In 2000, 15-year-old Michael Phelps made his Olympic debut in Sydney, finishing fifth in the 200-meter butterfly.
In 2004, he attempted eight events in Athens. The result: eight medals, six of them gold.
In 2008, he tried the same program in Beijing. China's lucky number is eight, and so is Phelps', as he won them all.
In last year's World Championships, he showed a few signs of slipping. He won four events, finished second in two others and was third in a relay.
This year, Phelps is trying seven events. How's he doing?