On Day Eleven of the US Open is going to be on Thursday, September 8^th and will see the Arthur Ashe Stadium play host to an unfinished match between Gilles Muller and Rafael Nadal for the fourth round, as well as quarterfinal ladies single match. But another main event is a quarterfinals round between number one seed Novak Djokovic and Serbia's Janko Tipsarevic who is seeded 20^th. Novak Djokovic has been a finalist twice, once in 2007 and last year as well, but has never won a US Open. We'll see if that changes this year. Tipsarevic has made it farther than he ever had before this year, previously only making it to round three.

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