 Of the 64 berths, 31 are allocated to the conference tournament or regular season winners.The remaining 33 berths are supposed to be determined through an at-large process based upon teams' Ratings Percentage Index (RPI) that did not win their conference tournament.The NCAA Selection Committee names the top sixteen seeds for the tournament for home field hosting through the quarterfinal matches while teams that do not receive a seed are placed in matches to reduce travel.