The ATP announced on Wednesday that the ATP World Tour Finals will be played in London at The O2 through 2015, and that Barclays has extended its title sponsorship of the tournament. The Tour\'s season-ending event, featuring the world\'s best eight singles players and doubles teams, has been played in London since moving there in 2009, with more than 750,000 fans coming to watch the top players in the game over the past three years. Brad Drewett, ATP Executive Chairman and President, said, \"We are very happy to announce the extension of our original commitment in London for a further two years, meaning the Barclays ATP World Tour Finals will be played in London for at least the next three years through 2015. We are very proud of our marquee event, the ultimate showcase of the best of men\'s tennis.\" Over the past 42 years, the tournament has been contested in 14 different world cities from Tokyo to New York to Lisbon to Sydney and most recently Shanghai, before moving to London. Prize money for the tournament continues to increase significantly with this year\'s purse up 10 percent to 5.5 million US dollars and to 6.5 million by 2014.