Villanova, the defending NCAA basketball national champion, is the No. 1 overall seed in the 2017 NCAA men's tournament. The other No. 1 seeds are Kansas in the Midwest, Gonzaga in the West, and North Carolina in the South. The Villanova Wildcats are in the top spot for the third time in school history, and they will play Thursday in Buffalo against the winner of the Mount St. Mary's and New Orleans game. The Final Four will be held April 1 and 3 in Phoenix.