Isaac Haas had 24 points and six rebounds, and power forward Caleb Swanigan added 22 points and 10 rebounds in the No. 21 Purdue Boilermakers' dominating 91-68 victory.
Haas scored 13 points in the second half when the Boilermakers (15-4, 4-2 Big Ten) led by as many as 27. Swanigan had a four-point first half but was almost unstoppable during the second half, accounting for 18 points and five rebounds.
Purdue placed five players in double figures, also getting 14 from freshman guard Carsen Edwards, 11 from forward Vince Edwards - no relation - and 10 from point guard P.J. Thompson.
Illinois (12-7, 2-4) got 15 points from Maverick Morgan and 12 from Malcolm Hill but had no answer for the Boilermakers' two post players, each of whom had his way around the basket.
Purdue made 9 of its first 14 field goal attempts, including 5 of 7 from 3-point range, built a 19-5 lead with 13:01 to play in the first half and led 44-30 through 20 minutes, shooting 60 percent from the field (15 of 25).
The Illini travel to Ann Arbor on Saturday to play Michigan.