| 2025 |
MLS |
Inter Miami CF |
Vancouver Whitecaps FC |
series |
| 2024 |
MLS |
LA Galaxy |
Red Bull New York |
series |
| 2023 |
MLS |
Columbus Crew |
Los Angeles Football Club |
series |
| 2022 |
MLS |
Los Angeles Football Club |
Philadelphia Union |
series |
| 2021 |
MLS |
New York City Football Club |
Portland Timbers |
series |
| 2020 |
MLS |
Columbus Crew |
Seattle Sounders FC |
series |
| 2019 |
MLS |
Seattle Sounders FC |
Toronto FC |
series |
| 2018 |
MLS |
Atlanta United |
Portland Timbers |
series |
| 2017 |
MLS |
Toronto FC |
Seattle Sounders FC |
series |
| 2016 |
MLS |
Seattle Sounders FC |
Toronto FC |
series |
| 2015 |
MLS |
Portland Timbers |
Columbus Crew |
series |
| 2014 |
MLS |
LA Galaxy |
New England Revolution |
series |
| 2013 |
MLS |
Sporting Kansas City |
Real Salt Lake |
series |
| 2012 |
MLS |
LA Galaxy |
Houston Dynamo FC |
series |
| 2011 |
MLS |
LA Galaxy |
Houston Dynamo FC |
series |
| 2010 |
MLS |
Colorado Rapids |
FC Dallas |
series |
| 2009 |
MLS |
Real Salt Lake |
LA Galaxy |
series |
| 2008 |
MLS |
Columbus Crew |
Red Bull New York |
series |
| 2007 |
MLS |
Houston Dynamo FC |
New England Revolution |
series |
| 2006 |
MLS |
Houston Dynamo FC |
New England Revolution |
series |
| 2005 |
MLS |
LA Galaxy |
New England Revolution |
series |
| 2004 |
MLS |
D.C. United |
Kansas City Wizards |
series |
| 2003 |
MLS |
San Jose Earthquakes |
Chicago Fire FC |
series |
| 2002 |
MLS |
LA Galaxy |
New England Revolution |
series |
| 2001 |
MLS |
San Jose Earthquakes |
LA Galaxy |
series |
| 2000 |
MLS |
Kansas City Wizards |
Chicago Fire FC |
series |
| 1999 |
MLS |
D.C. United |
LA Galaxy |
series |
| 1998 |
MLS |
Chicago Fire FC |
D.C. United |
series |
| 1997 |
MLS |
D.C. United |
Colorado Rapids |
series |
| 1996 |
MLS |
D.C. United |
LA Galaxy |
series |