Inside UNC's Position Battles: Defensive Line Posted Aug 7, 2017 The word out of spring practice was that up to 12 Tar Heel defensive linemen could see significant reps during the 2017 season. The depth took a hit when rising sophomore defensive tackle Marlon Dunlap left the program this summer and announced his transfer to Florida on Sunday. Still, UNC's defensive line should be deep with a mix of young talent and veteran players. (Inside Carolina)