2012 U.S. Open tennis tournament

Andy Murray poses with the trophy after beating Novak Djokovic — AP Photo/Charles Krupa

Britain's Andy Murray poses with the trophy after beating Serbia's Novak Djokovic in the championship match at the 2012 US Open tennis tournament, Sept. 10, 2012, in New York. Murray vs. Djokovic was a test of will as much as skill, lasting 4 hours, 54 minutes, tying the record for longest U.S. Open final.

Britain's Andy Murray poses with the trophy after defeating Serbia's Novak Djokovic in the championship match at the U.S. Open tennis tournament, Sept. 10, 2012, in New York. Murray won 7-6 (10), 7-5, 2-6, 3-6, 6-2.

Andy Murray reacts after beating Novak Djokovic — AP Photo/Charles Krupa

Britain's Andy Murray reacts after beating Serbia's Novak Djokovic in the championship match at the 2012 US Open tennis tournament, Sept. 10, 2012, in New York.

Serbia's Novak Djokovic returns a shot to Britain's Andy Murray during the championship match at the 2012 US Open tennis tournament, Sept. 10, 2012, in New York.

Andy Murray returns a shot to Novak Djokovic — AP Photo/Julio Cortez

Britain's Andy Murray, right, returns a shot to Serbia's Novak Djokovic during the championship match at the 2012 US Open tennis tournament, Sept. 10, 2012, in New York.

Andy Murray reacts while playing against Novak Djokovic — AP Photo/Darron Cummings

Britain's Andy Murray reacts while playing against Serbia's Novak Djokovic during the championship match at the 2012 US Open tennis tournament, Sept. 10, 2012, in New York.

Serena Williams holds the championship trophy after beating Victoria Azarenka, of Belarus, in the championship match at the 2012 US Open tennis tournament, Sept. 9, 2012, in New York. Two points from defeat, Williams suddenly regained her composure to come back and win the last four games, beating No. 1-ranked Azarenka 6-2, 2-6, 7-5 for her fourth U.S. Open title and 15th Grand Slam title overall.

Serena Williams reacts after beating Victoria Azarenka, of Belarus, in the championship match at the 2012 US Open tennis tournament, Sept. 9, 2012, in New York.

Tennis fans watch Serena Williams play Victoria Azarenka, of Belarus, during the championship match at the 2012 US Open tennis tournament, Sept. 9, 2012, in New York.

Victoria Azarenka returns a shot to Serena Williams — AP Photo/Kathy Willens

Victoria Azarenka, of Belarus, returns a shot to Serena Williams during the championship match at the 2012 US Open tennis tournament, Sept. 9, 2012, in New York.

A woman struggles with her umbrella as tennis fans take shelter during a rain delay during at the 2012 US Open tennis tournament, Sept. 8, 2012, in New York.

Novak Djokovic of Serbia reacts after beating Spain's David Ferrer during a semifinal match at the 2012 US Open tennis tournament, Sept. 9, 2012, in New York.

Spain's David Ferrer returns a shot to Serbia's Novak Djokovic during a semifinal match at the 2012 US Open tennis tournament, Sept. 9, 2012, in New York. Ferrer lost the match.

Serbia's Novak Djokovic returns a shot to Spain's David Ferrer during a semifinal match at the 2012 US Open tennis tournament, Sept. 9, 2012, in New York.

Britain's Andy Murray reacts after beating Czech Republic's Tomas Berdych in a semifinal match at the 2012 US Open tennis tournament, Sept. 8, 2012, in New York.

Victoria Azarenka, of Belarus, reacts after winning her match against Maria Sharapova, of Russia, during a semifinal match at the 2012 US Open tennis tournament, Sept. 7, 2012, in New York.

Maria Sharapova, of Russia, returns a shot to Victoria Azarenka, of Belarus, during a semifinal match at the 2012 US Open tennis tournament, Sept. 7, 2012, in New York.

Serena Williams returns a shot to Italy's Sara Errani during a semifinal match at the 2012 US Open tennis tournament, Sept. 7, 2012, in New York.

Novak Djokovic celebrates match point during his men's singles quarterfinal — Al Bello/Getty Images

Novak Djokovic of Serbia celebrates match point during his men's singles quarterfinal match against Juan Martin Del Potro of Argentina at the 2012 US Open at USTA Billie Jean King National Tennis Center, Sept. 6, 2012, in New York. Djokovic defeated Del Potro 6-2, 7-6 (3), 6-4, putting the Serb in his 10th consecutive Grand Slam semifinal.

