NCAA Tournament odds for March Madness first-round games on Thursday, March 20, including point spreads, moneylines, over/unders for betting on games.

The odds of achieving a perfect bracket for the college basketball tournament are about 1 in 9.22 quintillion.

NCAA Tournament begins its first day of wall-to-wall action on Thursday with first round games from all four regions. Upsets, buzzer beaters and thrilling highlights will fill our day soon, and if your bracket is set to be busted early there's always chances to get back in the action with some best bets.