CORRECTS FIRST NAME TO IBTIHAJ FROM UBRIHAJ - Ibtihaj Muhammad from United States, celebrates after winning against Olena Kravatska from Ukraine, during the women's saber individual fencing event at the 2016 Summer Olympics in Rio de Janeiro, Brazil, Monday, Aug. 8, 2016. (AP Photo/Vincent Thian)
Bahamas' Shaunae Miller dives across the finish line ahead of United States' Allyson Felix to win the gold medal in the 400 meter finals during the athletics competitions of the 2016 Summer Olympics at the Olympic stadium in Rio de Janeiro, Brazil, Monday, Aug. 15, 2016.
(AP Photo/Michael Sohn). United States' Michael Phelps competes in a men's 200-meter butterfly heat during the swimming competitions at the 2016 Summer Olympics, Monday, Aug. 8, 2016, in Rio de Janeiro, Brazil.
Monday, August 8: Guanabara Bay - A boy throws a plastic bottle into Guanabara Bay, upstream of the area where the sailing competition will be held at the Rio 2016 Olympic Games in Rio de Janeiro on Aug. 7, 2016.