Swimming-U.S. sets world record in mixed relay

KAZAN, Russia, Aug 8 (Reuters) - The United States set a world record in the final of the mixed 4x100 metres freestyle at the world swimming championships on Saturday. The American team of Ryan Lochte, Nathan Adrian, Simone Manuel and Missy Franklin set a combined time of three minutes 23.05 seconds to win the gold medal. Their time bettered the previous world record of 3:23.29 set by Australia last year. (Reporting by Rod Gilmour; Editing by Julian Linden)