Tennis

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

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 

Spectators take cover from the rain at the Wimbledon Tennis Championships, in London June 30, 2014.

Max Rossi/Reuters

Spectators take cover from the rain at the Wimbledon Tennis Championships in London

Tennis - 2014 Wimbledon Championships - Day Three - The All England Lawn Tennis and Croquet Club...Andy Murray playing Blaz Rola on day three of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon. PRESS ASSOCIATION Photo. Picture date: Wednesday June 25, 2014. See PA story TENNIS Wimbledon. Photo credit should read: Philip Toscano/PA Wire. RESTRICTIONS: Editorial use only. No video emulation. No false commercial association. No manipulation of images. No use with any unofficial third party logos. No transmission of images to mobile services.

Philip Toscano/PA

Andy Murray playing Blaz Rola on day three of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon

Rafael Nadal of Spain reacts after defeating Martin Klizan of Slovaki in their men's singles tennis match at the Wimbledon Tennis Championships, in London...Rafael Nadal of Spain reacts after defeating Martin Klizan of Slovaki in their men's singles tennis match at the Wimbledon Tennis Championships, in London June 24, 2014.

Suzanne Plunkett/Reuters

Rafael Nadal of Spain reacts after defeating Martin Klizan of Slovaki in their men’s singles tennis match at the Wimbledon Tennis Championships, in London

Tennis - 2014 Wimbledon Championships - Day One - The All England Lawn Tennis and Croquet Club...The order or play is prepared during day one of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon. PRESS ASSOCIATION Photo. Picture date: Monday June 23, 2014. See PA story TENNIS Wimbledon. Photo credit should read: Gareth Fuller/PA Wire. RESTRICTIONS: Editorial use only. No video emulation. No false commercial association. No manipulation of images. No use with any unofficial third party logos. No transmission of images to mobile services.

Gareth Fuller/PA

The order of play is prepared during day one of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club in London 

Workers sweep water off a tarp as rain interrupts a men's singles match between Djokovic of Serbia and Sousa of Portugal at the French Open tennis tournament at the Roland Garros stadium in Paris...Workers sweep water off a tarp as rain interrupts a men's singles match between Novak Djokovic of Serbia and Joao Sousa of Portugal at the French Open tennis tournament at the Roland Garros stadium in Paris May 26, 2014.     REUTERS/Gonzalo Fuentes

Gonzalo Fuentes/Reuters

Workers sweep water off tarpaulin as rain interrupts the men’s singles match between Novak Djokovic of Serbia and Joao Sousa of Portugal at the French Open tennis tournament, Roland Garros stadium, Paris

Gamini Dissanayake, 36, an army soldier and member of Sri Lanka's wheelchair tennis national team serves during a practice session in Colombo May 6, 2014. The Sri Lankan national wheelchair team is made up of active armed forces members who lost their limbs during active duty.

Dinuka Liyanawatte/Reuters

Gamini Dissanayake, 36, an army soldier and member of Sri Lanka’s national wheelchair tennis team, trains in Colombo. The team is made up of active members of the armed forces who lost limbs on duty.

Rafael Nadal of Spain returns the ball to Teymuraz Gabashvili of Russia during the Monte Carlo Masters in Monaco April 16, 2014.

Eric Gaillard/Reuters

Rafael Nadal of Spain returns the ball to Teymuraz Gabashvili of Russia during the Monte Carlo Masters in Monaco

A supporter of the Czech Republic cheers during the quarterfinal of Davis Cup World Group tennis at Ariake Colosseum in Tokyo.

Shizuo Kambayashi/AP

A Czech Republic supporter cheers during the quarter-final of Davis Cup World Group tennis at Ariake Colosseum in Tokyo.

Rafael Nadal of Spain hits a return to Roger Federer of Switzerland during their men's singles semi-final match at the Australian Open 2014 tennis tournament in Melbourne

David Gray/Reuters

Multiple exposure of Rafael Nadal hitting a return to Roger Federer during their men’s singles semi-final match at the Australian Open 2014 in Melbourne on Friday. Nadal won in three sets to go through to the final.

Grigor Dimitrov of Bulgaria is silhouetted as he plays Rafael Nadal of Spain during their quarterfinal at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 22, 2014.

Aijaz Rahi/AP

Grigor Dimitrov of Bulgaria is silhouetted as he plays Rafael Nadal of Spain during their quarter final at the Australian Open tennis championship in Melbourne, Australia

Serena Williams of the U.S. serves to Daniela Hantuchova of Slovakia during their women's singles match at the Australian Open 2014 tennis tournament in Melbourne...Serena Williams of the U.S. serves to Daniela Hantuchova of Slovakia during their women's singles match at the Australian Open 2014 tennis tournament in Melbourne January 17, 2014.

Jason Reed/Reuters

Serena Williams of the US serves to Daniela Hantuchova of Slovakia during their women’s singles match at the Australian Open 2014 tennis tournament in Melbourne. Williams won 6-3 6-3. 

Tennis fans protect themselves from the sun during a first round match at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Jan. 14, 2014.

Aaron Favila/AP

Tennis fans protect themselves from the sun during a first round match at the Australian Open tennis championship in Melbourne, Australia

Novak Djokovic of Serbia signs autographs after his men's singles match against Lukas Lacko of Slovakia at the Australian Open 2014 tennis tournament in Melbourne

David Gray/Reuters

Novak Djokovic of Serbia signs autographs after his men’s singles match against Lukas Lacko of Slovakia at the Australian Open 2014 tennis tournament in Melbourne. Djokovic won 6-3 7-6 (7-2) 6-1.

Blue-tipped fingernails of Williams of the U.S. are seen as she bounces the ball to serve during her women's singles match against Makarova of Russia at the Australian Open 2014 tennis tournament in Melbourne...The blue-tipped fingernails of Venus Williams of the U.S. are seen as she bounces the ball to serve during her women's singles match against Ekaterina Makarova of Russia at the Australian Open 2014 tennis tournament in Melbourne January 13, 2014. REUTERS/Jason Reed

Jason Reed/Reuters

Venus Williams of the US prepares to serve against Ekaterina Makarova of Russia at the Australian Open in Melbourne. 

Williams of the U.S. serves to Cibulkova of Slovakia during their women's singles match at the Brisbane International tennis tournament in Brisbane...Serena Williams of the U.S. serves to Dominika Cibulkova of Slovakia during their women's singles match at the Brisbane International tennis tournament in Brisbane, January 2, 2014. REUTERS/Jason Reed

Jason Reed/Reuters

Serena Williams of the US serves to Dominika Cibulková of Slovakia during their women’s singles match at the Brisbane International tennis tournament. 

Stephens of U.S. serves during her match against Wozniacki of Denmark at China Open tennis tournament in Beijing...Sloane Stephens of the U.S. serves during her match against Caroline Wozniacki of Denmark at the China Open tennis tournament in Beijing October 3, 2013.  REUTERS/Petar Kujundzic

Petar Kujundzic/Reuters

Sloane Stephens of the US serves during her match against Caroline Wozniacki of Denmark at the China Open tennis tournament in Beijing.