John Isner, the highest-ranked U.S. man, tracks down a backhand against Novak Djokovic.
John Isner, the highest-ranked U.S. man, tracks down a backhand against Novak Djokovic. Al Diaz MIAMI HERALD STAFF
John Isner, the highest-ranked U.S. man, tracks down a backhand against Novak Djokovic. Al Diaz MIAMI HERALD STAFF