(AP) - North Carolina is still unbeaten, but just barely.
Tyler Hansbrough scored 27 points and made a crucial block in the closing seconds as the top-ranked Tar Heels held on for an 83-82 victory over stubborn Georgia Tech on Wednesday night in Atlanta.
Danny Green put North Carolina ahead by making one of two free throws with 22 seconds remaining.
Georgia Tech had a chance at the upset, but Zack Peacock's shot was blocked by Hansbrough. Peacock retrieved the loose ball and got off a jumper that rimmed out, allowing North Carolina to escape.
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