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.

With the conference tournament games coming to a close, the field of 68 teams will be announced during the NCAA Men's Basketball Championship Selection Show on CBS this Sunday.

Here's what you need to know to watch Selection Sunday today: The 68-team bracket for the NCAA Tournament on the men's side is being revealed starting at 6 p.m. ET on CBS. The women's NCAA Tournament bracket will also be revealed on Sunday. The broadcast is set for 8 p.m. ET on ESPN.