| Team | Tm | Tier | Game |
|---|---|---|---|
| New York Mets | NYN | 4.03 | 198905040_CIN_NYN |
| Cincinnati Reds | CIN | 2.11 | 198905020_CIN_WAS |
| San Francisco Giants | SFN | 1.77 | 198905040_PIT_SFN |
| New York Yankees | NYA | 0.93 | 198905030_NYA_TEX |
| San Diego Padres | SDN | 0.84 | 198905030_CHN_SDN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Seattle Mariners | SEA | -4.32 | 198905020_DET_SEA |
| Boston Red Sox | BOS | -2.77 | 198905020_BOS_MIN |
| Minnesota Twins | MIN | -2.29 | 198905020_BOS_MIN |
| Pittsburgh Pirates | PIT | -1.89 | 198905030_PIT_SFN |
| Chicago Cubs | CHN | -1.33 | 198905020_CHN_SFN |
Based on accumulated WAA for this season up to 1989-05-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +024+ | 1.61 | Craig Lefferts | 21.7 | SFN |
| +036+ | 1.39 | Lee Guetterman | 15.7 | NYA |
| XXXXX | 1.12 | Luis Aquino | 16 | KCA |
| XXXXX | 1 | Jay Howell | 17 | LAN |
| XXXXX | 0.99 | Dennis Eckersley | 11.3 | OAK |
| XXXXX | 0.9 | Dennis Powell | 15 | SEA |
| XXXXX | 0.9 | Frank DiPino | 13 | SLN |
| XXXXX | 0.89 | Larry McWilliams | 19.3 | PHI |
| XXXXX | 0.88 | Bryan Harvey | 10.3 | ANA |
| XXXXX | 0.85 | Terry Leach | 12.3 | NYN |
| XXXXX | 0.85 | Greg Minton | 17.3 | ANA |
| XXXXX | 0.83 | Mark Knudson | 16.7 | MIL |
| XXXXX | 0.81 | Todd Burns | 19 | OAK |
| XXXXX | 0.8 | Mark Davis | 19 | SDN |
| XXXXX | 0.8 | Danny Darwin | 27.3 | HOU |
| XXXXX | 0.78 | Randy Myers | 14 | NYN |
| XXXXX | 0.76 | Roger McDowell | 11.3 | NYN |
| XXXXX | 0.75 | Bobby Thigpen | 13.7 | CHA |
| XXXXX | 0.74 | Rich Gossage | 11.3 | SFN |
| XXXXX | 0.74 | Norm Charlton | 13.7 | CIN |
| XXXXX | 0.73 | Jose Alvarez | 18 | ATL |
| XXXXX | 0.72 | Paul Assenmacher | 10.7 | ATL |
| XXXXX | 0.7 | Jeff Russell | 13.3 | TEX |
| XXXXX | 0.68 | Greg Harris | 19.3 | PHI |
| XXXXX | 0.65 | Jeff Parrett | 16.7 | PHI |
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