Trent Frazier scored Illinois' final 10 points in regulation and put the Illini ahead with a free throw in overtime, and the defense took care of the rest in a 75-71 victory over Indiana on Tuesday night.

Frazier finished with 19 points and Kofi Cockburn added 16 points and 10 rebounds. But Illinois wouldn't have won its third straight - or for the first time since 2010 on the Hoosiers' home court - without a suffocating defense.

Illinois gave up only two baskets over the final 11 1/2 minutes and only one basket and three points in overtime, which started with the Illini taking charges on Indiana's first two possessions.

Trayce Jackson-Davis had 19 points and 14 rebounds for the Hoosiers (9-8, 4-6), who have dropped two straight. Race Thompson added 18 points and eight rebounds as he helped stake Indiana to a 64-58 lead with five minutes to go.

It didn't last. Frazier tied the score with back-to-back 3-pointers and gave Illinois a 68-66 lead by making four free throws. Indiana tied it on Armaan Franklin's layup with 30.5 seconds left in regulation.

One free throw from Frazier in overtime was all Illinois' defense needed.

Frazier drew a technical foul less than three minutes into the game when he celebrated making a 3 by appearing to say something to the Hoosiers bench. 

Curbelo finished with 12 points. Ayo Dosunmu had 10 points before fouling out near the end of regulation. 

The Illini forced 11 turnovers in the final 25 minutes and 15 in the game.

Illinois hosts No. 19 Wisconsin on Saturday.