The South Region, to be played in Atlanta, also included Cincinnati, Michigan State and Tennessee.
Other ACC teams in line for top-four seeds are Clemson at No. 9 and North Carolina, which was ranked No. 12 after a strong week with wins against Duke and N.C. State. Villanova bounced back with a good win Saturday, so we kept them second. The four No. 2 seeds are Auburn, Kansas, Duke and Cincinnati. Previously, Clemson has been a No. 4 seed on two occasions.
After the announcements, CBS's Jerry Palm estimated the rest of the brackets and added of Arizona that he was "surprised they were seeded this high".
There is still one month remaining in the season and some time for these seeds to switch up before Selection Sunday.
The rankings could certainly change before the field of 68 is selected on March 11 with more than 1,000 games yet to be played.
Villanova was No. 1 in the East, Xavier tops in the Midwest Region and Purdue No. 1 in the West Region.
Virginia may not be the No. 1 team in the nation when the Associated Press poll is released on Monday, but the Cavaliers are No. 1 where it counts.
The Sooners are losers of three in a row, but have notable wins over Oregon, Wichita State, Texas Tech and Kansas. "They have a great strength of schedule and they're 10-1 from home".