Exhale, North Carolina fans. Your Tar Heels will be playing in the third round of the NCAA Tournament on Saturday, but Thursday’s contest against Harvard was that close to going the other way. UNC needed one last defensive stand to eke out the victory.The Tar Heels, trailing 65-63, were able to tie the game on a jump hook by Justin Jackson with 48 seconds to play. After the Crimson missed on an opportunity to take the lead, UNC ran the fast break and executed it to perfection, as Marcus Paige found Jackson for a dunk in transition. Harvard’s Wesley Saunders missed a 3-point attempt with just seconds left on the clock.UNC will get the winner of Arkansas vs. Wofford, to be played later tonight.