4 August 2012 Last updated at 23:43

Olympic Swimming: Michael Phelps ends with 18th gold medal

Michael Phelps, the greatest ever Olympian, ends his career with 18 gold medals after he and his team-mates win gold in the men's 4x100m relay at the Aquatics Centre in London.

It was Phelps's last ever swim and so ends a glittering career in which he has won 18 golds, two silvers and two bronzes to add to his 26 World Championship golds, six silvers and a bronze, 44 golds in total.

Japan took the silver with the bronze going to Australia.

Great Britain finished fourth.

Watch full replay on BBC Sport's Interactive Video Player

Available to UK users only.