Christian Watford scored 19 points as No. 18 Indiana topped Purdue 85-74 in the regular-season finale Sunday at Assembly Hall.
Will Sheehey scored 16 points and Cody Zeller added 13 for the Hoosiers (24-7, 11-7 Big Ten).
Lewis Jackson led Purdue (20-11, 10-8) with 17 points. Robbie Hummel had 16 points.
Indiana will be the fifth seed for the Big Ten tournament. Purdue will be the No. 6 seed for the event, which begins Thursday in Indianapolis.