Francis Obikwelu was born in Nigeria and, wearing a Nigerian vest, won double gold at the World Junior Championship in Sydney in 1996,
followed by a silver and bronze at the senior World Championships in Athens and Seville. At 16 he moved to Lisbon and became a Portuguese citizen. He won silver for Portugal in the 100m at the 2004 Athens Olympics. He announced his retirement after a disappointing Beijing Games, but changed his mind after becoming European indoor champion in 2011.