NCAA Division I men's basketball tournament

The NCAA Division I men's basketball tournament, branded as March Madness, or The Big Dance, is a single-elimination tournament played in the United States to determine the men's college basketball national champion of the Division I level in the National Collegiate Athletic Association (NCAA). Played mostly during March, the tournament was first conducted in 1939 and currently consists of 76 teams.

Source: Wikipedia — NCAA Division I men's basketball tournament (CC BY-SA 4.0)