The 2013 D.C. United season was the club's eighteenth, and their eighteenth season in Major League Soccer, the top division of American soccer. The regular season began on March 2 and concluded on October 27. Outside of MLS play, the club competed in the U.S. Open Cup. Also, for the first time in their history, they played in the Walt Disney World Pro Soccer Classic, a preseason tournament to be held in February, after participating in the Carolina Challenge Cup for the past five seasons.