The Final Four will be determined this week. Some high seeds have already been upset, but the NCAA tournament has always had surprises. SI's Alexander Wolff picks the 10 biggest upsets in its 53-year history.
1. 1985 Final: Villanova 66, Georgetown 64. The Wildcats needed to shoot 79% from the floor to win.
2. 1966 Final: Texas Western 72, Kentucky 65. The Miners left even Pat Riley undressed.
3. 1983 Final: North Carolina State 54, Houston 52. Lorenzo Charles turned an air ball into victory over Phi Slamma Jamma.
4. 1991 First Round East: Richmond 73, Syracuse 69. The Spiders are the first No. 15 to win a tournament game.
5. 1965 East Final: Princeton 109, Providence 69. The Friars had prematurely cut down the nets after an OT semifinal win over St. Joseph's.
6. 1981 Second Round Mideast: St. Joseph's 49, DePaul 48. A missed free throw KO'd the tournament favorite.
7. 1957 Final: North Carolina 54, Kansas 53, in triple OT. Against Wilt and Co., UNC hoops became religion.
8. 1947 Final: Holy Cross 58, Oklahoma 47. Freshman Bob Cousy came off the bench to give an Eastern team its first title.
9. 1987 First Round Southeast: Austin Peay 68, Illinois 67. ESPN's Dick Vitale made good on his promise to stand on his head.