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Novak Djokovic returns a shot to Marin Cilic during the first set in the U.S. Open tennis tournament in Flushing, New York, Sunday, August 31, 2008. (Photo by Paul J. Bereswill/Newsday/MCT/Sipa USA
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Novak Djokovic pumps his fist after winning a point while playing in the U.S. Open finals against Roger Federer on day14 at the U.S. Open in New York City on September 9,
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