Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Questions Remain on Venus Williams' Health VOA News 07 January 2011 American tennis player Venus Williams serves against Li Na of China in the third days of the Hong Kong Classic exhibition tournament, 07 Jan 2011 Photo: AP American tennis player Venus Williams serves against Li Na of China in the third days of the Hong Kong Classic exhibition tournament, 07 Jan 2011 Health issues seem to still be a concern for five-time Wimbledon tennis champion Venus Williams. The injury-stricken American star crashed to a second defeat in as many days in Hong Kong Friday. Those losses leave her fitness in question as she prepares for the first Grand Slam event of the year, the Australian Open which begins January 17. The 30-year-old Williams was seen clutching her stomach as she was beaten in straight sets by Chinese ace Li Na (6-3, 7-6) at the World Team Challenge exhibition tournament. Asked about the apparent problem in a post-match press conference, she appeared to avoid the question, saying she tried her best and just pushed herself to play her best tennis. Last year Williams suffered a nagging left knee injury that forced her into a long lay-off after losing to eventual champion Kim Clijsters in the U.S. Open semi-finals in September. She had not played before that since being defeated in the Wimbledon quarter-finals in June.