Rafael Nadal lost just four games as he stormed past Tommy Robredo to set up a semi-final clash with Richard Gasquet at the US Open in New York.
The 12-time Grand Slam champion saw off his fellow Spaniard in an hour and 40 minutes, winning 6-0, 6-2, 6-2.
The first set lasted just 22 minutes with the 2010 champion conceding only four points to his opponent.
Robredo had upset the odds by beating Roger Federer in the fourth round but he had no answer to the world number two who's hardcourt record this year now stands at 20-0.
Frenchman Gasquet came through a mammoth quarter-final against fourth seed David Ferrer, eventually winning 6-3, 6-1, 4-6, 2-6, 6-3.
"I think I played great the first set - it's my first set so far this year at 100%," said Nadal.
"I am very happy with the way that I moved myself on court, very happy with the way I hit my forehand and my backhand especially.
"So in general it was my best match of the tournament, so that's great news."
Elsewhere in the tournament Britain's Andy Murray, and world number one, Novak Djokovic, both play their quarter-finals this evening.
A win for both will set up a semi-final rematch of last year's US Open final when Murray came out on top.
The Scot faces in-form Pole Stanislas Wawrinka, while the Serb faces the Russian Mikhail Youzhny.
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