4 August 2012 Last updated at 21:07

Olympic Swimming: US relay storm to gold with record

The United States Claire Donahue, Rebecca Soni, Dana Vollmer and Missy Franklin break the world record in the women's 4x100m medley relay with a time of three minutes 52.05 seconds to win the gold. Australia claimed the silver with Japan settling for bronze.

Great Britain's squad finished eighth.

Watch Saturday's swimming finals on BBC Sport's Interactive Video Player.

Available to UK users only.