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Canada's Margaret Macneil celebrates winning the final of the women's 100m butterfly during the swimming competition at the 2019 World Championships at Nambu University Municipal Aquatics Center in Gwangju, South Korea, on July 22, 2019. (Photo by Manan VATSYAYANA / AFP) (Photo credit should read MANAN VATSYAYANA/AFP/Getty Images)

Canada's Margaret Macneil celebrates winning the final of the women's 100m butterfly during the swimming competition at the 2019 World Championships at Nambu University Municipal Aquatics Center in Gwangju, South Korea, on July 22, 2019. (Photo by Manan VATSYAYANA / AFP)        (Photo credit should read MANAN VATSYAYANA/AFP/Getty Images)