Harrison Barnes limped up and down the court on a sprained ankle, and starters Tyler Zeller and Kendall Marshall were on the bench with four fouls apiece. Throw in the fact that the sellout crowd at Maryland was making it difficult to concentrate, and it's safe to say the conditions weren't exactly ideal for North Carolina's biggest comeback of the season. The Tar Heels (No. 6 ESPN/USA Today, No. 5 AP) persevered, rallying from a nine-point deficit in the second half to pull out an 83-74 victory Saturday.