Ben Moore had a career-high 23 points, Nic Moore scored 20 and No. 15 Southern Methodist defeated
Justin McBride had 20 points and nine rebounds for the Knights (8-6, 2-1).
Southern Methodist and No. 22 South Carolina (15-0) are the only undefeated Division I teams, but the Mustangs know they will play only 30 games this season because of a postseason ban as part of NCAA sanctions handed down last fall that included Coach Larry Brown being suspended for the team's first nine games.
The Mustangs have won all six games since Brown returned. But the 75-year-old coach wasn't on the bench after halftime Sunday because he wasn't feeling well. Brown experienced symptoms of vertigo.
Eron Harris and Gavin Schilling each scored 13 points for Michigan State.
Shep Garner had 19 points for the Nittany Lions (10-7, 1-3).
The Bulldogs (12-4, 1-3) were led by Roosevelt Jones with 20 points.
Butler led, 31-24, early in the second half but Villanova answered with a 14-0 run to retake the lead.
Chinanu Onuaku led Louisville (13-3, 2-1) with 14 points. Scoring leader
The Boilermakers (14-3, 2-2) were led by Caleb Swanigan and P.J. Thompson with 12 points each.