Team USA basketball was dealt some concerning news to start training camp on Sunday afternoon. Kevin Durant, the USA men’s leading scorer in Olympic history, has a minor calf strain and is sidelined to start training camp in Las Vegas. The move is out of precaution, according to Joe Vardon and Shams Charania. Durant leads all point scorers in USA men’s basketball history (435), but he has not practiced in either of the first two sessions for Team USA this weekend. It’s a precautionary approach with Durant even though the injury is not considered to be serious. Team USA opens up exhibition play…