Tennis

Eric Gaillard/Reuters

The feet of Alexander Zverev of Germany are seen during his match against Andrey Rublev of Russia 

Andy Murray...Andy Murray of Britain yells during his semifinal match against Milos Raonic of Canada at the Australian Open tennis championships in Melbourne, Australia, Friday, Jan. 29, 2016.(AP Photo/Rafiq Maqbool)

Rafiq Maqbool/AP

Andy Murray of Britain yells during his semifinal match against Milos Raonic of Canada at the Australian Open tennis championships in Melbourne

France's Monfils hits a shot on his knees during his quarter-final match against Canada's Raonic at the Australian Open tennis tournament at Melbourne Park

© Jason O'Brien Action Images via Reuters

France’s Gael Monfils hits a shot on his knees during his quarter-final match against Canada’s Milos Raonic at the Australian Open tennis tournament at Melbourne Park, Australia

Williams of the U.S. serves during her quarter-final match against Russia's Sharapova at the Australian Open tennis tournament at Melbourne Park...Serena Williams of the U.S. serves during her quarter-final match against Russia's Maria Sharapova at the Australian Open tennis tournament at Melbourne Park, Australia, January 26, 2016. REUTERS/Thomas Peter       TPX IMAGES OF THE DAY

Thomas Peter/Reuters

Serena Williams of the U.S. serves during her quarter-final match against Russia’s Maria Sharapova at the Australian Open tennis tournament at Melbourne Park, Australia

Novak Djokovic of Serbia prepares to serve to  Andreas Seppi of Italy during their third round match at the Australian Open tennis championships in Melbourne, Australia, Friday, Jan. 22, 2016.(AP Photo/Andrew Brownbill)

Andrew Brownbill/AP

Novak Djokovic of Serbia prepares to serve to Andreas Seppi of Italy during their third round match at the Australian Open tennis championships in Melbourne, Australia

Canada's Raonic signs autographs after winning his second round match against Spain's Robredo at the Australian Open tennis tournament at Melbourne Park...Canada's Milos Raonic signs autographs after winning his second round match against Spain's Tommy Robredo at the Australian Open tennis tournament at Melbourne Park, Australia, January 21, 2016. REUTERS/Issei Kato

Issei Kato/Reuters

Canada’s Milos Raonic signs autographs after winning his second round match against Spain’s Tommy Robredo at the Australian Open tennis tournament at Melbourne Park, Australia 

Germany's Brown plays during his doubles match at the Australian Open tennis tournament at Melbourne Park...Germany's Dustin Brown plays during his doubles match at the Australian Open tennis tournament at Melbourne Park, Australia, January 20, 2016. REUTERS/Jason O'Brien

Jason O'Brien/Reuters

Germany’s Dustin Brown plays during his doubles match at the Australian Open tennis tournament at Melbourne Park, Australia

Fans of Great Britain show their support during day one of the Davis Cup Final at the Flanders Expo Centre, Ghent. PRESS ASSOCIATION Photo. Picture date: Friday November 27, 2015.

Andrew Milligan/PA

Fans of Great Britain show their support during day one of the Davis Cup Final at the Flanders Expo Centre, Ghent

Jeremy Lee/Reuters
BNP Paribas WTA Finals, Czech Republic’s Lucie Safarova in action during the round robin match in Singapore

  

Novak Djokovic of Serbia hits a return against John Isner of U.S. during their men's singles match at the China Open tennis tournament in Beijing, China, October 9, 2015.

Kim Kyung-Hoon/Reuters

Novak Djokovic of Serbia hits a return against John Isner of U.S. during their men’s singles match at the China Open tennis tournament in Beijing, China

Spectators wearing masks watch men's singles match between David Goffin of Belgium and Andreas Seppi of Italy, on a polluted day at the China Open tennis tournament in Beijing...Spectators wearing masks watch men's singles match between David Goffin of Belgium and Andreas Seppi of Italy, on a polluted day at the China Open tennis tournament in Beijing, China, October 5, 2015.

Kim Kyung-Hoon/Reuters

Spectators wearing masks watch men’s singles match between David Goffin of Belgium and Andreas Seppi of Italy, on a polluted day at the China Open tennis tournament in Beijing, China on Monday

Great Britain tennis fans show support for their team during day one of the Davis Cup Semi Finals between Great Britain and Australia at the Emirates Arena, Glasgow

Andrew Milligan/PA

Great Britain tennis fans show support for their team during day one of the Davis Cup Semi Finals between Great Britain and Australia at the Emirates Arena, Glasgow

People relax in the sun as they queue to attend day 11 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 10, 2015 in London, England. The 129th tournament to be hosted at Wimbledon is due to run for two weeks from Monday 29th June

Carl Court/Getty Images

People relax in the sun as they queue to attend day 11 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on Friday in London, England

Maria Sharapova of Russia hits a shot during her match against Serena Williams of the U.S.A. at the Wimbledon Tennis Championships in London...Maria Sharapova of Russia hits a shot during her match against Serena Williams of the U.S.A. at the Wimbledon Tennis Championships in London, July 9, 2015.

Suzanne Plunkett/Reuters

Maria Sharapova of Russia hits a shot during her match against Serena Williams of the U.S.A. at the Wimbledon Tennis Championships in London

Novak Djokovic celebrates a break of serve against Kevin Anderson during day Seven of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon. PRESS ASSOCIATION Photo. Picture date: Tuesday July 7, 2015

Dominic Lipinski/PA

Novak Djokovic celebrates a break of serve against Kevin Anderson during day Seven of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon

A cleaner works on Centre Court ahead of play on day three at Wimbledon on July 1, 2015 in London, England. The 129th tournament to be hosted at Wimbledon is due to run for two weeks from Monday 29th June

Carl Court/Getty Images

A cleaner works on Centre Court ahead of play on day three at Wimbledon on Wednesday in London, England

A member of ground staff updates a fixtures board on day two of Wimbledon tennis tournament on June 30, 2015 in London, England. The 129th tournament to be hosted at Wimbledon is due to run for two weeks from Monday 29th June

Carl Court/Getty Images

A member of ground staff updates a fixtures board on day two of Wimbledon tennis tournament on Tuesday in London, England. The 129th tournament to be hosted at Wimbledon is due to run for two weeks

Serena Williams of U.S.A. reacts during her match against Margarita Gasparyan of Russia at the Wimbledon Tennis Championships in London...Serena Williams of U.S.A. reacts during her match against Margarita Gasparyan of Russia at the Wimbledon Tennis Championships in London, June 29, 2015

Toby Melville/Reuters

Serena Williams of U.S.A. reacts during her match against Margarita Gasparyan of Russia at the Wimbledon Tennis Championships in London on Monday

Malaysia v Vietnam - Men's Singles - Vietnam's Tran Tuan Quynh in action

Singapore SEA Games Organising Committee/Action Images/Reuters

Vietnam’s Tran Tuan Quynh in action during the Malaysia v Vietnam Men’s Singles match in Singapore

France Tennis French Open

David Vincent/AP

Lucie Safarova of the Czech Republic serves the ball to Russia’s Maria Sharapova during their fourth round match of the French Open tennis tournament at the Roland Garros stadium, on Monday