Andy Murray came from a set down to defeat Thomas Berdych in his opening match at the ATP World Tour Finals in London.

The US Open champion defeated the Czech 3-6 6-3 6-4 at the O2 Arena in his first match of Group A, which also features Novak Djokovic and Jo-Wilfried Tsonga.

Murray does not have a great record against Berdych having won only three of their previous seven meetings, but despite an early setback he delighted the home crowd with a three-set win.

Murray said: "It was very tough from the start. Every time I've played him this year it's been tough and it's been the same today. You need to treat it like a knockout and I managed to get the win today."

The Scot also admitted he was still to receive his US Open trophy even though he won the final major of the year almost two months ago.

"I won't have it until December, can you believe it?" he added.

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  • ATP World Tour Finals - Day One

    LONDON, ENGLAND - NOVEMBER 05: Andy Murray of Great Britain stretches for a forehand during the men's singles match against Tomas Berdych of Czech Republic on day one of the ATP World Tour Finals at the O2 Arena on November 5, 2012 in London, England. (Photo by Clive Brunskill/Getty Images)

  • ATP World Tour Finals - Day One

    LONDON, ENGLAND - NOVEMBER 05: Andy Murray of Great Britain walks out onto the court prior to the men's singles match against Tomas Berdych of Czech Republic on day one of the ATP World Tour Finals at the O2 Arena on November 5, 2012 in London, England. (Photo by Clive Brunskill/Getty Images)

  • ATP World Tour Finals - Day One

    LONDON, ENGLAND - NOVEMBER 05: Andy Murray of Great Britain reacts during the men's singles match against Tomas Berdych of Czech Republic on day one of the ATP World Tour Finals at the O2 Arena on November 5, 2012 in London, England. (Photo by Clive Brunskill/Getty Images)

  • ATP World Tour Finals - Day One

    LONDON, ENGLAND - NOVEMBER 05: Andy Murray of Great Britain hits a backhand during the men's singles match against Tomas Berdych of Czech Republic on day one of the ATP World Tour Finals at the O2 Arena on November 5, 2012 in London, England. (Photo by Julian Finney/Getty Images)

  • ATP World Tour Finals - Day One

    LONDON, ENGLAND - NOVEMBER 05: Tomas Berdych of Czech Republic serves during the men's singles match against Andy Murray of Great Britain on day one of the ATP World Tour Finals at the O2 Arena on November 5, 2012 in London, England. (Photo by Clive Brunskill/Getty Images)

  • ATP World Tour Finals - Day One

    LONDON, ENGLAND - NOVEMBER 05: Andy Murray of Great Britain hits a forehand during the men's singles match against Tomas Berdych of Czech Republic on day one of the ATP World Tour Finals at the O2 Arena on November 5, 2012 in London, England. (Photo by Clive Brunskill/Getty Images)

  • ATP World Tour Finals - Day One

    LONDON, ENGLAND - NOVEMBER 05: Tomas Berdych of Czech Republic hits a forehand during the men's singles match against Andy Murray of Great Britain on day one of the ATP World Tour Finals at the O2 Arena on November 5, 2012 in London, England. (Photo by Matthew Lewis/Getty Images for Barclays)

  • ATP World Tour Finals - Day One

    LONDON, ENGLAND - NOVEMBER 05: Andy Murray of Great Britain reacts during the men's singles match against Tomas Berdych of Czech Republic on day one of the ATP World Tour Finals at the O2 Arena on November 5, 2012 in London, England. (Photo by Clive Brunskill/Getty Images)

  • TENNIS-ATP-FINALS

    Britain's Andy Murray returns against Czech Republic's Tomas Berdych during their group A singles match in the round robin stage on the first day of the ATP World Tour Finals tennis tournament in London on November 5, 2012. AFP PHOTO / CARL COURT (Photo credit should read CARL COURT/AFP/Getty Images)

  • Tennis - Barclays ATP World Tour Finals - Day One - O2 Arena

    Great Britain's Andy Murray in action against Czech Republic's Tomas Berdych during the Barclays ATP World Tour Finals at the O2 Arena, London.

  • Tennis - Barclays ATP World Tour Finals - Day One - O2 Arena

    Great Britain's Andy Murray reacts during his match against the Czech Republic's Tomas Berdych during the Barclays ATP World Tour Finals at the O2 Arena, London.

  • ATP World Tour Finals - Day One

    LONDON, ENGLAND - NOVEMBER 05: Andy Murray of Great Britain hits a forehand during the men's singles match against Tomas Berdych of Czech Republic on day one of the ATP World Tour Finals at the O2 Arena on November 5, 2012 in London, England. (Photo by Clive Brunskill/Getty Images)