
Katie Ledecky of the U.S. competes during the women's 800m freestyle swimming final at the 17th FINA World Championships in Budapest, Hungary on July 29, 2017. Katie Ledecky won the gold with 8:12.68. (Xinhua/Ding Xu)

Katie Ledecky of the U.S. competes during the women's 800m freestyle swimming final at the 17th FINA World Championships in Budapest, Hungary on July 29, 2017. Katie Ledecky won the gold with 8:12.68. (Xinhua/Ding Xu)