Greene wins 400m hurdles heat

World champion Dai Greene gets his quest for gold underway with a comfortable win in his 400m hurdles heat in London.

The 26-year-old eased home in 48.98 to book his place in the semi-finals.

Greene, Great Britain's athletics captain, says he enjoyed the noisy reception from the home crowd and it did not affect his focus.

Available to UK users only.

Watch the men's 400m hurdles heats in full here using the BBC's interactive video player.

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