The Lamar Hunt U.S. Open Cup, commonly known as the U.S. Open Cup (USOC), is a knock-out cup competition in American soccer. It is the oldest ongoing national soccer competition in the U.S. The 105th edition, held in 2018, was contested by 97 clubs from the two professional leagues sanctioned by the United States Soccer Federation: Major League Soccer (MLS), and the United Soccer League (USL), and also amateur clubs in the earlier rounds of the tournament after qualifying through their leagues. The overall champion earns a total of $300,000 in prize money, while the runner-up receives $100,000, and the furthest-advancing team from each lower division league receives $25,000. In addition, the tournament winner qualifies for the group stage of the CONCACAF Champions League.