| Team | Tm | Tier | Game |
|---|---|---|---|
| New York Mets | NYN | 3.77 | 198905020_NYN_ATL |
| Cincinnati Reds | CIN | 2.11 | 198905020_CIN_WAS |
| San Francisco Giants | SFN | 1.44 | 198905020_CHN_SFN |
| St. Louis Cardinals | SLN | 1.28 | 198904300_LAN_SLN |
| Montreal Expos | WAS | 1.16 | 198904300_ATL_WAS |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Seattle Mariners | SEA | -4.43 | 198905010_DET_SEA |
| Boston Red Sox | BOS | -2.77 | 198905020_BOS_MIN |
| Minnesota Twins | MIN | -2.29 | 198905020_BOS_MIN |
| Pittsburgh Pirates | PIT | -1.75 | 198904300_SFN_PIT |
| Chicago Cubs | CHN | -1.33 | 198905020_CHN_SFN |
Based on accumulated WAA for this season up to 1989-05-02.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +024+ | 1.45 | Craig Lefferts | 19.7 | SFN |
| +029+ | 1.39 | Lee Guetterman | 15.7 | NYA |
| XXXXX | 1 | Jay Howell | 17 | LAN |
| XXXXX | 0.99 | Dennis Eckersley | 11.3 | OAK |
| XXXXX | 0.99 | Danny Darwin | 24.3 | HOU |
| XXXXX | 0.89 | Larry McWilliams | 19.3 | PHI |
| XXXXX | 0.86 | Terry Leach | 12.3 | NYN |
| XXXXX | 0.84 | Mark Knudson | 16.7 | MIL |
| XXXXX | 0.82 | Dennis Powell | 14 | SEA |
| XXXXX | 0.79 | Bobby Thigpen | 11.7 | CHA |
| XXXXX | 0.78 | Greg Minton | 16.3 | ANA |
| XXXXX | 0.77 | Roger McDowell | 11.3 | NYN |
| XXXXX | 0.75 | Bryan Harvey | 8.7 | ANA |
| XXXXX | 0.74 | Rich Gossage | 11.3 | SFN |
| XXXXX | 0.74 | Jose Alvarez | 18 | ATL |
| XXXXX | 0.73 | Frank DiPino | 11 | SLN |
| XXXXX | 0.72 | Paul Assenmacher | 10.7 | ATL |
| XXXXX | 0.72 | Mark Davis | 18 | SDN |
| XXXXX | 0.72 | Tim Crews | 13.7 | LAN |
| XXXXX | 0.68 | Greg Harris | 19.3 | PHI |
| XXXXX | 0.65 | Jeff Parrett | 16.7 | PHI |
| XXXXX | 0.65 | Randy Myers | 12.3 | NYN |
| XXXXX | 0.64 | Todd Burns | 17 | OAK |
| XXXXX | 0.62 | Jeff Russell | 12.3 | TEX |
| XXXXX | 0.61 | Scott Garrelts | 34.7 | SFN |
_