Michael Phelps of the United States greets his family, sister's Whitney and Hilary and mother Debbie in the stands as he is surrounded by photographers after receiving his gold medal in the Men's 4x100 Medley Relay at the National Aquatics Centre during Day 9 of the Beijing 2008 Olympic Games on August 17, 2008 in Beijing, China. The United States team set a new world record with a time of 3:29:34.