The NCAA Tournament Sweet 16 matchups are set, featuring all top seeds.

UConn, Houston, Purdue, and Arizona are the favorites for the championship according to betting odds.

Potential upsets include No. 3 Illinois against No. 2 Iowa State and No. 5 Gonzaga against No. 1 Purdue.

Arizona, with the fourth-best odds, will compete against Clemson in the Sweet 16.

Championship odds favor UConn, then Houston, and Purdue in that order.

The 16 remaining teams are being reevaluated based on their performance in the tournament and regular season.

Viewership records were broken for the tournament's first and second rounds.

The Sweet 16 games are scheduled to begin on Thursday.