NEW YORK - SEPTEMBER 09:  2007 U.S. Open Men's Singles Champion Roger Federer of Switzerland and runner-up Novak Djokovic of Serbia pose for a photo after the Men's Singles Final on day fourteen of the 2007 U.S. Open in Arthur Ashe Stadium at the Billie Jean King National Tennis Center on September 9, 2007 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Clive Brunskill/Getty Images)