Shea Sprague earned the start on the mound for North Carolina during Saturday’s 6-4 win over Louisville. He pitched four innings and while he struck out three, Sprague was responsible for giving up all four of the Cardinals’s runs. The UNC bullpen finished the final five innings without allowing a run and the bats took care of the rest. Despite letting up all of their runs during the outing, Tar Heels head coach Scott Forbes was still high on his starting pitcher in the postgame. “He’s a tough kid. He might not be throwing 94-95, but he is competing his tail off. He’s got good stuff, but his b…