U.S. women’s medley relay, in final race of worlds, sets record to win gold-medal battle

A challenging week for the United States swimming team ended with one of the most electric races of the week at the world championships. The U.S. women’s 4×100-meter medley relay team on Sunday let out all the frustration from a meet hampered by a stomach illness that had spread throughout the team, setting a world record to beat the Australians and clinch the gold-medal title in the final race of the swimming program at the World Aquatics Championships. The U.S. and Australia entered the race i