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epa04381499 US billionaire and hedge fund manager John Paulson watches as Roberto Bautista Agut of Spain plays Roger Federer of Switzerland on the ninth day of the 2014 US Open Tennis Championship at the USTA National Tennis Center in Flushing Meadows, New York, USA, 02 September 2014. The US Open runs through 08 September, a 15-day schedule. EPA/JASON SZENES