Kerron Clement of the U.S. bites his gold medal during the awards ceremony for the men's 400 metres hurdles at the world athletics championships at the Olympic stadium in Berlin August 19, 2009. Kerron Clement of the U.S. won the gold, ahead of Javier Culson of Puerto Rico who won silver and Bershawn Jackson of the U.S.who won bronze. REUTERS/Wolfgang Rattay (GERMANY)