Novak Djokovic reacts after winning the second set against Juan Martin del Potro — AP Photo/Darron Cummings

Novak Djokovic, of Serbia, reacts after winning the second set against Juan Martin del Potro, of Argentina, in a quarterfinal at the U.S. Open tennis tournament, Sept. 6, 2012, in New York.

Novak Djokovic, of Serbia, cheers with the crowd during the second set against Juan Martin del Potro, of Argentina, in the quarterfinal round of play at the U.S. Open tennis tournament, Sept. 6, 2012, in New York.

Serbia's Novak Djokovic plays a point against Argentina's Juan Martin Del Potro during their 2012 US Open men's singles quarterfinals match at the USTA Billie Jean King National Tennis Center in New York, Sept. 6, 2012, in New York.

David Ferrer of Spain reacts after defeating Janko Tipsarevic in five sets in the quarterfinals during the 2012 US Open tennis tournament, Sept. 6, 2012, in New York.

David Ferrer reacts after defeating Janko Tipsarevic — Janko Tipsarevic

David Ferrer of Spain reacts after defeating Janko Tipsarevic in five sets in the quarterfinals during the 2012 US Open tennis tournament, Sept. 6, 2012, in New York.

Spain's David Ferrer returns a shot against Janko Tipsarevic of Serbia in the quarterfinals during the 2012 US Open tennis tournament, Sept. 6, 2012, in New York.

Tomas Berdych raises his arms after beating Roger Federer — AP Photo/Charles Krupa

Tomas Berdych, of the Czech Republic, raises his arms after beating Roger Federer, of Switzerland, 7-6 (1), 6-4, 3-6, 6-3 in a quarterfinal of the U.S. Open tennis tournament, Sept. 5, 2012, in New York.

Tomas Berdych raises his arms after defeating Roger Federer — AP Photo/Charles Krupa

Tomas Berdych, of the Czech Republic, raises his arms after defeating Roger Federer, of Switzerland, in the quarterfinal round of play at the U.S. Open tennis tournament, Sept. 5, 2012. in New York. Berdych won 7-6 (1), 6-4, 3-6, 6-3.

Roger Federer wipes his brow late in the fourth set during his loss to Tomas Berdych — AP Photo/Charles Krupa

Roger Federer, of Switzerland, wipes his brow late in the fourth set during his loss to Tomas Berdych, of the Czech Republic, in the quarterfinal round of play at the U.S. Open tennis tournament, Sept. 5, 2012, in New York. Berdych won 7-6 (1), 6-4, 3-6, 6-3.

Roger Federer tosses the ball on his serve — AP Photo/Charles Krupa

Roger Federer, of Switzerland, tosses the ball on his serve to Tomas Berdych, of the Czech Republic, in the quarterfinal round of play at the U.S. Open tennis tournament, Sept. 5, 2012, in New York.

Maria Sharapova serves to Marion Bartoli — AP Photo/Darron Cummings

Maria Sharapova, of Russia, serves to Marion Bartoli, of France, in the quarterfinals during the 2012 US Open tennis tournament, Sept. 5, 2012, in New York.

Serena Williams chases down a shot from Ana Ivanovic, of Serbia, during a quarterfinal at the U.S. Open tennis tournament, Sept. 5, 2012, in New York.

Andy Murray jogs off the court during a break — AP Photo/Henny Ray Abrams

Andy Murray of Great Britain jogs off the court during a break between sets while playing Marin Cilic of Croatia in the quarterfinals of the 2012 US Open tennis tournament, Sept. 5, 2012, in New York.

Andy Murray throws down his racket while playing Marin Cilic — AP Photo/Henny Ray Abrams

Andy Murray of Great Britain throws down his racket while playing Marin Cilic of Croatia in the quarterfinals of the 2012 US Open tennis tournament, Sept. 5, 2012, in New York.

Andy Roddick drops his racket during his match against Argentina's Juan Martin Del Potro in the quarterfinals during the 2012 US Open tennis tournament, Sept. 5, 2012, in New York.

Andy Roddick reacts during his match with Juan Martin Del Potro — AP Photo/Charles Krupa

Andy Roddick reacts during his match with Argentina's Juan Martin Del Potro in the quarterfinals of the 2012 US Open tennis tournament, Sept. 5, 2012, in New York.

Andy Roddick watches the ball during his match with Argentina's Juan Martin Del Potro in the fourth round of play at the 2012 US Open tennis tournament, Sept. 5, 2012, in New York.

