HONG KONG'S internationally-renowned lawn bowler Mark McMahon may make the Commonwealth Games his last appearance for the territory. And McMahon, a former world indoor semi-finalist and 1990 Games singles silver medallist, added that one day he is hoping to represent Australia in international competition. The 25-year-old, who learned his bowls in Hong Kong, has spent the past year playing and coaching at the Marylands club in Sydney, Australia. After the Commonwealth Games, McMahon will travel to Hong Kong for a few days before returning to Australia. ''It's Hong Kong's last appearance in the Commonwealth Games and it could be my last appearance for Hong Kong,'' said McMahon, who is partnering his father Bill in the men's pairs competition. ''I've been in Australia for seven months now and I will probably stay there for a while. I really can't see myself playing for Hong Kong again. ''I doubt if I can, but it would be good if I could play for Australia one day.'' McMahon had already based himself in Australia when Hong Kong's team for the Commonwealth Games was announced. But it is not known if the Hong Kong Lawn Bowls Association will continue to regard McMahon as eligible to represent the territory. Bob Gartan, the lawn bowls team manager at the Games and HKLBA official, said McMahon's status has yet to be discussed. McMahon said the prospect of quitting Hong Kong was not related to his Commonwealth Games selection controversy over the selection of teammate Ken Wallis. A favourite to land the singles berth, McMahon was unhappy that the selectors opted for Wallis, the current national champion, as the territory's men's singles representative for the Games. McMahon's absence from the territory has already resulted in the loss of his cherished place in the annual Hong Kong Classic in November. In 1988, McMahon teamed up with Noel Kennedy for the first time and the pair won the Classic with a thrilling final victory over England. Since then, McMahon and Kennedy have been Hong Kong's recognised number one pairs team. But this year, McMahon is unavailable for the Classic, featuring many of the bowlers currently competing in the Commonwealth Games, and Kennedy will instead partner rising youngster Anthony Carstairs. McMahon has been one of Hong Kong's most successful international bowlers over the past five years. In 1989, he reached the semi-finals of the World Indoor Championship in Preston, England. This was followed by his silver medal in the 1990 Auckland Commonwealth Games, when he was beaten by Australian Rob Parrella in the gold medal play-off. His success resulted in a string of invitations to play in big-money tournaments in Britain and Australia. The Australian circuit has proved particularly lucrative for McMahon and was one of the main reasons he headed Down Under. However, the one title that has always eluded him is the Hong Kong Classic Souza singles competition, held annually as a prelude to the main pairs tournament.