Ohio guard D.J. Cooper (5) shoots against North Carolina forward John Henson (31) during the second half of an NCAA tournament Midwest Regional college basketball game, Friday, March 23, 2012, in St. Louis. (AP Photo/Charlie Riedel)

Ohio forward Reggie Keely (30) shoots against North Carolina forward James Michael McAdoo (43) during the first half of an NCAA tournament Midwest Regional college basketball game, Friday, March 23, 2012, in St. Louis. (AP Photo/Charlie Riedel)

North Carolina forward Tyler Zeller (44) battles for a rebound against Ohio guard Ricardo Johnson (20) during the first half of an NCAA tournament Midwest Regional college basketball game, Friday, March 23, 2012, in St. Louis. (AP Photo/Charlie Riedel)

North Carolina forward James Michael McAdoo, left, is fouled by Ohio guard Stevie Taylor, right, in the first half of an NCAA tournament Midwest Regional college basketball game, Friday, March 23, 2012, in St. Louis. (AP Photo/Jeff Roberson)

Ohio guard Nick Kellogg (15), forward Reggie Keely (30) and North Carolina forward Harrison Barnes (40) battle for a rebound during the first half of an NCAA tournament Midwest Regional college basketball game, Friday, March 23, 2012, in St. Louis. (AP Photo/Charlie Riedel)

Ohio head coach John Groce directs his team during the first half of an NCAA tournament Midwest Regional college basketball game against North Carolina, Friday, March 23, 2012, in St. Louis. (AP Photo/Jeff Roberson)

North Carolina Tar Heels' Tyler Zeller shoots over Ohio Bobcats' Ivo Baltic during the second half of an NCAA tournament Midwest Regional college basketball game Friday, March 23, 2012, in St. Louis. (AP Photo/Jeff Roberson)

North Carolina Tar Heels head coach Roy Williams reacts against the Ohio Bobcats during the second half of an NCAA tournament Midwest Regional college basketball game Friday, March 23, 2012, in St. Louis. North Carolina won 73-65. (AP Photo/Charlie Riedel)

North Carolina Tar Heels head coach Roy Williams talks with Stilman White during the first half of an NCAA tournament Midwest Regional college basketball game Friday, March 23, 2012, in St. Louis. (AP Photo/Jeff Roberson)