TEENAGER Tam Kai-chuen, making his debut as the number one singles player for Hong Kong, won his match but failed to save the territory from a 4-1 defeat by Australia at the World Championships in Lausanne, Switzerland, yesterday. Tam took over from William Wong Wai-lap as the territory's top singles player when the three-times national champion decided to step down from high-level competition recently. The aggressive 19-year-old kept Hong Kong's hopes alive in their Group Four match against Australia by defeating Paul Stevenson 15-10, 11-15, 15-10 in the second rubber to level the scores at 1-1. However, Hong Kong's celebrations were short-lived as Australia won the remaining three matches. 'Australia are the strongest team in the group and I knew we faced an uphill task against them, especially since our team are undergoing a transition period following the recent retirement of several key members,' coach Chan Chi-choi said. 'Tam Kai-chuen played very well in winning his match and we put up a great fight in all the doubles matches, and I'm not disappointed with the overall performance of the team. 'It's an encouraging result and has given us confidence for our matches against New Zealand and Austria. Our aim is to remain in Group Four and we must win at least one match to achieve that goal.' The top team in the group earn promotion to Group Three while the last team will be relegated. China beat England 4-1 after losing the first rubber and Denmark beat Thailand by the same margin. Earlier, Sweden looked set for promotion into Group One with a 4-1 victory over Japan and can clinch a return with victories over Russia and the Netherlands.