Spain's David Ferrer wipes his face with a towel during his men's singles semi-final match against Serbia's Novak Djokovic on the eleventh day of the Australian Open tennis tournament in Melbourne on January 24, 2013. AFP PHOTO/PAUL CROCK IMAGE STRICTLY RESTRICTED TO EDITORIAL USE - STRICTLY NO COMMERCIAL USE
David Ferrer of Spain reacts after winning his match against Andy Murray of Great Britain during the day 5 of the Shanghai Rolex Masters at the Qi Zhong Tennis Center on October 9, 2014 in Shanghai, China.
David Ferrer (L) and Roger Federer celebrate with Moet & Chandon, the official champagne of the Western & Southern Open, following Federers victory of the men's finals at Linder Family Tennis Center on August 17, 2014 in Mason, Ohio.
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.
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.
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.
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.