2013 U.S. Open Preview: Day Four
After a day in which rain impacted the schedule, the courts of the USTA Billie Jean King National Tennis Center are awash in talent on Day Four of the 2013 U.S. Open, as former men’s champs Roger Federer and Rafael Nadal, women’s defending champ Serena Williams, leading U.S. males John Isner and Sam Querrey, women’s…

