Great Britain won the Olympics' first-ever 4x100 meter mixed medley relay, breaking the world record with a time of 3:37.58
The British were among the favorites to win the event. China took silver and Australia clinched bronze.
Team USA was considered a medal contender ahead of the race, but finished fifth. The Americans' chances were hurt after breaststroke swimmer Lydia Jacoby's goggles fell off.
This was the final medal event for swimming on Saturday in Tokyo.