D.C. United is a professional soccer club based in Washington, D.C. that competes in the Eastern Conference of Major League Soccer, the top tier of American soccer. Domestically, the club has won four MLS Cups (league championships), four Supporters Shields (league regular season), three U.S. Open Cups (domestic cups) and six Eastern Conference championships. In international competitions, the club has one CONCACAF Champions League title and one Copa Interamericana, being the only American team to win the latter. In terms of trophies won, it is the joint-most successful club in American soccer (tied with the New York Cosmos and LA Galaxy). Founded in 1995, the club was an inaugural franchise in Major League Soccer, playing in MLS in every season since its first season in 1996. D.C. United currently plays at the Audi Field Stadium.