Olympics day fourteen - in pictures

Dominic Demeritte of the Bahamas prepares to compete in the heat of the men's 4 x 100m relay.

Great Britain's Dwain Chambers (left) chases the rest after an illegal baton change with Marlon Devonish.

Frances synchronized swimming team perform their free routine.

US runner Angelo Taylor rests on a surprised official after running in a first round heat of the 4 x 400m relay.

British Open Laser gold medal winner Ben Ainslie has his boat lifted out of the water by supporters.

Reuben Kosgei of Kenya wins the men's 3000m steeplechase.

Britain's Audley Harrison comfortably beat Italy's Paolo Vidoz in his semi-final.