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North Carolina's James Michael McAdoo (43) drives past Vermont's Matt Glass (34) during the first half of a Midwest Regional NCAA tournament second-round college basketball game in Greensboro, N.C., Friday, March 16, 2012. (AP Photo/Gerry Broome)

March Madness: No. 1 seeds in action

Top-seeded teams in action during the early rounds of the NCAA tournament.