United States' Nathan Adrian reacts after winning gold in the...

United States' Nathan Adrian reacts after winning gold in the men's 100-meter freestyle swimming final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London. (Aug. 1, 2012) Credit: AP

LONDON -- Nathan Adrian of the United States won the men's 100-meter freestyle by the smallest of margins at the London Olympics on Wednesday.

Adrian clocked 47.52 seconds to win by 0.01 ahead of world champion James "The Missile" Magnussen of Australia.

Magnussen touched in 47.53 to take the silver medal and Brent Hayden of Canada finished in 47.80 for bronze.

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