Tar Heels need more offense from Tyler Zeller Posted Jan 19, 2011 North Carolina's basketball team needs more pop from Tyler Zeller. Roy Williams said as much after Tuesday's win over Clemson in Chapel Hill when he mentioned that Zeller was in danger of losing his starting role to Justin Knox after Sunday's 20-point loss at Georgia Tech. "Z's been really good ... but I'm trying to push him to do even more," Williams said. "He responded tonight." (Raleigh News & Observer)