersley | 16 | OAK |
| XXXXX | 0.92 | Bobby Thigpen | 18 | CHA |
| XXXXX | 0.88 | Mark Davis | 27.7 | SDN |
| XXXXX | 0.88 | John Franco | 20.3 | CIN |
| XXXXX | 0.87 | Paul Assenmacher | 14.7 | ATL |
| XXXXX | 0.86 | Rick Honeycutt | 22 | OAK |
| XXXXX | 0.85 | Rich Gossage | 12.7 | SFN |
| XXXXX | 0.84 | Kenny Rogers | 19.7 | TEX |
| XXXXX | 0.82 | Don Aase | 14.7 | NYN |
_