
Katie Ledecky of the United States competes during the women's 1500m freestyle swimming final at the 17th FINA Aquatics World Championships held in Budapest, Hungary on July 25, 2017. (Xinhua/Ding Xu)

Katie Ledecky of the United States competes during the women's 1500m freestyle swimming final at the 17th FINA Aquatics World Championships held in Budapest, Hungary on July 25, 2017. (Xinhua/Ding Xu)