Sue Barker presents live coverage from the All England Club as the first balls at Wimbledon 2010 are struck. Roger Federer returns to defend the men's singles title he regained last year, while British hopes rest with Andy Murray, who reached the semi-finals 12 months ago, his best result to date. Rafael Nadal missed the chance to defend his men's singles title in 2009 because of injury so the Spaniard will be looking to make amends this year.