TENNIS-ATP-FINALS
Britain's Andy Murray walks on court to play Serbia's Novak Djokovic during their group A singles match in the round robin stage on the third day of the ATP World Tour Finals tennis tournament in London on November 7, 2012. AFP PHOTO / GLYN KIRK (Photo credit should read GLYN KIRK/AFP/Getty Images)
TENNIS-ATP-FINALS
Britain's Andy Murray walks on court to play Serbia's Novak Djokovic during their group A singles match in the round robin stage on the third day of the ATP World Tour Finals tennis tournament in London on November 7, 2012. AFP PHOTO / GLYN KIRK (Photo credit should read GLYN KIRK/AFP/Getty Images)
ATP World Tour Finals - Day Three
LONDON, ENGLAND - NOVEMBER 07: Andy Murray of Great Britain walks out onto court prior to the men's singles match against Novak Djokovic of Serbia on day three of the ATP World Tour Finals at the at O2 Arena on November 7, 2012 in London, England. (Photo by Clive Brunskill/Getty Images)
ATP World Tour Finals - Day Three
LONDON, ENGLAND - NOVEMBER 07: Novak Djokovic of Serbia walks out onto court prior to the men's singles match against Andy Murray of Great Britain on day three of the ATP World Tour Finals at the at O2 Arena on November 7, 2012 in London, England. (Photo by Clive Brunskill/Getty Images)
ATP World Tour Finals - Day Three
LONDON, ENGLAND - NOVEMBER 07: Novak Djokovic of Serbia walks out onto court prior to the men's singles match against Andy Murray of Great Britain on day three of the ATP World Tour Finals at the at O2 Arena on November 7, 2012 in London, England. (Photo by Clive Brunskill/Getty Images)
ATP World Tour Finals - Day Three
LONDON, ENGLAND - NOVEMBER 07: Andy Murray of Great Britain walks out onto court prior to the men's singles match against Novak Djokovic of Serbia on day three of the ATP World Tour Finals at the at O2 Arena on November 7, 2012 in London, England. (Photo by Clive Brunskill/Getty Images)
TENNIS-ATP-FINALS
Britain's Andy Murray walks on court to play Serbia's Novak Djokovic during their group A singles match in the round robin stage on the third day of the ATP World Tour Finals tennis tournament in London on November 7, 2012. AFP PHOTO / GLYN KIRK (Photo credit should read GLYN KIRK/AFP/Getty Images)
ATP World Tour Finals - Day Three
LONDON, ENGLAND - NOVEMBER 07: Novak Djokovic of Serbia walks out onto court prior to the men's singles match against Andy Murray of Great Britain on day three of the ATP World Tour Finals at the at O2 Arena on November 7, 2012 in London, England. (Photo by Julian Finney/Getty Images)
TENNIS-ATP-FINALS
Britain's Andy Murray walks on court to play Serbia's Novak Djokovic during their group A singles match in the round robin stage on the third day of the ATP World Tour Finals tennis tournament in London on November 7, 2012. AFP PHOTO / GLYN KIRK (Photo credit should read GLYN KIRK/AFP/Getty Images)
TENNIS-ATP-FINALS
Serbia's Novak Djokovic walks on court to play Britain's Andy Murray during their group A singles match in the round robin stage on the third day of the ATP World Tour Finals tennis tournament in London on November 7, 2012. AFP PHOTO / GLYN KIRK (Photo credit should read GLYN KIRK/AFP/Getty Images)
TENNIS-ATP-FINALS
Serbia's Novak Djokovic walks on court to play Britain's Andy Murray during their group A singles match in the round robin stage on the third day of the ATP World Tour Finals tennis tournament in London on November 7, 2012. AFP PHOTO / GLYN KIRK (Photo credit should read GLYN KIRK/AFP/Getty Images)
TENNIS-ATP-FINALS
Serbia's Novak Djokovic walks on court to play Britain's Andy Murray during their group A singles match in the round robin stage on the third day of the ATP World Tour Finals tennis tournament in London on November 7, 2012. AFP PHOTO / GLYN KIRK (Photo credit should read GLYN KIRK/AFP/Getty Images)
TENNIS-ATP-FINALS
Serbia's Novak Djokovic walks on court to play Britain's Andy Murray during their group A singles match in the round robin stage on the third day of the ATP World Tour Finals tennis tournament in London on November 7, 2012. AFP PHOTO / GLYN KIRK (Photo credit should read GLYN KIRK/AFP/Getty Images)
