Olympic 2012 swimming: China's Sun Yang wins men's 400m freestyle gold

Watch as China's Sun Yang comes close to breaking the world record on his way to winning the men's 400m freestyle final at the London Aquatics Centre.

The 20-year-old is the first Chinese male swimmer to earn gold and secures victory with an Olympic record.

Watch the full race on BBC Sport's Interactive Video Player.

Available to UK users only.