Andy Murray focused on ATP World Tour Finals

Andy Murray has revealed that he is focusing all of his attention on winning the ATP World Tour Finals in London at the end of the year.

The British world number three booked his place the annual tournament by reaching the quarter-finals of the US Open.

"It's a key focus for me for the rest of the season and I'll do everything I can to give myself the best chances of winning it," Murray told the ATP's official website.

"The atmosphere there is always special - to win it would be the perfect way to finish the season."

Murray has made the semi-finals of the ATP World Tour Finals three times but has never gone through to the final.