Result: Juan Martin del Potro stuns Roger Federer in US Open quarter-finals

Result: Del Potro stuns Federer in US Open quarters
Roger Federer misses out on a place in the US Open semi-finals after losing out in four sets to Juan Martin del Potro.

Juan Martin del Potro has moved to within one win of a second US Open final after a stunning four-set victory over Roger Federer at Flushing Meadows.

The 2009 winner overcame illness and a two-set deficit to defeat Dominic Thiem in the last 16, and the Argentine was the clear underdog against Federer, who was attempting to set up a last-four showdown with Rafael Nadal.

However, a fine performance from Del Potro - combined with a below-par showing from his Swiss opponent - resulted in the 28-year-old running out the winner by a 7-5 3-6 7-6 6-4 scoreline.

There were just five break points in the night-session encounter on Arthur Ashe Stadium, but it was Del Potro who looked the more assured on the big points as he registered a second US Open triumph over Federer after their classic match in the final eight years ago.

Del Potro will now try to complete a famous double when Nadal stands in his way on Friday, with the winner going on to face either Pablo Carreno Busta or Kevin Anderson.

Roger Federer celebrates during the second round of the US Open on August 31, 2017
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