LONDON, ENGLAND - JULY 05: Andy Murray of Great Britain celebrates victory during the Gentlemen's Singles semi-final match against Jerzy Janowicz of Poland on day eleven of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2013 in London, England. (Photo by Julian Finney/Getty Images) ( 173045007 )
Andy Murray of Britain, right, serves to Jerzy Janowicz of Poland, left, during their Men's singles semifinal match at the All England Lawn Tennis Championships in Wimbledon, London, Friday, July 5, 2013. (AP Photo/Alastair Grant) ( Britain Wimbledon Tennis )
Britain's Andy Murray (R) shakes hands with Poland's Jerzy Janowicz (L) after Murray's victory in their men's singles semi-final match on day eleven of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 5, 2013. Murray won 6-7, 6-4, 6-4, 6-3. CARL COURT/AFP/Getty Images ( 521168229 )
LONDON, ENGLAND - JULY 05: Spectators celebrate Andy Murray of Great Britain's win in the men's singles semi final match against Jerzy Janowicz of Poland on day eleven of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2013 in London, England. (Photo by Peter Macdiarmid/Getty Images) ( 173044832 )
Poland's Jerzy Janowicz reacts after hitting a shot long against Britain's Andy Murray in their men's singles semi-final match on day eleven of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 5, 2013. ADRIAN DENNIS/AFP/Getty Images ( 521167164 )
LONDON, ENGLAND - JULY 05: Novak Djokovic of Serbia plays a backhand during the Gentlemen's Singles semi-final match against Juan Martin Del Potro of Argentina on day eleven of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2013 in London, England. (Photo by Clive Brunskill/Getty Images) ( 172884222 )
Serbia's Novak Djokovic (L) talks and shakes hands with Argentina's Juan Martin Del Potro (R) following Djokovic's victory in their men's singles semi-final match on day eleven of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 5, 2013. Djokovic won 7-5, 4-6, 7-6, 6-7, 6-3. CARL COURT/AFP/Getty Images ( 521161877 )
Serbia's Novak Djokovic celebrates beating Argentina's Juan Martin Del Potro during their men's singles semi-final match on day eleven of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 5, 2013. Djokovic won 7-5, 4-6, 7-6, 6-7, 6-3. ADRIAN DENNIS/AFP/Getty Images ( 521161634 )
LONDON, ENGLAND - JULY 05: Spectators wearing Union flag t-shirts look at a board showing the order of play on day eleven of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2013 in London, England. (Photo by Peter Macdiarmid/Getty Images) ( 172830690 )
LONDON, ENGLAND - JULY 05: Spectators watch a giant TV screen showing Andy Murray of Great Britain's men's singles semi final match against Jerzy Janowicz of Poland on day eleven of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club at Murray Mount on July 5, 2013 in London, England. (Photo by Peter Macdiarmid/Getty Images) ( 172909201 )
LONDON, ENGLAND - JULY 05: Andy Murray of Great Britain plays a backhand during the Gentlemen's Singles semi-final match against Jerzy Janowicz of Poland on day eleven of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2013 in London, England. (Photo by Clive Brunskill/Getty Images) ( 172889508 )
Poland's Jerzy Janowicz returns during his men's singles semi-final match against Britain's Andy Murray on day eleven of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 5, 2013. TOBY MELVILLE/AFP/Getty Images ( 521166590 )
Andy Murray of Britain tries to play a return to Jerzy Janowicz of Poland during their Men's singles semifinal match at the All England Lawn Tennis Championships in Wimbledon, London, Friday, July 5, 2013. (AP Photo/Kirsty Wigglesworth) ( Britain Wimbledon Tennis )
Jerzy Janowicz of Poland hits a return to Andy Murray of Britain during their men's semi-final tennis match at the Wimbledon Tennis Championships, in London July 5, 2013. REUTERS/Stefan Wermuth ( TENNIS-WIMBLEDON/ )
Andy Murray of Britain reacts after a point to Jerzy Janowicz of Poland during their Men's singles semifinal match at the All England Lawn Tennis Championships in Wimbledon, London, Friday, July 5, 2013. (AP Photo/Kirsty Wigglesworth) ( Britain Wimbledon Tennis )
