FILE – In this Sept. 13, 2010 file photo, Novak Djokovic, left, of Serbia, walks away from Rafael Nadal, of Spain, after Nadal was presented with the championship trophy after winning the men’s championship match at the U.S. Open tennis tournament in New York. A year ago, Nadal seemed well on his way to overtaking Roger Federer as tennis’ greatest player. Fast-forward to now, and suddenly Nadal is taking a back seat to Djokovic. (AP Photo/Mark Humphrey, File)
