sain Bolt runs 10.10s 100m into a 0.7m/s headwind to qualify for the Semi-Finals in Daegu.

World record holder Usain Bolt cantered to a win in his 100m heat at the World Athletics Championships in Daegu.

The Jamaican eased up with 30m to go but still beat Dwain Chambers comfortably in a time of 10.10 seconds.

Chambers was second and will be joined in the next round by team-mates Harry Aikines-Aryeetey and Marlon Devonish.