Auburn (South Region), Duke (East Region), Houston (Midwest Region) and Florida (West Region) are the four No. 1 seeds leading the 68-team field, while Texas, Xavier, San Diego State and UNC were the last four in. West Virginia, Ohio State, Indiana and Boise State were the first four out.

After weeks of anticipation and speculation, the bracket-filling finally can begin today as the 68-team fields for the NCAA men's and women's basketball tournaments are revealed. "Selection Sunday" will unveil which teams made the March Madness tournaments (and which "bubble" teams were left disappointed) that will unfold over the course of four regionals to will determine the Final Four national semifinals.