Gainer, Rucker Give Clarity To Chizik's Jack Position Posted May 28, 2023 An interesting little twist in how Gene Chizik communicates regarding the jack position occurred late in spring practice. A year ago, a common question by the media and fans focused on what actually is the jack position. What does a jack do? It was sort of an offshoot of the hybrid defensive end/outside linebacker spot in Jay Bateman’s UNC defense. (Tar Heel Illustrated)