HONG KONG has always been a rich hunting ground for Australia's famous squash playing Martin family, and brothers Rodney and Brett are out to keep up their winning streak in the territory this week. Rodney and Brett won the 1992 and 1993 editions of the Cathay Pacific Unysis Open respectively while sister Michelle has won the Pak Fah Yeow Ladies Open crown for the last two years. The brothers will again pose the major threat to Pakistani world number one Jansher Khan, who had dominated the Hong Kong event for five consecutive years until he failed to defend the title in 1992. Rodney won it in Khan's absence, but proved he was a worthy champion a year later by beating the Pakistani in the semi-final round of the 1993 tournament to set up an all-Martin final against elder brother Brett. But Rodney, 28, who also won the 1986 Hong Kong title before Khan's dominance, sustained a hip injury at the World Open last November and has been struggling to regain his fitness. The 1991 world champion has only played sparingly this year because of the nagging injury and fared poorly at the two major tournaments - the Leekes Welsh Classic and the British Open. He was beaten by England's Chris Walker in the second round in Cardiff and was a first-round loser to Mark Cairns in London. Rodney's world ranking has slipped two places to number five but he can build up on a probable easy start in the Hong Kong tournament, being drawn against a qualifier in the first round. While Rodney has been having a frustrating period, his brother Brett has been enjoying his best squash since picking up his first major title in Hong Kong 12 months ago. Brett has struck a purple patch this year, winning the Leekes Classic and reaching the finals at the British Open and the Tournament of Champions in New York. He comes to the Hong Kong tournament with adrenalin flowing and confidence bubbling, having won the Australian Open only a week ago. The 31-year-old Australian's string of steady performances in the past year saw him catapulted to number two on the world rankings behind Khan. However, he is not making any bold predictions on his chances in Hong Kong and said: ''I'm not playing any better than I was before but I was just doing better. Perhaps I'm just more consistent today.'' Brett's first major test could be against Scotland's fast-rising star Peter Nicol in the quarter-final round. The two have played each other three times this year with Nicol winning in Portugal and Austria but Brett turned the tables on the world number seven in New York four months ago. And just for the record, Brett would probably hope someone will stop top-seed Khan from making the finals - he has never beaten the Pakistani.