CHAMPAIGN, Illinois (Ticker) -- In its final non-conference game of the season, it was more than a tune-up for 19th-ranked Illinois.
Deron Williams returned from a broken jaw for 20 points off the bench and Dee Brown added 16 to lead Illinois to an 80-73 overtime win over Illinois State to stretch its winning streak at Assembly Hall to 22 games.
Williams, playing for the first time since December 11, made 7-of-15 shots in 34 minutes. He entered averaging 12.9 points.
The Fighting Illini (9-2) trailed by as many as 11 points in the second half before rallying to force the extra session. Nick Smith's three-point play and Brown's 3-pointer started the overtime as Illinois took control and extended its winning streak to five games.
Trey Guidry made 4-of-7 3-pointers, including one that gave the Redbirds a 52-41 advantage with 11:55 left in the second half. Luther Head, who had 15 points, made a layup to cap a 19-9 run and cut Illinois State's lead to 67-66 with 66 seconds left in the second half.
Vince Greene, who handed out 10 assists, made 1-of-2 free throws to give the Redbirds a 68-66 lead with 35 seconds to go. Smith grabbed an offensive rebound and hit a pair from the line to tie the score with 19 seconds remaining.
The Redbirds' Marcus Arnold missed a hurried attempt from behind the arc shortly after. Illinois also had a chance for the win in regulation, but Brown's attempted 3-pointer was off the mark.
Illinois won the opening tap in the extra session and Smith converted a three-point play for a 71-68 lead with 4:39 to go. After an offensive foul on Arnold, Brown drained a 3-pointer to make it 74-68 and the Redbirds could not get closer than four points thereafter.
Illinois extended its home winning streak against non-conference foes to 31 games. The Illini host Ohio State in their Big Ten opener on Wednesday.
Arnold scored 23 points and Guidry added 16 for Illinois State (4-6), which shot 65 percent (15-of-23) in the second half.