D.C. United | 19,772 followers on LinkedIn. The official LinkedIn page of the 4-time MLS Cup champions, D.C. United. | One of the founding clubs of Major League Soccer in 1996, D.C. United are the most decorated team in the United States with 13 domestic and international trophies, and the most championed professional team in the District of Columbia. The Club plays in Audi Field, the region's newest major professional sports venue which is located just 1.5 miles from the U.S.