Despite suffering from chronic asthma and repeated injury, this American swimmer is one of the greatest champions of his generation. Having already become the world champion in the 400 metre freestyle and Olympic champion over the same distance at the Atlanta Games in 1996, Dolan successfully defended his title at the Sydney Games four years later.However, the economics student failed in his attempt to win a third medal in the 200 metres, where he was beaten by Italy's Rosolino.