The Lamar Hunt U.S. Open Cup, commonly known as the U.S. Open Cup (USOC), is a knockout cup competition in men's soccer in the United States. It is the country's oldest ongoing national soccer competition. The competition was first held during the 1913–1914 season as the National Challenge Cup, with Brooklyn Field Club winning a trophy donated by Thomas Dewar for the promotion of American soccer. For the 1999 edition, it was renamed by the United States Soccer Federation (USSF) in honor of Lamar Hunt, an executive of the North American Soccer League (NASL) and Major League Soccer (MLS).