The Oklahoma Sooners are the athletic teams that represent the University of Oklahoma, located in Norman. The 19 men's and women's varsity teams are called the "Sooners", a reference to a nickname given to the early participants in the Land Run of 1889, which initially opened the Unassigned Lands in the future state of Oklahoma to non-native settlement.[2][3] The university's athletic teams compete in the National Collegiate Athletic Association (NCAA)'s Division I in the Big 12 Conference