Andrew Wiggins scored 12 of his 17 points in the second half, and No. 2 Kansas moved into the semifinals of the Battle 4 Atlantis, downing previously unbeaten Wake Forest 87-78 on Thursday.
Frank Mason scored 13 points and Joel Embiid added 10 for the Jayhawks (5-0), who had a 14-point halftime lead trimmed to four before hanging on in the final minutes.
Kansas will play Villanova on Friday night for a spot in the title game.