ATP Executive Chairman and President Brad Drewett, Spain's Marc Lopez, Alex Corretja, David Ferrer, Juan Carlos Ferrero, Serbia's Novak Djokovic, Spain's Nicolas Almagro and Marcel Granollers (L-R) pose for photos during a recognition ceremony at the O2 Arena in London, Britain, on Nov. 9, 2012. The Association of Tennis Profession (ATP) presented Ferrero a trophy to mark his retirement Friday. Former ATP World No. 1 Juan Carlos Ferrero, who won 16 career singles titles, retired from professional tennis in October this year. (Xinhua/Wang Lili)

Juan Carlos Ferrero (C) of Spain talks with his compatriot David Ferrer (L) as Novak Djokovic of Serbia stands by during a recognition ceremony at the O2 Arena in London, Britain, on Nov. 9, 2012. The Association of Tennis Profession (ATP) presented Ferrero a trophy to mark his retirement Friday. Former ATP World No. 1 Juan Carlos Ferrero, who won 16 career singles titles, retired from professional tennis in October this year. (Xinhua/Wang Lili)

Juan Carlos Ferrero (C) of Spain greets the audience with his trophy during a recognition ceremony at the O2 Arena in London, Britain, on Nov. 9, 2012. The Association of Tennis Profession (ATP) presented Ferrero a trophy to mark his retirement Friday. Former ATP World No. 1 Juan Carlos Ferrero, who won 16 career singles titles, retired from professional tennis in October this year. (Xinhua/Wang Lili)

Juan Carlos Ferrero (C) of Spain poses with his trophy during a recognition ceremony at the O2 Arena in London, Britain, on Nov. 9, 2012. The Association of Tennis Profession (ATP) presented Ferrero a trophy to mark his retirement Friday. Former ATP World No. 1 Juan Carlos Ferrero, who won 16 career singles titles, retired from professional tennis in October this year. (Xinhua/Wang Lili)