Usain Bolt cruises into Olympics 100m final

Olympic champion Usain Bolt wins his heat in a time of 9.87 seconds to qualify for the 100m final at London 2012.

American Ryan Bailey qualifies in second in 9.96, while Britain's Dwain Chambers is fourth in 10.05.

Watch Sunday's athletics on the BBC Sport Interactive Video Player.

Available to UK users only.

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