Sue Barker introduces the action from London's O2 Arena, venue for the 2010 ATP World Tour finals. The tournament brings together the world's eight best players, who will compete for the last honour on the calendar. Spain's Rafael Nadal will begin as one of the favourites after claiming three grand slams this year, including a maiden victory at the US Open. Swiss star Roger Federer, who won this year's Australian Open, is chasing a fifth World Tour title. Serbian Novak Djokovic, who won the tournament in 2008, will be hoping for a repeat performance, while British hopes rest with Andy Murray. Commentary from Tim Henman and Andrew Castle