LONDON, ENGLAND - JULY 05: Andy Murray of Great Britain speaks with Chair Umpire Jake Garner after Championships' referee Andrew Jarrett announced the decision to close the roof during the Gentlemen's Singles semi-final match against Jerzy Janowicz of Poland on day eleven of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2013 in London, England. (Photo by Julian Finney/Getty Images) ( 172996642 )
LONDON, ENGLAND - JULY 05: Fans of Andy Murray of Great Britain hold up a banner which reads "Will You Murray Me?" during his men's singles semi final match against Jerzy Janowicz of Poland on day eleven of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2013 in London, England. (Photo by Peter Macdiarmid/Getty Images) ( 172893581 )
LONDON, ENGLAND - JULY 05: Pippa Middleton applauds as she watches the Gentlemen's Singles semi-final match between Andy Murray of Great Britain and Jerzy Janowicz of Poland on day eleven of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2013 in London, England. (Photo by Mike Hewitt/Getty Images) ( 172908972 )
Poland's Jerzy Janowicz celebrates winning the first set against Britain's Andy Murray in their men's singles semi-final match on day eleven of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 5, 2013. ADRIAN DENNIS/AFP/Getty Images ( 521164432 )
Andy Murray of Britain plays a return to Jerzy Janowicz of Poland during their Men's singles semifinal match at the All England Lawn Tennis Championships in Wimbledon, London, Friday, July 5, 2013. (AP Photo/Kirsty Wigglesworth) ( Britain Wimbledon Tennis )
LONDON, ENGLAND - JULY 05: Andy Murray of Great Britain speaks with Jerzy Janowicz of Poland at the net after their Gentlemen's Singles semi-final match on day eleven of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2013 in London, England. (Photo by Clive Brunskill/Getty Images) ( 173044853 )
Tennis fans hold up a Scottish flag as they watch on the big screen at Murray Mount Britain's Andy Murray play against Poland's Jerzy Janowicz in their men's singles semi-final match on day eleven of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 5, 2013. GLYN KIRK/AFP/Getty Images ( 521166626 )
LONDON, ENGLAND - JULY 05: Sabine Lisicki of Germany signs autographs for fans after a practice session on day eleven of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2013 in London, England. (Photo by Dennis Grombkowski/Getty Images) ( 172840756 )
LONDON, ENGLAND - JULY 05: Sabine Lisicki of Germany laughs as she talks with Barbara Rittner, captain of the German Fed Cup team during a practice session on day eleven of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2013 in London, England. (Photo by Dennis Grombkowski/Getty Images) ( 172840961 )
LONDON, ENGLAND - JULY 05: Juan Martin Del Potro of Argentina talks with Novak Djokovic of Serbia during the Gentlemen's Singles semi-final match on day eleven of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2013 in London, England. (Photo by Clive Brunskill/Getty Images) ( 172883403 )
Argentina's Juan Martin Del Potro serves against Serbia's Novak Djokovicduring their men's singles semi-final match on day eleven of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 5, 2013. ADRIAN DENNIS/AFP/Getty Images ( 521159504 )
Novak Djokovic of Serbia plays a return to Juan Martin Del Potro of Argentina during their Men's singles semifinal match at the All England Lawn Tennis Championships in Wimbledon, London, Friday, July 5, 2013. (AP Photo/Jonathan Brady, Pool) ( Britain Wimbledon Tennis )
Argentina's Juan Martin Del Potro returns against Serbia's Novak Djokovicduring their men's singles semi-final match on day eleven of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 5, 2013. CARL COURT/AFP/Getty Images ( 521159507 )
LONDON, ENGLAND - JULY 05: Novak Djokovic of Serbia plays a forehand during the Gentlemen's Singles semi-final match against Juan Martin Del Potro of Argentina on day eleven of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2013 in London, England. (Photo by Dennis Grombkowski/Getty Images) ( 172888889 )
LONDON, ENGLAND - JULY 05: Juan Martin Del Potro of Argentina dives to volley the ball during the Gentlemen's Singles semi-final match against Novak Djokovic of Serbia on day eleven of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2013 in London, England. (Photo by Clive Brunskill/Getty Images) ( 172855344 )
