Selection Sunday marks the unofficial start of the men's NCAA Tournament, when bids are given out, seeds are set and matchups are etched into a bracket that will be filled out by millions of people nationally during a beautifully chaotic three-week stretch that will culminate with men’s and women’s national champions being crowned.

The madness begins on Selection Sunday (Mar. 16) with the Selection Committee revealing the full NCAA tournament bracket for both the men's and women's NCAA teams. The men's bracket will be revealed at 6 p.m. ET.

NCAA Tournament bracket is being released on Selection Sunday evening as matchups are announced. March Madness begins with the First Four games on Tuesday and Wednesday, with first round NCAA Tournament games beginning Thursday at four sites.