Andy Murray dropped one set as he made it past Uzbekistan's Denis Istomin at the US Open to set up a quarter-final tie with Switzerland's Stanislas Wawrinka on Thursday.
Defending champion Murray was never in any serious trouble during his 6-7 (5-7) 6-1 6-4 6-4 win over the world number 65.
The 26-year-old did however admit to being troubled by the windy conditions as he made it through to his 17th Grand Slam quarter-final.
"I wanted to just try and get through the match. In the end it was difficult conditions. It was extremely windy," he said.
"With the way he plays, he hits the ball pretty big and flat on both sides, strokes pretty low, hard at times to control. He made it very difficult for me.
"With the way the third set ended up going, I was just very happy to get it done because he had chances at the end of the third set to go ahead."
As well as Istomin, Murray has beaten Germany's Florian Mayer, Argentina's Leonardo Mayer and Frenchman Michael Llodra as he attempts to claim a second grand slam of 2013.
Ninth seed Wawrinka caused a minor upset to make the last eight, beating fifth seed Thomas Berdych in four sets.
The winner of Thursday's match will meet either Novak Djokovic or Mikhail Youzhny in the semi-finals at Flushing Meadows.
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