Dwain Chambers wins 100m heat

Former drugs cheat Dwain Chambers has won his 100m heat in a season's best time of 10.02 seconds - faster than Usain Bolt's qualifying time.

The crowd greeted his appearance with a huge roar of approval.

wain Chambers in the Men's 100m Heats
wain Chambers in the Men's 100m Heats Credit: Mike Egerton/PA Wire

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Bolt sets golden record

Jamaican sprinter Usain Bolt successfully defended his 100m men's Olympic title on Sunday, and in the process, set a new Olympic record.