Tennis

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

Rafael Nadal of Spain plays a shot to Quentin Halys of France during their men's singles match at the French Open tennis tournament at the Roland Garros stadium in Paris

Pascal Rossignol/Reuters

Rafael Nadal of Spain plays a shot to Quentin Halys of France during their men’s singles match at the French Open tennis tournament at the Roland Garros stadium in Paris, France, on Tuesday

Maria Sharapova from Russia returns the ball during her Madrid Open tennis tournament match against Caroline Garcia from France in Madrid, Spainon Wednesday

Andres Kudacki/AP

Maria Sharapova from Russia returns the ball during her Madrid Open tennis tournament match against Caroline Garcia from France in Madrid, Spain, on Wednesday

Mattek-Sands of the U.S. and Safarova of Czech Republic celebrate defeating Zheng of China and Chan of Taiwan to win their women's doubles final match at the Australian Open tennis tournament in Melbourne

Brandon Malone/Reuters

Bethanie Mattek-Sands (R) of the U.S. and Lucie Safarova (L) of Czech Republic celebrate defeating Zheng Jie of China and Chan Yung-Jan of Taiwan to win their women’s doubles final match at the Australian Open tennis tournament in Melbourne on Friday.

Murray of Britain serves to Berdych of Czech Republic during men's singles semi-final match at the Australian Open 2015 tennis tournament in Melbourne...Andy Murray of Britain serves to Tomas Berdych of Czech Republic during men's singles semi-final match at the Australian Open 2015 tennis tournament in Melbourne January 29, 2015.

Carlos Barria /Reuters

Andy Murray of Britain serves to Tomas Berdych of Czech Republic during men’s singles semi-final match at the Australian Open 2015 tennis tournament in Melbourne on Thursday

Serena of the U.S. celebrates defeating Cibulkova of Slovakia to win their women's singles quarter-final match at the Australian Open 2015 tennis tournament in Melbourne...Serena Williams of the U.S. celebrates defeating Dominika Cibulkova of Slovakia to win their women's singles quarter-final match at the Australian Open 2015 tennis tournament in Melbourne January 28, 2015.     REUTERS/Carlos Barria (AUSTRALIA  - Tags: SPORT TENNIS)

Carlos Barria/Reuters

Serena Williams of the U.S. celebrates defeating Dominika Cibulkova of Slovakia to win their women’s singles quarter-final match at the Australian Open 2015 tennis tournament in Melbourne, Australia

Benjamin Becker of Germany signs autographs after defeating Lleyton Hewitt of Australia in their men's singles second round match at the Australian Open.

Issei Kato/Reuters

Benjamin Becker of Germany signs autographs after defeating Lleyton Hewitt of Australia in their second round singles match at the Australian Open in Melbourne

Jerzy Janowicz of Poland reacts after defeating Gael Monfils of France in their men's singles second round match at the Australian Open 2015 tennis tournament in Melbourne

Thomas Peter/Reuters

Jerzy Janowicz of Poland drops his racquet after defeating Gael Monfils of France in the men’s singles second round match at the Australian Open 2015 tennis tournament in Melbourne

Sharapova of Russia serves to compatriot Panova during their women's singles match at the Australian Open 2015 tennis tournament in Melbourne

Carlos Barria/Reuters

Maria Sharapova of Russia serves to compatriot Alexandra Panova during the women’s singles second-round match at the Australian Open 2015 tennis tournament in Melbourne on Wednesday. Sharapova defeated Panova to win the match.

Kristina Mladenovic of France serves to Sabine Lisicki of Germany during their first round match at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 19, 2015. (AP Photo/Lee Jin-man)

Lee Jin-man/AP

Kristina Mladenovic of France serves to Sabine Lisicki of Germany during their first round match at the Australian Open Tennis Championships in Melbourne, Australia 

Mayor of London Boris Johnson joins  some of world's best wheelchair tennis players outside City Hall in London, as they demonstrate their skills ahead of the forthcoming NEC Wheelchair Tennis Masters in Birmingham. PRESS ASSOCIATION Photo. Picture date: Monday November 24, 2014.

Steve Parsons/PA

Mayor of London Boris Johnson joins some of world’s best wheelchair tennis players outside City Hall in London, as they demonstrate their skills ahead of the forthcoming NEC Wheelchair Tennis Masters in Birmingham

Nadal of Spain returns a shot to Gasquet of France during their men's singles match at the China Open tennis tournament in Beijing

Petar Kujundzic/Reuters

Rafael Nadal of Spain returns a shot to Richard Gasquet of France during their men’s singles match at the China Open tennis tournament in Beijing on Tuesday

Serena Williams of the U.S. serves during her women's singles match against Silvia Soler-Espinosa of Spain at the China Open tennis tournament in Beijing...Serena Williams of the U.S. serves during her women's singles match against Silvia Soler-Espinosa of Spain at the China Open tennis tournament in Beijing September 29, 2014.

Petar Kujundzic/Reuters

Serena Williams of the US serves during her singles match against Spain’s Silvia Soler-Espinosa at the China Open tennis tournament in Beijing on Monday.

A fan yawns as he watches the match between Kei Nishikori, of Japan, and Milos Raonic, of Canada, during the fourth round of the 2014 U.S. Open tennis tournament Tuesday, Sept. 2, 2014, in New York. (AP Photo/Darron Cummings)

Darron Cummings/AP

A fan yawns as he watches the match between Kei Nishikori, of Japan, and Milos Raonic, of Canada, during the fourth round of the 2014 U.S. Open tennis tournament on Tuesday. 

Fans on Murray Mount enjoy the sun as they watch the action on a big screen during day eleven of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon. PRESS ASSOCIATION Photo. Picture date: Thursday July 3, 2014.

Jonathan Brady/PA

Fans on Murray Mount enjoy the sun as they watch the action on a big screen during day eleven of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon

Great Britain's Andy Murray celebrates a point against Bulgaria's Grigor Dimitrov during day ten of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon. PRESS ASSOCIATION Photo. Picture date: Wednesday July 2, 2014.

John Walton/PA

Great Britain’s Andy Murray celebrates a point against Grigor Dimitrov of Bulgaria during their quarter-final match in the Wimbledon Championships. Murray went on to lose in straight sets