| Team | Tm | Tier | Game |
|---|---|---|---|
| Montreal Expos | WAS | 2.7 | 198904250_WAS_CIN |
| New York Mets | NYN | 2.23 | 198904260_ATL_NYN |
| Detroit Tigers | DET | 1.66 | 198904270_DET_ANA |
| Cincinnati Reds | CIN | 1.33 | 198904260_WAS_CIN |
| Houston Astros | HOU | 1.03 | 198904260_PHI_HOU |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Seattle Mariners | SEA | -4.14 | 198904260_TOR_SEA |
| Boston Red Sox | BOS | -3.37 | 198904250_CHA_BOS |
| Pittsburgh Pirates | PIT | -2.03 | 198904250_SDN_PIT |
| Chicago White Sox | CHA | -2 | 198904260_CHA_BOS |
| Chicago Cubs | CHN | -1.83 | 198904250_LAN_CHN |
Based on accumulated WAA for this season up to 1989-04-27.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +016+ | 1.43 | Mike Morgan | 25 | LAN |
| +027+ | 1.27 | Larry Andersen | 15.3 | HOU |
| XXXXX | 1.23 | Lee Guetterman | 14 | NYA |
| XXXXX | 1.18 | Craig Lefferts | 16.7 | SFN |
| XXXXX | 1.14 | Jose Alvarez | 15.7 | ATL |
| XXXXX | 0.97 | Todd Burns | 16 | OAK |
| XXXXX | 0.89 | Dennis Eckersley | 10.3 | OAK |
| XXXXX | 0.86 | Mark Davis | 15 | SDN |
| XXXXX | 0.85 | Atlee Hammaker | 17.7 | SFN |
| XXXXX | 0.8 | Danny Darwin | 22.3 | HOU |
| XXXXX | 0.75 | Bryan Harvey | 8.7 | ANA |
| XXXXX | 0.73 | Jay Howell | 14 | LAN |
| XXXXX | 0.72 | Tim Crews | 11.3 | LAN |
| XXXXX | 0.7 | Mark Knudson | 13 | MIL |
| XXXXX | 0.7 | Jeff Russell | 10.7 | TEX |
| XXXXX | 0.68 | Bobby Thigpen | 10.7 | CHA |
| XXXXX | 0.68 | Terry Leach | 10.3 | NYN |
| XXXXX | 0.67 | Juan Berenguer | 12.3 | MIN |
| XXXXX | 0.64 | Dennis Powell | 12 | SEA |
| XXXXX | 0.59 | Jeff Parrett | 16.3 | PHI |
| XXXXX | 0.59 | Greg Minton | 14 | ANA |
| XXXXX | 0.58 | Brian Holman | 9 | WAS |
| XXXXX | 0.55 | Gene Nelson | 6.3 | OAK |
| XXXXX | 0.54 | Donn Pall | 19 | CHA |
| XXXXX | 0.52 | Randy Myers | 11 | NYN |
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