| Team | Tm | Tier | Game |
|---|---|---|---|
| New York Mets | NYN | 3.72 | 198905010_NYN_ATL |
| Detroit Tigers | DET | 2.07 | 198904290_DET_OAK |
| Cincinnati Reds | CIN | 2.02 | 198905010_CIN_WAS |
| Montreal Expos | WAS | 1.47 | 198904290_ATL_WAS |
| Oakland Athletics | OAK | 1.37 | 198904290_DET_OAK |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Seattle Mariners | SEA | -4.5 | 198904290_BAL_SEA |
| Boston Red Sox | BOS | -2.65 | 198904290_BOS_TEX |
| Minnesota Twins | MIN | -2.17 | 198904290_CLE_MIN |
| Pittsburgh Pirates | PIT | -1.75 | 198904300_SFN_PIT |
| Baltimore Orioles | BAL | -1.2 | 198904290_BAL_SEA |
Based on accumulated WAA for this season up to 1989-05-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +021+ | 1.44 | Craig Lefferts | 19.7 | SFN |
| +033+ | 1.3 | Lee Guetterman | 14.7 | NYA |
| XXXXX | 0.99 | Jay Howell | 17 | LAN |
| XXXXX | 0.98 | Dennis Eckersley | 11.3 | OAK |
| XXXXX | 0.98 | Danny Darwin | 24.3 | HOU |
| XXXXX | 0.88 | Larry McWilliams | 19.3 | PHI |
| XXXXX | 0.86 | Terry Leach | 12.3 | NYN |
| XXXXX | 0.82 | Mark Knudson | 16.7 | MIL |
| XXXXX | 0.82 | Dennis Powell | 14 | SEA |
| XXXXX | 0.81 | Cris Carpenter | 17 | SLN |
| XXXXX | 0.77 | Roger McDowell | 11.3 | NYN |
| XXXXX | 0.74 | Bryan Harvey | 8.7 | ANA |
| XXXXX | 0.74 | Greg Minton | 16 | ANA |
| XXXXX | 0.73 | Jose Alvarez | 18 | ATL |
| XXXXX | 0.72 | Mark Davis | 18 | SDN |
| XXXXX | 0.72 | Tim Crews | 13.7 | LAN |
| XXXXX | 0.72 | Frank DiPino | 11 | SLN |
| XXXXX | 0.7 | Bobby Thigpen | 10.7 | CHA |
| XXXXX | 0.65 | Randy Myers | 12.3 | NYN |
| XXXXX | 0.64 | Jeff Parrett | 16.7 | PHI |
| XXXXX | 0.63 | Todd Burns | 17 | OAK |
| XXXXX | 0.63 | Paul Assenmacher | 9.7 | ATL |
| XXXXX | 0.62 | Jeff Russell | 12.3 | TEX |
| XXXXX | 0.6 | Rich Gossage | 9.7 | SFN |
| XXXXX | 0.6 | Cecilio Guante | 14.7 | TEX |
_