Hong Kong Tennis Association (HKTA) officials are uncertain if Sven Koehler will be eligible for the territory at the All-China Games in Shanghai from October 5-17. The Hong Kong-born Koehler returns next month after completing his studies in the United States. But questions remain about eligibility. Are the All-China Games open to anyone who is Hong Kong-born, or are only Chinese allowed to participate? The HKTA is unsure. 'We don't know what the requirements are,' said Janet Hardisty, senior HKTA official. 'We have been asked to submit a team and we will. But we must first clarify what the eligibility is.' Sports Development Board (SDB) chief executive Andrew Ma was unavailable for comment yesterday. The SDB has been handed the task of organising the Hong Kong contingent for the Shanghai Games. Koehler, 22, is of mixed parentage. His mother is French and his father is German. The left-handed player has represented the territory at two Davis Cup tournaments.