NCAA Division I men's basketball tournament upsets
An upset is a victory by an underdog team. In the context of the NCAA Division I men's basketball tournament, a single-elimination tournament, this generally constitutes a team defeating an opponent with a substantially higher seed. The NCAA defines a tournament upset as a victory by a team seeded five or more lines below the opponent that it defeats.
This is a list of victories since the tournament expanded to 64 teams in 1985. Teams with victories listed won games seeded No. 11 or lower in the Round of 64, seeded No. 7 or lower in the Round of 32 or the Sweet Sixteen, or seeded No. 6 or lower in the Elite Eight, Final Four, or national championship. All teams are listed by athletic brand names they used at the time of their wins, which do not always match those in use today.