Stay here for live updates, scores and analysis from the N.C.A.A. men’s basketball tournament Round of 32.
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Well, that was interesting. North Carolina narrowly — narrowly — avoided being the second No. 1 seed to get knocked off in the opening weekend.
The Tar Heels did not make it easy on themselves. After leading at one point 30-13 late in the first half, North Carolina let No. 8 Arkansas creep back and then, finally, take the lead with 12 minutes remaining in the game.