The team was established in November 2007 as an MLS expansion team. The following year fans chose the Sounders name for the team through an online poll. They are the third Seattle soccer team to share the heritage of the Sounders name. The Sounders FC majority owner is Hollywood producer Joe Roth, and minority owners are Adrian Hanauer, Paul Allen, and comedian Drew Carey. Two time MLS Cup winner Sigi Schmid is the team's head coach.

Sounders FC home matches are played at Qwest Field. Along with many organized supporter groups, a 52-member marching band called the Sound Wave supports the team at each home game. Seattle Sounders FC played their first game on March 19, 2009, to a sold out crowd of 32,523, defeating the New York Red Bulls 3–0. They won their first trophy on September 2, 2009, after defeating D.C. United 2-1 at RFK Stadium in Washington, D.C. in the 2009 Lamar Hunt U.S. Open Cup final.

Reference: http://en.wikipedia.org/wiki/Seattle_Sounders_FC