| Team | Tm | Tier | Game |
|---|---|---|---|
| New York Mets | NYN | 4.03 | 198905040_CIN_NYN |
| Cincinnati Reds | CIN | 1.9 | 198905040_CIN_NYN |
| San Francisco Giants | SFN | 1.77 | 198905040_PIT_SFN |
| New York Yankees | NYA | 0.98 | 198905050_NYA_CHA |
| Oakland Athletics | OAK | 0.93 | 198905050_OAK_DET |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Seattle Mariners | SEA | -4.12 | 198905030_DET_SEA |
| Boston Red Sox | BOS | -2.67 | 198905050_TEX_BOS |
| Toronto Blue Jays | TOR | -2.5 | 198905050_ANA_TOR |
| Pittsburgh Pirates | PIT | -2.14 | 198905050_PIT_SDN |
| Chicago Cubs | CHN | -1.19 | 198905030_CHN_SDN |
Based on accumulated WAA for this season up to 1989-05-05.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +022+ | 1.66 | Craig Lefferts | 22.3 | SFN |
| +033+ | 1.5 | Lee Guetterman | 17 | NYA |
| XXXXX | 1.11 | Luis Aquino | 16 | KCA |
| XXXXX | 1.07 | Dennis Eckersley | 12.3 | OAK |
| XXXXX | 0.99 | Greg Minton | 19 | ANA |
| XXXXX | 0.99 | Jay Howell | 17 | LAN |
| XXXXX | 0.98 | Jose Alvarez | 21 | ATL |
| XXXXX | 0.97 | Scott Garrelts | 41.7 | SFN |
| XXXXX | 0.95 | Frank DiPino | 13.7 | SLN |
| XXXXX | 0.92 | Mark Knudson | 20.3 | MIL |
| XXXXX | 0.9 | Dennis Powell | 15 | SEA |
| XXXXX | 0.88 | Larry McWilliams | 19.3 | PHI |
| XXXXX | 0.85 | Terry Leach | 12.3 | NYN |
| XXXXX | 0.81 | Todd Burns | 19 | OAK |
| XXXXX | 0.79 | Danny Darwin | 27.3 | HOU |
| XXXXX | 0.79 | Mark Davis | 19 | SDN |
| XXXXX | 0.78 | Randy Myers | 14 | NYN |
| XXXXX | 0.76 | Bryan Harvey | 11.3 | ANA |
| XXXXX | 0.76 | Roger McDowell | 11.3 | NYN |
| XXXXX | 0.74 | Norm Charlton | 13.7 | CIN |
| XXXXX | 0.74 | Bobby Thigpen | 13.7 | CHA |
| XXXXX | 0.74 | Rich Gossage | 11.3 | SFN |
| XXXXX | 0.72 | Paul Assenmacher | 10.7 | ATL |
| XXXXX | 0.72 | Pat Perry | 15.7 | CHN |
| XXXXX | 0.7 | Jeff Russell | 13.3 | TEX |
_