Singles

ennis - Australian Open - Melbourne Park, Melbourne, Australia - 18/1/17 Victor Estrella Burgos of the Dominican Republic in action during his Men's singles second round match against Australia's Bernard Tomic. REUTERS/Jason Reed

Jason Reed/Reuters

Victor Estrella Burgos of the Dominican Republic in action during his Men’s singles second round match against Australia’s Bernard Tomic at the Australian Open, Melbourne, Australia. Photo Jason Reed/Reuters

Britain Wimbledon Tennis

AP Photo/Kirsty WigglesworthAngelique Kerber of Germany returns to Venus Williams of the U.S during their women's singles match on day eleven of the Wimbledon Tennis Championships in London, on Thursday

Roger Federer of Switzerland serves during his men's singles tennis match against Tommy Robredo of Spain at the Wimbledon Tennis Championships, in London...Roger Federer of Switzerland serves during his men's singles tennis match against Tommy Robredo of Spain at the Wimbledon Tennis Championships, in London July 1, 2014.    REUTERS/Toby Melville (BRITAIN  - Tags: SPORT TENNIS)

Toby Melville/Reuters

Roger Federer of Switzerland serves during his men’s singles tennis match against Tommy Robredo of Spain at the Wimbledon Tennis Championships on Tuesday, which he won in three sets 

Alize Cornet of France hits a return to Hsieh Su-Wei of Taiwan in their women's singles tennis match at the Wimbledon Tennis Championships, in London...Alize Cornet of France hits a return to Hsieh Su-Wei of Taiwan in their women's singles tennis match at the Wimbledon Tennis Championships, in London June 26, 2013.      REUTERS/Eddie Keogh (BRITAIN  - Tags: SPORT TENNIS)

Eddie Keogh/Reuters

Alizé Cornet of France hits a return to Hsieh Su-Wei of Taiwan in their women’s singles tennis match at the Wimbledon Championships in London on Wednesday.