US Open day 8: Djokovic tops Kohlschreiber into quarters

Updated: 2014-09-02 08:24

(Agencies)

US Open day 8: Djokovic tops Kohlschreiber into quarters

Stan Wawrinka of Switzerland returns a shot to Tommy Robredo of Spain during their men's singles match at the 2014 US Open tennis tournament in New York, September 1, 2014. [Photo/Agencies]