ATP is the governing body of the men's professional tennis circuits - the ATP World Tour, the ATP Challenger Tour and the ATP Champions Tour. With 63 tournaments in 32 countries, the ATP World Tour showcases the finest male athletes competing in the world’s most exciting venues. From Australia to Europe and the Americas to Asia, the stars of the ATP World Tour battle for prestigious titles at Grand Slams (non ATP members), ATP World Tour Masters 1000, ATP World Tour 500 and ATP World Tour 250 events. At the end of the season the world’s top 8 ranked men’s singles players and top 8 doubles teams, based on their performance throughout the year, will qualify to compete in the season’s climax - the Barclays ATP World Tour Finals. To be held at London’s O2 arena, the event will officially crown the 2009 ATP World Tour Champion and determine the final South African Airways 2009 ATP Rankings. For more information, please visit www.ATPWorldTour.com.