Serbia's Novak Djokovic lies on the floor after diving to return against Argentina's Juan Martin Del Potro during their men's singles semi-final match on day eleven of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 5, 2013. JONATHAN BRADY/AFP/Getty Images ( 521160996 )
Argentina's Juan Martin Del Potro celebrates breaking the serve of Serbia's Novak Djokovic in the second set in their men's singles semi-final match on day eleven of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 5, 2013. CARL COURT/AFP/Getty Images ( 521156959 )
Serbia's Novak Djokovic dives as he returns against Argentina's Juan Martin Del Potro during their men's singles semi-final match on day eleven of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 5, 2013. CARL COURT/AFP/Getty Images ( 521158926 )
Juan Martin del Potro of Argentina prepares to drop the ball over the net, after it bounced off the top of the net onto his side of the court in his men's semi-final tennis match against Novak Djokovic of Serbia at the Wimbledon Tennis Championships, in London July 5, 2013. REUTERS/Stefan Wermuth ( TENNIS-WIMBLEDON/ )
Spectators watch in the crowd as Argentina's Juan Martin Del Potro plays Serbia's Novak Djokovic in the first men's singles semi-final match on day eleven of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 5, 2013. ADRIAN DENNIS/AFP/Getty Images ( 521155883 )
Juan Martin Del Potro of Argentina eyes the ball as he plays a return to Novak Djokovic of Serbia during their Men's singles semifinal match at the All England Lawn Tennis Championships in Wimbledon, London, Friday, July 5, 2013. (AP Photo/Jonathan Brady, Pool) ( Britain Wimbledon Tennis )
LONDON, ENGLAND - JULY 05: Novak Djokovic of Serbia celebrates match point during the Gentlemen's Singles semi-final match against Juan Martin Del Potro of Argentina on day eleven of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2013 in London, England. (Photo by Clive Brunskill/Getty Images) ( 172889094 )
LONDON, ENGLAND - JULY 05: Novak Djokovic of Serbia and Juan Martin Del Potro of Argentina leave Centre Court after their Gentlemen's Singles semi-final match against Juan Martin Del Potro of Argentina on day eleven of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2013 in London, England. (Photo by Clive Brunskill/Getty Images) ( 172889042 )
Serbia's Novak Djokovic (L) embraces Argentina's Juan Martin Del Potro (R) after Djokovic's victory in their men's singles semi-final match on day eleven of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 5, 2013. Djokovic won 7-5, 4-6, 7-6, 6-7, 6-3. CARL COURT/AFP/Getty Images ( 521162412 )
Spectators turn to look at Britain's Andy Murray as France's Marion Bartoli trains in the background on day eleven of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 5, 2013, ahead of the women's singles final match on July 6. ADRIAN DENNIS/AFP/Getty Images ( 521153951 )
France's Marion Bartoli laughs as she does an exercise with a rugby ball during a training session on day eleven of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 5, 2013, ahead of the women's singles final match on July 6. ADRIAN DENNIS/AFP/Getty Images ( 521153978 )
Germany's Sabine Lisicki poses with fans after training on day eleven of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 5, 2013, ahead of her women's singles final match on July 6. GLYN KIRK/AFP/Getty Images ( 521157692 )
Japan's Shuko Aoyama (2nd L) and South Africa's Chanelle Scheepers (R) congratulate China's Peng Shuai and Taiwan's Hsieh Su-Wei after they won their ladies doubles semi-final match on day eleven of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 5, 2013. GLYN KIRK/AFP/Getty Images ( 521159360 )
Japan's Shuko Aoyama (L) and South Africa's Chanelle Scheepers play against China's Peng Shuai and Taiwan's Hsieh Su-Wei during their ladies doubles semi-final match on day eleven of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 5, 2013. GLYN KIRK/AFP/Getty Images ( 521158997 )
Japan's Shuko Aoyama (2nd R) and South Africa's Chanelle Scheepers (R) play against China's Peng Shuai and Taiwan's Hsieh Su-Wei during their ladies doubles semi-final match on day eleven of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 5, 2013. GLYN KIRK/AFP/Getty Images ( 521159498 )