In 2004, the United States and Australia — then swimming’s two powerhouses — faced off at the Summer Olympics in Athens. Four years earlier in Sydney, the American men had lost to the Australian men on their home field in one of the sport’s marquee events, the 4-x-200-meter freestyle relay, a race that the Australians, anchored by the legendary Ian Thorpe, had dominated for seven years.

In Athens, where the American men’s basketball Dream Team played to stunning mediocrity, the message to Team USA’s male swimmers was clear — shut down the Aussies and take back pride of place. The relay team would be led by Michael Phelps — on his way to six gold medals but not yet the supernova Phelps of the Beijing Games four years later — and his friendly rival, Ryan Lochte, who has the second most Olympic swimming medals of any man but at that time was even less of a known quantity. They were joined by Peter Vanderkaay and, swimming the last leg against Thorpe, Klete Keller.

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