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John Bazemore, Associated Press
North Carolina forward John Henson (31) comes off the court as coach Roy Williams looks on, after being injured during the first half of an NCAA college basketball game against the Maryland in the quarterfinals of the Atlantic Coast Conference tournament, Friday, March 9, 2012, in Atlanta.

CHAPEL HILL, N.C. — North Carolina coach Roy Williams says he probably won't know until Thursday whether John Henson will be ready for the Tar Heels' NCAA tournament opener.

Henson hurt his left wrist on a fall during the Atlantic Coast Conference tournament in Atlanta. The 6-foot-10 forward didn't play the final two games of the tournament, though he dressed out for the championship game against Florida State.

Williams says he is "hopeful" that Henson will be ready for Friday's game against the Lamar-Vermont winner. The top-seeded Tar Heels are playing about an hour west of the Chapel Hill campus in Greensboro.

Henson is averaging about 14 points, 10 rebounds and three blocks per game. He's the two-time ACC defensive player of the year.