There are few expansion teams that have been as consistently successful as the Seattle Sounders. The first season was only in 2009. They are less than a decade old. And yet, in that time, there are few clubs that have been more successful. Four Lamar Hunt US Open Cups, an MLS Cup, which came in an outstanding 2016 campaign, are proof of that.
Moreover, not only have they been extremely successful in regards to filling the trophy cabinet, but they have also been extremely consistent, qualifying for the playoffs in each one of the nine seasons that they have featured, and playing in the CONCACAF Champions League for the fifth time this season.