Andy Roddick walks onto the court during his match with Juan Martin Del Potro — AP Photo/Darron Cummings

Andy Roddick walks onto the court during his match with Argentina's Juan Martin Del Potro in the quarterfinals during the 2012 US Open tennis tournament, Sept. 5, 2012, in New York.

Victoria Azarenka reacts after winning her match against Samantha Stosur — AP Photo/Mike Groll

Victoria Azarenka, of Belarus, reacts after winning her match against Samantha Stosur, of Australia, in the quarterfinals of the 2012 US Open tennis tournament, Sept. 4, 2012, in New York.

Victoria Azarenka returns a shot to Samantha Stosur — AP Photo/Kathy Willens

Victoria Azarenka, of Belarus, returns a shot to Samantha Stosur, of Australia, in the quarterfinals of the 2012 US Open tennis tournament, Sept. 4, 2012, in New York.

Andy Roddick returns a shot to Argentina's Juan Martin Del Potro in the fourth round of the 2012 US Open tennis tournament, Sept. 4, 2012, in New York.

Argentina's Juan Martin Del Potro returns a shot to Andy Roddick in the fourth round of play at the 2012 US Open tennis tournament, Sept. 4, 2012, in New York.

Maria Sharapova, of Russia, reacts before resuming her match against Marion Bartoli, of France, in the quarterfinals of the 2012 US Open tennis tournament, Sept. 4, 2012, in New York.

Slovakia's Martin Klizan reacts during his match against Marin Cilic, of Croatia, in the fourth round of play at the 2012 US Open tennis tournament, Sept. 3, 2012, in New York. Klizan lost the match.

Czech Republic's Tomas Berdych returns a shot to Spain's Nicolas Almagro in the fourth round of play at the 2012 US Open tennis tournament, Sept. 3, 2012, in New York.

Serbia's Ana Ivanovic reacts during her match against Bulgaria's Tsvetana Pironkova in the fourth round of play at the 2012 US Open tennis tournament, Sept. 3, 2012, in New York.

Serena Williams returns a shot to Czech Republic's Andrea Hlavackova in the fourth round of play at the 2012 US Open tennis tournament, Sept. 3, 2012, in New York.

Argentina's Leonardo Mayer returns a shot to Argentina's Juan Martin Del Potro in the third round of play at the 2012 US Open tennis tournament, Sept. 2, 2012, in New York.

Maria Sharapova hits a ball into the crowd after defeating Nadia Petrova — AP Photo/Charles Krupa

Maria Sharapova, of Russia, hits a ball into the crowd after defeating Nadia Petrova, of Russia, 6-1, 4-6, 6-4 in the fourth round of play at the U.S. Open tennis tournament, Sept. 2, 2012, in New York.

Samantha Stosur returns a shot to Britain's Laura Robson — AP Photo/Kathy Willens

Samantha Stosur, of Australia, returns a shot to Britain's Laura Robson in the third round of play at the 2012 US Open tennis tournament, Sept. 2, 2012, in New York.

Samantha Stosur, of Australia, serves to Britain's Laura Robson in the third round of play at the 2012 US Open tennis tournament, Sept. 2, 2012, in New York. Stosur won the match.

Andy Roddick reacts during his match against Italy's Fabio Fognini in the third round of play at the 2012 US Open tennis tournament, Sept. 2, 2012, in New York.

Andy Roddick gestures during his match with Fabio Fogniniin the third round of play at the 2012 US Open tennis tournament, Sept. 2, 2012, in New York.

Czech Republic's Andrea Hlavackova returns a shot to Serena Williams in the fourth round of play at the 2012 US Open tennis tournament, Sept. 3, 2012, in New York. Williams won the match.

Steve Johnson returns a shot to Richard Gasquet, of France, in the fourth round of play at the 2012 US Open tennis tournament, Sept. 2, 2012, in New York.

Serena Williams returns a shot against Andrea Hlavackova — Al Bello/Getty Images

Serena Williams of the United States returns a shot against Andrea Hlavackova of Czech Republic during their women's singles fourth round match on Day Eight of the 2012 U.S. Open at USTA Billie Jean King National Tennis Center on September 3, 2012 in the Flushing neighborhood of the Queens borough of New York City.

Serena Williams hits against Andrea Hlavackova — Getty Images/Timmy Clary

Serena Williams of the U.S. hits against Andrea Hlavackova of the Czech Republic during their U.S. Open women's singles match, at the USTA Billie Jean King National Tennis Center in New York, September 3, 2012. The three-time U.S. Open champion defeated Hlavackova 6-0, 6-0.

