Day 6: Nadal v Berdych (Part 1)

Sue Barker presents coverage of the 2010 ATP World Tour finals, the season-ending tournament contested by the world's eight best players. Sweden's Robin Soderling has again qualified for the event at London's O2 Arena, and will hope to improve on his performance in 2009, when he lost to Juan Martin del Potro in the semi-finals. Commentary from Tim Henman and Andrew Castle.