Canada's Summer McIntosh, of Toronto, celebrates with her gold medal won in the 200m women's individual medley final during the 2024 Summer Olympic Games, in Nanterre, France, Saturday, Aug. 3, 2024.

Canada's Summer McIntosh celebrates with her gold medal won in the 200m women's individual medley final during the 2024 Summer Olympic Games, in Nanterre, France, Saturday, Aug. 3, 2024.

United States' Michael Phelps, left, and South Africa's Chad Le Clos prepare to compete in the final of the men's 200-meter butterfly at the 2016 Summer Olympics, Aug. 9, 2016, in Rio de Janeiro.

1984 — The Summer Olympics open in Los Angeles with a record 140 nations competing. The Soviet Union and 13 Communist allies, including Cuba and East Germany, boycott the games. 1987 — Laura Davies ...

Stats, facts and more on the athletes to watch for this year. — -- More than 11,000 athletes will be competing at the 2016 Summer Olympics in Rio. Here are stats, facts and more on 28 ...