Coach Warren gives insight on secondary, freshman Posted Aug 25, 2016 North Carolina has veterans who will start in the secondary against Georgia. But behind them there are a lot of new players. CarolinaBlue spoke with UNC defensive backs coach Charlton Warren on Wednesday for a breakdown of the position group. "I have five dudes in nickel who have played a bunch of snaps for us without putting any freshman on the field." (Carolina Blue)