The Cascadia Cup is the name of the trophy created in 2004 by supporters of the Portland Timbers, Seattle Sounders, and Vancouver Whitecaps, which is awarded each season to the best soccer team in the Pacific Northwest.

[1] The Timbers, Sounders, and Whitecaps have roots dating to the days of the original North American Soccer League.

[3] In 2004, fan-based organizations supporting the Seattle Sounders, Portland Timbers and Vancouver Whitecaps sponsored the creation of a 2-foot-tall silver cup to be awarded annually to the club that finishes with the best record in the season series between the three rivals.

[4] From 2004 to 2006, the Cascadia Cup competition included all scheduled regular season A-League and later USL-1 matches played between the Sounders, Timbers, and Whitecaps.

[11] Supporters of the Timbers and Whitecaps decided to continue the Cascadia Cup without the Sounders for two years while playing in the USL.

In 2009, supporters of the Timbers and Whitecaps only included regular season USL-1 matches played between the teams and Portland won the cup for the first time.

Seattle claimed their third title by going undefeated in Cascadia Cup play – coming from behind to win both of their road games in Portland and Vancouver while earning draws at home.

Releases by MLS indicate that their trademark plan was an altruistic attempt to protect the Cascadia Cup from abuse by third parties,[21] a claim that was disputed by the contest-organizing fan groups.

The winner each year is decided by these criteria, in order:[23] Sounders Timbers Whitecaps • Total: Seattle with 10 highest finishes.