The last time a No. 15 seed upset a No. 2 was in 2001 (Hampton over Iowa State). So it was a shocking bracket-busting evening with Lehigh taking out Duke and Norfolk State's upset of Missouri. In a matter of hours, no perfect brackets remained. Only four brackets (out of 6.45 million entries) predicted 30 of 32 games correctly. Does your bracket still stand a chance?

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