Five big questions for the 2019 UNC Football season Posted Aug 21, 2019 Who is UNC's most important player on defense this season? Senior nose tackle Aaron Crawford looks to bounce back from the injury that ended his junior season. With only so many veteran players starting on the defensive side of the ball, Crawford’s production will be key to helping the Tar Heels do everything they want to do in their new-look defense. (Tar Heel Blog)