Andy Roddick celebrates match point — Cameron Spencer/Getty Images

Andy Roddick of the United States celebrates match point during his men's singles third round match against Fabio Fognini of Italy on Day Seven of the 2012 U.S. Open at USTA Billie Jean King National Tennis Center on September 2, 2012 in the Flushing neighborhood of the Queens borough of New York City.

Jo-Wilfried Tsonga of France jumps over the net during his match against Slovakia's Martin Klizan in the second round of play at the 2012 U.S. Open tennis tournament, Thursday, Aug. 30, 2012, in New York. Fifth-seeded Tsonga was upset by Klizan in the second round.

Roger Federer returns a shot to Bjorn Phau — AP Photo/Darron Cummings

Roger Federer, of Switzerland, returns a shot to Bjorn Phau, of Germany, during a match at the U.S. Open tennis tournament, Aug. 30, 2012, in New York.

Serbia's Ana Ivanovic reacts during her match against Sweden's Sofia Arvidsson in the second round of play at the 2012 US Open tennis tournament, Aug. 30, 2012, in New York.

Venus Williams keeps her eyes on the ball as she returns to Angelique Kerber, of Germany, in the second round of play at the U.S. Open tennis tournament, Aug. 30, 2012, in New York.

James Blake celebrates during his match against Marcel Granollers, of Spain, in the second round of play at the U.S. Open tennis tournament, Aug. 30, 2012, in New York. Blake won 6-1, 6-4, 6-2.

Serena Williams looks into the stands during her match against Spain's Maria Jose Martinez Sanchez in the second round of play at the 2012 US Open tennis tournament, Aug. 30, 2012, in New York.

In this photograph made with a slow shutter speed, Serena Williams returns a shot to Spain's Maria Jose Martinez Sanchez in the second round of play at the 2012 US Open tennis tournament, Aug. 30, 2012, in New York.

Sara Errani, of Italy, serves to Vera Dushevina in the second round of play at the U.S. Open tennis tournament, Aug. 30, 2012, in New York.

Serbia's Jelena Jankovic returns a shot to Spain's Lara Arruabarrena-Vecino in the second round of play at the 2012 US Open tennis tournament, Aug. 30, 2012, in New York.

Spain's Carla Suarez Navarro serves to Agnieszka Radwanska, of Poland, in the second round of play at the 2012 US Open tennis tournament, Aug. 30, 2012, in New York.

Laura Robson of Great Britain reacts after beating Kim Clijsters of Belgium in the second round of play at the 2012 US Open tennis tournament, Aug. 29, 2012, in New York.

Kim Clijsters sits on the side of the court after losing to Laura Robson — AP Photo/Mel C. Evans

Kim Clijsters of Belgium sits on the side of the court after losing to Laura Robson of Great Britain in the second round of play at the 2012 US Open tennis tournament, Aug. 29, 2012, in New York.

Kim Clijsters of Belgium looks up after losing to Laura Robson of Great Britain in the second round of play at the 2012 US Open tennis tournament, Aug. 29, 2012, in New York.

Andy Murray, of Britain, celebrates his 6-2, 6-1, 6-3, win over Ivan Dodig, of Croatia, in the second round of play at the U.S. Open tennis tournament, Aug. 29, 2012, in New York.

Maria Sharapova, of Russia, serves to Lourdes Dominguez Lino, of Spain, during a match at the U.S. Open tennis tournament, Aug. 29, 2012, in New York.

Maria Sharapova returns a shot to Lourdes Dominguez Lino — AP Photo/Darron Cummings

Maria Sharapova, of Russia, returns a shot to Lourdes Dominguez Lino, of Spain, during a match at the U.S. Open tennis tournament, Aug. 29, 2012, in New York.

Kim Clijsters of Belgium returns a shot to Laura Robson of Great Britain in the second round of play at the 2012 US Open tennis tournament, Aug. 29, 2012, in New York.

Kim Clijsters of Belgium returns a shot against Laura Robson of Great Britain in the second round of play at the 2012 US Open tennis tournament, Aug. 29, 2012, in New York.

Li Na of China reaches for the ball during her match against Casey Dellacqua of Australia in the second round of play at the 2012 US Open tennis tournament, Aug. 29, 2012, in New York.

David Ferrer reaches for the ball — AP Photo/Mike Groll

David Ferrer of Spain, reaches for the ball during his match against Kevin Anderson of South Africa, in the second round of play at the 2012 US Open tennis tournament, Aug. 29, 2012, in New York.

