Murray through to US Open quarters

Andy Murray is through to the quarter finals of the US Open in New York after disposing of his Swiss opponent in straight sets.

You can watch the US Open online via the tournament's official website.

The 21-year-old Scot made light work of 10th seed Stanislas Wawrinka, beating him 6-1, 6-3, 6-3.

Sixth-seed Murray could now face world Raphael Nadal in the semi-finals. To do so he will have to overcome 19-year-old rival Juan Martin Del Potro of Argentina.

Although the two have only played one competitive match, in Rome last May, there is considerable tension between them. Murray won the match after Del Potro retired with an injury.

Del Potro made a comment about Murray's mother, who was watching her son, during that match.

"I haven't spoken to him since," Murray said. "It is another tennis match for me. When I get on court I have got to put emotions aside. Whether I like Del Potro or not doesn't make any difference."

Andy's brother Jamie Murray and his partner, Liezel Huber, reaching the semi-finals of the mixed doubles by beating the second seeds, Katarina Srebotnik and Nenad Zimonjic, 7-6, 6-7, 11-9.

www.usopen.org