Adrian wins men's 100m freestyle gold

America's Nathan Adrian wins gold in the men's 100m freestyle by 0.01 seconds ahead of Australia's world champion James Magnussen.

In a thrilling race, the 23-year-old was third at 50m but then turned on the power to pip the pre-race favourite in 47.52 seconds.

Canada's world silver medallist Brent Hayden finished third.

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