Sue Barker presents highlights from the opening Grand Slam of 2009. With the tournament taking place at such an early stage in the season, there is plenty of potential for upsets and the men's singles looks excitingly open. Roger Federer is chasing a record-equalling 14th Grand Slam title, but the Swiss player lost his cloak of invincibility in 2008 and started the season out of the world number one position for the first time in five years. Rafael Nadal took that top spot off his rival but the Spaniard has never made it beyond the semi-finals in Melbourne, while last year's champion Novak Djokovic saw his form dip after landing his first major. British hopes will be high after Andy Murray's sensational 2008, which saw him reach the final of the US Open. The ladies' singles also promises to be an open event, with four different women winning the four Grand Slam singles titles last year. With commentary from Chris Bailey, Sam Smith and John Lloyd.