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 12 points and Joel Embild 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.
Codi Miller-McIntyre scored 20 of his 26 points in the second half for Wake Forest (5-1). The Demon Deacons held Kansas to a season-low 47 percent from the field, but lost forward Devin Thomas after he was ejected for two technical fouls with 7:28 remaining.