Purdue's Robbie Hummel has his shot blocked by Ohio State's Othello Hunter, right, Tuesday in the Buckeyes' 80-77 win over the No. 15 Boilermakers.

COLUMBUS, Ohio — After a season of nothing going right, Ohio State could do no wrong for one night. The Buckeyes put things together just in time to knock Purdue out of the Big Ten lead.

Jamar Butler scored 23 of his 25 points in the second half and Othello Hunter, a 56 percent free throw shooter, hit two foul shots and made a big defensive play in overtime to lead the Buckeyes to an 80-77 victory over No. 15 Purdue 80-77 on Tuesday.

The loss dropped the Boilermakers (23-7, 14-3), a half-game behind first-place Wisconsin in the Big Ten..

"It's frustrating, but it's one game," Purdue coach Matt Painter said. "We controlled our own destiny, and now we don't."

The Buckeyes (18-12, 9-8), who lost their last four — all winnable games — with a series of mishaps, finally made all the right moves.

No. 1 North Carolina 90, Florida St. 77

Tyler Hansbrough had 20 points and Ty Lawson added 10 in 20 minutes in his first home game in a month for the Tar Heels (28-2, 13-2 Atlantic Coast Conference), who won their seventh straight. Lawson returned Saturday after missing six games with a sprained left ankle.

No. 9 Texas 70, Neb. 66

D.J. Augustin scored 22 points and the Longhorns (25-5, 12-3 Big 12) went 6-for-6 from the free throw line in the final minute. A.J. Abrams hit a 3-pointer with 41 seconds left to break a 61-61 tie. Texas was coming off an 83-80 loss at Texas Tech that ended an eight-game winning streak.

No. 21 Marquette 67, Florida Gulf Coast 37

Lazar Hayward had 18 points and 11 rebounds for the Golden Eagles (22-7), who came up with their second-best defensive effort in the nine seasons under coach Tom Crean. Marquette held Illinois State to 32 points during the 2004-05 season.