| Team | Tm | Tier | Game |
|---|---|---|---|
| New York Mets | NYN | 4.23 | 198905060_HOU_NYN |
| San Francisco Giants | SFN | 2.08 | 198905060_SLN_SFN |
| Cincinnati Reds | CIN | 2.04 | 198905060_PHI_CIN |
| New York Yankees | NYA | 1.12 | 198905060_NYA_CHA |
| Oakland Athletics | OAK | 0.97 | 198905060_OAK_DET |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Boston Red Sox | BOS | -2.92 | 198905060_TEX_BOS |
| Toronto Blue Jays | TOR | -2.8 | 198905060_ANA_TOR |
| Seattle Mariners | SEA | -2.52 | 198905061_SEA_BAL |
| Pittsburgh Pirates | PIT | -2.31 | 198905060_PIT_SDN |
| Chicago Cubs | CHN | -1.01 | 198905040_CHN_SDN |
Based on accumulated WAA for this season up to 1989-05-06.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +021+ | 1.65 | Craig Lefferts | 22.3 | SFN |
| +031+ | 1.49 | Lee Guetterman | 17 | NYA |
| XXXXX | 1.24 | Jay Howell | 20 | LAN |
| XXXXX | 1.11 | Luis Aquino | 16 | KCA |
| XXXXX | 1.07 | Dennis Eckersley | 12.3 | OAK |
| XXXXX | 0.98 | Jose Alvarez | 21 | ATL |
| XXXXX | 0.96 | Scott Garrelts | 41.7 | SFN |
| XXXXX | 0.95 | Frank DiPino | 13.7 | SLN |
| XXXXX | 0.93 | Mark Davis | 20.7 | SDN |
| XXXXX | 0.91 | Mark Knudson | 20.3 | MIL |
| XXXXX | 0.84 | Terry Leach | 12.3 | NYN |
| XXXXX | 0.82 | Greg Harris | 21 | PHI |
| XXXXX | 0.81 | Todd Burns | 19 | OAK |
| XXXXX | 0.8 | Paul Assenmacher | 11.7 | ATL |
| XXXXX | 0.8 | Greg Minton | 19.3 | ANA |
| XXXXX | 0.79 | Danny Darwin | 27.3 | HOU |
| XXXXX | 0.79 | Jeff Russell | 14.3 | TEX |
| XXXXX | 0.78 | Randy Myers | 14 | NYN |
| XXXXX | 0.78 | Gene Nelson | 9 | OAK |
| XXXXX | 0.77 | Dennis Powell | 16 | SEA |
| XXXXX | 0.76 | Roger McDowell | 11.3 | NYN |
| XXXXX | 0.75 | Bryan Harvey | 11.3 | ANA |
| XXXXX | 0.74 | Rich Gossage | 11.3 | SFN |
| XXXXX | 0.73 | Norm Charlton | 13.7 | CIN |
| XXXXX | 0.72 | Pat Perry | 15.7 | CHN |
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