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epa03385502 Roger Federer of Switzerland reacts as he plays Tomas Berdych of the Czech Republic during their quarterfinals round match on the tenth day of the 2012 US Open Tennis Championship at the USTA National Tennis Center in Flushing Meadows, New York, USA, 05 September 2012. The US Open runs through Sunday 09 September 2012. EPA/LARRY W. SMITH