Spain's Juan Carlos Ferrero poses with a trophy presented to him to mark his retirement after 13 years on the ATP tour next to Serbia's Novak Djokovic (R) and Spain's David Ferrer (L) on the fifth day of the ATP World Tour Finals tennis tournament in London on November 9, 2012. Former world number one Juan Carlos Ferrero retired from professional tennis in October 2012 after a career in which he won 16 ATP tour singles titles including a grand slam. AFP PHOTO / GLYN KIRK
David Ferrer of Spain plays a forehand in the round robin singles match against Kei Nishikori of Japan on day five of the Barclays ATP World Tour Finals at O2 Arena on November 13, 2014 in London, England.
Credit: Justin Setterfield
Sweat drips off the head of David Ferrer of Spain during a break between games in his second round match against Adrian Mannarino of France during day three of the 2014 Australian Open at Melbourne Park on January 15, 2014 in Melbourne, Australia.
Credit: Scott Barbour
David Ferrer of Spain celebrates his woin over Fabio Fognini of Italy during the final of the Rio Open at the Jockey Club Brasileiro on February 22, 2015 in Rio de Janeiro, Brazil.
Credit: Matthew Stockman
David Ferrer of Spain celebrates winning his third round match against Jeremy Chardy of France during day five of the 2014 Australian Open at Melbourne Park on January 17, 2014 in Melbourne, Australia.
Credit: Ryan Pierse
David Ferrer of Spain leaves the court following his semi final loss to Yen-Hsun Lu of Chinese Tapei during day five of the Heineken Open at the ASB Tennis Centre on January 10, 2014 in Auckland, New Zealand.
Credit: Phil Walter
David Ferrer of Spain celebrates after winning the final of match ATP Buenos Aires Copa Claro against Fabio Fognini of Italy on February 16, 2014 in Buenos Aires, Argentina.