Tennis Player Profiles
(1) Novak Djokovic
The Wimbledon champion goes into the ATP World Tour Finals as the man to beat as he looks to end the year as world No 1.
(2) Roger Federer
Federer has rediscovered his old form which has helped him climb back up to second in the world rankings.
(3) Stan Wawrinka
Now a grand slam winner, the Swiss is looking for more major success in London following his Australian Open triumph.
(4) Kei Nishikori
Japan's rising star will hope to regain the momentum he was gathering after reaching the US Open final.
(5) Andy Murray
The Brit has experienced a difficult year but has rediscovered the form which helped him become a grand slam champion.
(6) Tomas Berdych
The Czech continues to lurk around the fringes of the top five but is yet to claim that elusive big win.
(7) Milos Raonic
The Canadian made his breakthrough this year after long being regarded as a very exciting prospect.
(8) Marin Cilic
The Croatian will take part in his first ATP World Tour Finals courtesy of his surprise success at the US Open.