Usain Bolt breezes through World Athletics Championships 100m heat

Usain Bolt comfortably wins his 100m heat to secure a place in Sunday's semi-finals at the 2013 World Championships in Moscow, Russia.

The Olympic champion, who was disqualified from the 100m final the 2011 World Championships in Daegu, won with a time of 10.07 seconds.

Afterwards he paid tribute to Mo Farah who won gold in the 10,000m earlier in the day.

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