Juan Monaco of Argentina serves to Spain's Guillermo Garcia-Lopez in the first round of play at the 2012 US Open tennis tournament, Aug. 28, 2012, in New York.

Venus Williams returns a shot to Bethanie Mattek-Sands during the first round of play at the 2012 US Open tennis tournament, Aug. 28, 2012, in New York.

France's Jo-Wilfried Tsonga signs autographs as he leaves the court after winning a match against Slovakia's Karol Beck in the first round of play at the 2012 US Open tennis tournament, Aug. 28, 2012, in New York.

Novak Djokovic eyes a return shot — AP Photo/Darron Cummings

Novak Djokovic, of Serbia, eyes a return shot to Paolo Lorenzi, of Italy, during a match at the U.S. Open tennis tournament, Aug. 28, 2012, in New York.

Tomas Berdych serves to David Goffin, of Belgium, in the first round of play at the 2012 US Open tennis tournament, Aug. 28, 2012, in New York.

Serena Williams looks up during a match against Coco Vandeweghe at the U.S. Open tennis tournament, Aug. 28, 2012, in New York.

Serena Williams returns a shot to Coco Vandeweghe during a match at the U.S. Open tennis tournament, Aug. 28, 2012, in New York.

Jo-Wilifried Tsongas of France serves to Slovakia's Karol Beck in the first round of play at the 2012 US Open tennis tournament, Aug. 28, 2012, in New York.

Andy Roddick returns a shot to Rhyne Williams at the 2012 US Open tennis tournament, Aug. 28, 2012, in New York.

France's Jo-Wilfried Tsonga celebrates after winning his match against Slovakia's Karol Beck in the first round of play at the 2012 US Open tennis tournament, Aug. 28, 2012, in New York.

Andy Roddick returns a shot to Rhyne Williams in the first round of play at the 2012 US Open tennis tournament, Aug. 28, 2012, in New York.

Venus Williams holds her racket while playing Bethanie Mattek-Sands in the first round of play at the 2012 US Open tennis tournament, Aug. 28, 2012, in New York.

Juan Monaco, of Argentina, kisses his racquet during his match against Guillermo Garcia-Lopez, of Spain, in the first round of play at the U.S. Open tennis tournament, Aug. 28, 2012, in New York. Garcia-Lopez won 3-6, 1-6, 6-4, 7-6 (6), 7-6 (3).

Italy's Francesca Schiavone returns a shot to Sloane Stephens in the first round of play at the 2012 US Open tennis tournament, Aug. 28, 2012, in New York.

Roger Federer returns against Donald Young — AP Photo/Charles Krupa

Roger Federer, of Switzerland, returns against Donald Young in the first round of play at the U.S. Open tennis tournament, Aug. 27, 2012, in New York.

Donald Young reacts after losing a point to Roger Federer, of Switzerland, in the first round of play at the U.S. Open tennis tournament, Aug. 27, 2012, in New York.

Kim Clijsters thanks the crowd after defeating Victoria Duval — AP Photo/Charles Krupa

Kim Clijsters, of Belgium, thanks the crowd after defeating Victoria Duval 6-3, 6-1 in the first round of play at the U.S. Open tennis tournament, Aug. 27, 2012, in New York.

Andy Murray serves to Alex Bogomolov Jr., of Russia, in the first round of play at the 2012 US Open Tennis tournament, Aug. 27, 2012, in New York.

Britain's Andy Murray returns a shot to Alex Bogomolov Jr., of Russia, at the 2012 U.S. Open tennis tournament, Aug. 27, 2012, in New York. Murray won the match.

Kim Clijsters, of Belgium, grimaces as she returns to Victoria Duval in the first round of play at the U.S. Open tennis tournament, Aug. 27, 2012, in New York.

Alex Bogomolov Jr. watches a ball hit — AP Photo/Mike Groll

Alex Bogomolov Jr., of Russia, watches a ball hit by Britain's Andy Murray during their match at the 2012 US Open Tennis tournament, Aug. 27, 2012, in New York.

Jamie Hampton hits a ball with the handle of her racket before resuming play against Marion Bartoli, of France, at the 2012 US Open Tennis tournament, Aug. 27, 2012, in New York.

Lucie Safarova, of the Czech Republic, returns a shot to Melanie Oudin in the first round of play at the 2012 US Open tennis tournament, Aug. 27, 2012, in New York.