| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 6.21 | 199006050_OAK_TEX |
| Cincinnati Reds | CIN | 2.66 | 199006030_CIN_LAN |
| Chicago White Sox | CHA | 2.52 | 199006050_SEA_CHA |
| New York Mets | NYN | 1.81 | 199006040_WAS_NYN |
| Houston Astros | HOU | 0.76 | 199006040_HOU_SDN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -2.95 | 199006030_ATL_SDN |
| Chicago Cubs | CHN | -1.9 | 199006040_CHN_PIT |
| Montreal Expos | WAS | -1.63 | 199006030_WAS_PIT |
| California Angels | ANA | -1.39 | 199006040_ANA_TEX |
| Texas Rangers | TEX | -1.1 | 199006050_OAK_TEX |
Based on accumulated WAA for this season up to 1990-06-05.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +012+ | 2.69 | Gregg Olson | 32 | BAL |
| +015+ | 2.59 | Mark Eichhorn | 43 | ANA |
| +022+ | 2.27 | Jeff Brantley | 41.7 | SFN |
| +038+ | 1.85 | Mark Williamson | 32 | BAL |
| +042+ | 1.82 | Bill Landrum | 27 | PIT |
| +047+ | 1.73 | Dennis Eckersley | 24 | OAK |
| +049+ | 1.72 | Rob Dibble | 28.7 | CIN |
| +050+ | 1.71 | Greg Harris | 39.3 | SDN |
| +051+ | 1.69 | Doug Jones | 29.7 | CLE |
| +052+ | 1.58 | Mike Schooler | 26.7 | SEA |
| +053+ | 1.58 | Larry Andersen | 31.7 | HOU |
| +055+ | 1.56 | Wayne Edwards | 26.7 | CHA |
| +059+ | 1.48 | Jeff Montgomery | 37.3 | KCA |
| +063+ | 1.38 | Barry Jones | 24.7 | CHA |
| +065+ | 1.38 | Lee Smith | 33.7 | TOT |
| +069+ | 1.35 | Bill Sampen | 29 | WAS |
| +073+ | 1.34 | Paul Gibson | 35.3 | DET |
| +074+ | 1.32 | Dennis Lamp | 39.7 | BOS |
| +076+ | 1.29 | Terry Leach | 32.3 | MIN |
| +079+ | 1.28 | Gene Nelson | 26 | OAK |
| +081+ | 1.26 | Bill Swift | 34.7 | SEA |
| XXXXX | 1.25 | Rick Aguilera | 25 | MIN |
| XXXXX | 1.25 | Edwin Nunez | 34.3 | DET |
| XXXXX | 1.25 | Keith Comstock | 20.7 | SEA |
| XXXXX | 1.25 | Juan Agosto | 35 | HOU |
_