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GWANGJU, SOUTH KOREA - JULY 27: Caeleb Dressel of the United States celebrates after his team setting a new world record of 3:19.40 in the Mixed 4x100m Freestyle Final on day seven of the Gwangju 2019 FINA World Championships at Nambu International Aquatics Centre on July 27, 2019 in Gwangju, South Korea. (Photo by Maddie Meyer/Getty Images)

GWANGJU, SOUTH KOREA - JULY 27: Caeleb Dressel of the United States celebrates after his team setting a new world record of 3:19.40 in the Mixed 4x100m Freestyle Final on day seven of the Gwangju 2019 FINA World Championships at Nambu International Aquatics Centre on July 27, 2019 in Gwangju, South Korea. (Photo by Maddie Meyer/Getty Images)