Saturday marks the end of the high-profile swimming events at the Summer Olympic Games in Rio de Janeiro, with U.S. star Michael Phelps set to swim his last race, the 4X100-meter medley relay. Also Saturday, the Jamaican sprinter known as the world's fastest man, Usain Bolt, began his Olympic events with the first heat of the 100-meter sprint. The 29-year-old Bolt, who has set and broken his own world records for the race, is fully expected to be competing in the finals Sunday night despite a sore hamstring.
Day 8: Rio Olympic Games
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Yana Egorian of Ukraine, left, and Olena Kravatska of Russia compete in a women's team sabre fencing final at the 2016 Summer Olympics in Rio de Janeiro, Brazil, Aug. 13, 2016.
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France forward Marielle Amant, right, looks for the basket defended by Japan forward Ramu Tokashiki during the first half of a women's basketball game at the Youth Center at the 2016 Summer Olympics in Rio de Janeiro, Brazil, Aug. 13, 2016.
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Egypt's Eslam Eissa prays on the court, as Brazil's team celebrate securing a draw, after the men's preliminary handball match between Egypt and Brazil at the 2016 Summer Olympics in Rio de Janeiro, Brazil, Aug. 13, 2016.
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Germany's Christoph Harting prepares a discus with chalk prior to the men's discus throw final during the athletics competitions of the 2016 Summer Olympics at the Olympic stadium in Rio de Janeiro, Brazil, Aug. 13, 2016.
