Usain Bolt has won the men's 100m final at the World Athletics Championships in Moscow.
The Jamaican, who was disqualified from the 2011 final in Daegu, posted a time of 9.78 seconds ahead of America's Justin Gatlin.
Bolt's countryman Nesta Carter clinched the bronze medal.
Meanwhile, Great Britain's James Dasaolu could only finish last with a time of 10.21 seconds.
