Says Athon Sports:
2. Villanova Upsets Georgetown
April 1, 1985 (Lexington, Ky.)
College basketball has had its fair share of low-seeded Cinderella stories, but the only team whose carriage never turned back into a pumpkin was the 1985 Villanova Wildcats. The No. 8 seed shocked the college basketball world by making the final and then played a game for the ages to upset top seed and defending national champion Georgetown.
https://athlonsports.com/college-basketball/top-10-most-memorable-moments-final-four-history