COLUMBIA, S.C. -- Zion Williamson took on 7-foot-6 Tacko Fall at the end and won, and top-seeded Duke survived when two last-ditch shots by UCF rolled off the rim.
Aubrey Dawkins finished with 32 points, but his tip-in try just missed Sunday, and Duke advanced with a 77-76 victory to reach the Sweet 16.
Williamson had 32 points, including a layup over Fall with 14.4 seconds left and his team trailing 76-73. Williamson was fouled and missed the free throw, but RJ Barrett scored on a putback to put Blue Devils (31-5) ahead.