Sue Barker introduces live coverage of the first day of Great Britain's Davis Cup semi-final against Australia at the Emirates Arena in Glasgow. The hosts are competing in the last four for the first time in 34 years and they haven't reached the final since 1978. The British team will be led by Andy Murray, who has an outstanding singles record in the Davis Cup - winning 21 of his 23 matches. GB have already upset the odds by knocking out the United States and France en route to the semi-finals. Show less