Volunteers and fellow riders examine a rider who fell down during men's semi-final game of the 2007 UCI BMX Supercross World Cup, one of the test events for the 2008 Olympic Games at Laoshan Bicycle Moto Cross (BMX) Venue in Beijing August 21, 2007. Donny Robinson from the United States won the final game 36.949 seconds. [chinadaily.com.cn]