TENNIS-ATP-FINALS
Serbia's Novak Djokovic prepares himself for his group A singles match against Britain's Andy Murray in the round robin stage on the third day of the ATP World Tour Finals tennis tournament in London on November 7, 2012. AFP PHOTO / CARL COURT (Photo credit should read CARL COURT/AFP/Getty Images)
ATP World Tour Finals - Day Three
LONDON, ENGLAND - NOVEMBER 07: Andy Murray of Great Britain hits a backhand during the men's singles match against Novak Djokovic of Serbia on day three of the ATP World Tour Finals at the at O2 Arena on November 7, 2012 in London, England. (Photo by Clive Brunskill/Getty Images)
TENNIS-ATP-FINALS
Britain's Andy Murray returns against Serbia's Novak Djokovic during their group A singles match in the round robin stage on the third day of the ATP World Tour Finals tennis tournament in London on November 7, 2012. AFP PHOTO / GLYN KIRK (Photo credit should read GLYN KIRK/AFP/Getty Images)
ATP World Tour Finals - Day Three
LONDON, ENGLAND - NOVEMBER 07: Novak Djokovic of Serbia hits a forehand during the men's singles match against Andy Murray of Great Britain on day three of the ATP World Tour Finals at the at O2 Arena on November 7, 2012 in London, England. (Photo by Clive Brunskill/Getty Images)
TENNIS-ATP-FINALS
Britain's Andy Murray returns against Serbia's Novak Djokovic during their group A singles match in the round robin stage on the third day of the ATP World Tour Finals tennis tournament in London on November 7, 2012. AFP PHOTO / GLYN KIRK (Photo credit should read GLYN KIRK/AFP/Getty Images)
TENNIS-ATP-FINALS
Britain's Andy Murray returns against Serbia's Novak Djokovic during their group A singles match in the round robin stage on the third day of the ATP World Tour Finals tennis tournament in London on November 7, 2012. AFP PHOTO / CARL COURT (Photo credit should read CARL COURT/AFP/Getty Images)
ATP World Tour Finals - Day Three
LONDON, ENGLAND - NOVEMBER 07: Andy Murray of Great Britain reacts during the men's singles match against Novak Djokovic of Serbia on day three of the ATP World Tour Finals at the at O2 Arena on November 7, 2012 in London, England. (Photo by Clive Brunskill/Getty Images)
ATP World Tour Finals - Day Three
LONDON, ENGLAND - NOVEMBER 07: Andy Murray of Great Britain hits a forehand during the men's singles match against Novak Djokovic of Serbia on day three of the ATP World Tour Finals at the at O2 Arena on November 7, 2012 in London, England. (Photo by Clive Brunskill/Getty Images)
ATP World Tour Finals - Day Three
LONDON, ENGLAND - NOVEMBER 07: Novak Djokovic of Serbia hits a forehand during the men's singles match against Andy Murray of Great Britain on day three of the ATP World Tour Finals at the at O2 Arena on November 7, 2012 in London, England. (Photo by Clive Brunskill/Getty Images)
TENNIS-ATP-FINALS
Britain's Andy Murray reacts after a game against Serbia's Novak Djokovic during their group A singles match in the round robin stage on the third day of the ATP World Tour Finals tennis tournament in London on November 7, 2012. AFP PHOTO / CARL COURT (Photo credit should read CARL COURT/AFP/Getty Images)
TENNIS-ATP-FINALS
Serbia's Novak Djokovic returns against Britain's Andy Murray during their group A singles match in the round robin stage on the third day of the ATP World Tour Finals tennis tournament in London on November 7, 2012. AFP PHOTO / GLYN KIRK (Photo credit should read GLYN KIRK/AFP/Getty Images)
Tennis - Barclays ATP World Tour Finals - Day Three - O2 Arena
Serbia's Novak Djokovic in action against Great Britain's Andy Murray during the Barclays ATP World Tour Finals at the O2 Arena, London.
Tennis - Barclays ATP World Tour Finals - Day Three - O2 Arena
Great Britain's Andy Murray in action against Serbia's Novak Djokovic during the Barclays ATP World Tour Finals at the O2 Arena, London.
The Huffington Post UK | By Samuel Luckhurst Posted: 07/11/2012 16:38 GMT Updated: 07/11/2012 16:42 GMT