Alan Griffin scored 16 points and grabbed a career-high 12 rebounds and the Illini beat Purdue 63-37.
Griffin, a 6-foot-5 guard, recorded the first double-double of his career for Illinois (10-5, 2-2 Big Ten).
Trent Frazier and Kofi Cockburn added 12 points each for the Illini.
Sasha Stefanovic led Purdue (9-6, 2-2) with eight points. Eric Hunter Jr. added seven for the Boilermakers, who never led.
Illinois was 26 of 57 (46%) from the field, while Purdue shot 25% (15 of 60).
Purdue’s 37 points were the fewest allowed by Illinois this season. The Boilermakers’ shooting percentage was the lowest allowed by Illinois in program history.
llinois’ bench scored 25 points to Purdue’s five. Illinois also had 30 points in the paint, compared to Purdue’s 14.
The Illini scored the first 11 points and took a 32-19 lead at halftime.
Cockburn scored 10 points in the opening frame, none bigger than a thunderous two-handed dunk at 11:09 that brought the crowd to its feet. Frazier also fired up the crowd with a spectacular underhand layup late in the first half after forcing a turnover at midcourt.
The Boilermakers didn’t score until 7-3 center Matt Haarms hit a free-throw at 13:09.
Griffin grabbed six offensive boards, many coming in the first half.
Illinois plays at Wisconsin on Wednesday.