Andy Murray: 'Stanislas Wawrinka is a threat'

Murray: 'Wawrinka is a threat'
Andy Murray says that a confident Stanislas Wawrinka will be a tough obstacle to overcome as he continues the defence of his US Open title at Flushing Meadows.

Andy Murray has said that he is wary of the threat posed by Stanislas Wawrinka ahead of Thursday's US Open quarter-final clash on Arthur Ashe.

The Scot warned that the 28-year-old, who has never been beyond the last eight of a Grand Slam, is capable of producing a shock if he truly believes in himself.

"If someone goes on the court not thinking they can win against you, then the match is as good as done," Reuters quotes the 26-year-old as saying.

"When they believe they can win, in an individual sport when you're just playing against one person, then you can cause an upset. It's as simple as that.

"Stan has improved quite a bit this year. He hasn't changed any of his strokes, technically. You'd expect most of it to be confidence."

The winner will face either Novak Djokovic or Mikhail Youzhny in the semi-finals.

Novak Djokovic waves to the crowd as he celebrates his win against David Goffin during the Western & Southern Open on August 15, 2013
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