By Tzvi Machlin For over 40 years Duke head coach Mike “Coach K” Krzyzewski battled UNC for ACC and college basketball supremacy. Now his career with the Blue Devils is over, his final record against the Tar Heels is official. Per InsideCarolina, UNC’s final record against Duke during the Coach K era is an even 50-50. He lost his only game against UNC in the NCAA Tournament, went 11-4 against them in the ACC Tournament, and was 39-45 in the regular season. Over the course of his storied career, he did battle with five different UNC head coaches: Dean Smith, Bill Guthridge, Matt Doherty, Roy Wi…