Willie Martinez got right to the point Monday afternoon. When Tennessee Football’s defensive backs coach was asked what has freshman Boo Carter in line for significant playing time this season, he kept the explanation simple. “He’s a really good player,” Martinez said during his press conference following Monday’s practice. “Guy is so talented. I mean, really.” He’s getting plenty of opportunity to show it. After junior Jourdan Thomas last week was lost to a season-ending knee injury, it has been Carter and redshirt sophomore Christian Harrison getting “the bulk of the reps” at the Star positi…