How many rounds are in the tournament where Sherron Collins earned three championships?
Sherron Collins:  As an All-American member of the Kansas Jayhawks men's basketball team, he earned a national championship in the 2008 NCAA Men's Division I Basketball Tournament, three Big 12 Men's Basketball Tournament championships, and four consecutive Big 12 Conference regular season championships. Big 12 Men's Basketball Tournament:  It is a single-elimination tournament of four rounds, with the top four seeds getting byes in the first round.
four