Team USA win the gold medal in the men's 4x100-meter medley relay, setting a new world record in the process on Sunday morning local time.

Driving the news: American Caeleb Dressel won his fifth Tokyo Games gold medal during the event.

• Dressel had already earned four additional Olympic gold medals in Tokyo, three in individual events and a fourth in the men's 4x100m freestyle relay. He now has a total of seven Olympic gold medals, including two he won in the 2016 Rio de Janeiro Games.

The big picture: The U.S. also won gold in the 2016 Games, breaking an Olympic record at the time. The team was comprised Ryan Murphy, Cody Miller, Michael Phelps and Nathan Adrian.

• Murphy broke the world record for 100-meter backstroke during the relay.

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Editor's note: This a breaking news story. Please check back for updates.