Andy Murray reflects on successful 2012

Great Britain's Andy Murray reflects on the most successful year of his career, in which he won the US Open and became Olympic champion.

The world number three tells BBC Sport's Karthi Gnanasegaram the ''number one ranking isn't that high on my priorities" at the moment, but adds that his focus remains on adding to his first major victory by winning the Australian Open next year.

Watch Andy Murray's opening match of the ATP World Tour Finals against Tomas Berdych - Monday 5 November 1345 GMT, BBC Two and online.