Usain Bolt capped a memorable world championships by winning a third gold in Beijing as anchor of Jamaica's 4x100m relay team, while the United States were disqualified to hand China a shock silver.

Sprint king Usain Bolt won his third gold medal of the Games as he helped Jamaica win the men's 4x100 meter relay gold medal, shattering the world record in the process. Bolt, already the Olympic ...

KINGSTON (Reuters) - The banned stimulant oxilofrine would not have given sprinter Asafa Powell an advantage in competition, a toxicology expert told a Jamaica Anti-Doping disciplinary hearing on ...