San Diego State's lack of guard play cost them against UConn. They did well running the court and playing up-tempo, but whenever they would claw back into the game they couldn't stop UConn from going on another run.
Florida screwed around all game and almost ended up losing to a vastly inferior BYU team. In all honesty, Jimmer Fredette looked terrible. That was the worst I have seen him play, and he totally botched the overtime. A good synopsis of the Florida team...talented, but not very strong mentally.
Butler-Wisconsin was the most interesting game, IMO. Butler's good players (Mack and Howard) were superior to Wisconsin's good players (Taylor and Leuer). Thats the simplest way to sum things up. Wisconsin made a late run, but were playing from behind virtually the whole game.
I don't understand what happened to Duke. They looked great in the first half, with Derrick Williams being Arizona's only bright spot. Perhaps Duke focused too much on Williams in the 2nd half, but that doesn't really explain the total collapse by Duke. Williams stopped scoring, but everyone else on Arizona piled on the points. Duke's offense was ok, but their defense was terrible. The last time I saw Duke play so bad on defense was their 1991 title game against UNLV.