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Fans tuning in to Saturday’s marquee matchup between Duke and Virginia waited less than two minutes before getting what they came for. On an early Virginia possession, Duke’s Zion Williamson, the impossible freshman who moves with a guard’s agility while weighing 280 pounds, recovered a loose ball and hammered down a two-handed dunk with Old Testament fury.
Williamson is expected to be the top pick in this year’s N.B.A. draft and has been this season’s signature player — a quality so inseparable from his ferocious slams that a rare missed dunk last week against Boston College became a highlight in its own right.