VETERAN Chong Siao-chin, 35, who has not played at top international level for four years, makes a surprise return to the Hong Kong team for the World Championships being held in Hamilton, Canada, from September 30 to October 4. Chong, the last Hong Kong men's player to win a medal at a multi-sports event, having taken a bronze medal at the Asian Games in Seoul in 1986, has been named included in a seven-strong team in the under-71 kilograms category. In sharp contrast, the other two men in the squad - 17-year-old Wat Chi-kwan (60 kilos) and Chong Gong-keung (65 kilos) - will be facing the biggest challenge of their young careers. ''Chong must be the oldest player we've sent to a major championships, but it was decided at an executive meeting that selection should be determined by the result of the trials and level of experience, so he has earned his place,'' said Henry Shing Yuen-hing, chairman of the Hong Kong Judo Association. ''Even though he is a veteran now, he is probably the most hard-working player I've ever seen in Hong Kong. Even when he wasn't selected, he still worked very hard. He has never given up.'' Wat, of the Judokan club, earned his place with a shock victory over Alex Lee Kan early this month in the Hong Kong Open, which doubled as a selection trial. It was an impressive result against Lee, 32, who has won the Open 60 kilos title the last five years in a row, but Wat's only international experience has been an appearance in last year's Interport. Chong, of the Far East club, had the main obstacle to his hopes of selection cleared when 32-year-old two-time Olympian Ryan Au Woon-yiu pulled out of the Open through injury. He appeared in the East Asian Games in Shanghai earlier this year and the KanoCup in Japan last November, although he was soundly beaten both times. There were no surprises in the women's team, with Open winners Cheng Wah-fong (Far East), at 48 kilos, Chan Mei-ling (Judokan) at 52 kilos, Cat Law Lai-wah (Chung Wah) at 56 kilos and Mo Ching-hui (Judokan) at 61 kilos all being selected. The team leave Hong Kong on September 27 and return on October 4.