Seattle Sounders Football Club is an American professional men's soccer club based in Seattle. The Sounders compete as a member of the Western Conference of Major League Soccer (MLS). The club was established on November 13, 2007, and began play in 2009 as an MLS expansion team. The Sounders are a phoenix club, carrying the same name as the original Sounders franchise that competed in the North American Soccer League (NASL) from 1974 to 1983.