Jamaica's Usain Bolt crosses the finish line to win the gold in the men's 200-meter final during the 2008 Summer Olympics in Beijing. Anja Niedringhaus/AP hide caption

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Kristin Armstrong won Olympic gold in the cycling time trial the day before she turned 43. Tim de Waele/Corbis via Getty Images hide caption

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Olympic Athletes Prove That Older Doesn't Have To Mean Slower

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Anita Alvarez and Mariya Koroleva compete in the women's duets synchronized swimming technical routine preliminary on Monday in Rio de Janeiro. Koroleva has suffered several concussions over the years. Al Bello/Getty Images hide caption

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When Swimmers Get Out Of Sync, The Result Can Be A Kick In The Head

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Michelle Kasold of the U.S. leaves the pitch as Germany's players celebrate their win in a women's quarterfinal field hockey match at the Rio 2016 Summer Olympics. Manan Vatsyayana/AFP/Getty Images hide caption

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At the 1936 Olympics, 18 black athletes went to Berlin as part of the U.S. team. Pictured here are (left to right, rear) high jumpers Dave Albritton and Cornelius Johnson; hurdler Tidye Pickett; sprinter Ralph Metcalfe; boxer Jim Clark; sprinter Mack Robinson. In front: weightlifter John Terry (left); long jumper John Brooks. Bettmann Archive/Getty Images hide caption

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Black U.S. Olympians Won In Nazi Germany Only To Be Overlooked At Home

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U.S. women's soccer player Crystal Dunn (in white) contends with Amel Majri of France during their match at Mineirao Stadium in Belo Horizonte, Brazil. The U.S. earned a 1-0 victory in the the Group G first-round meeting in the Rio Summer Olympics tournament. Pedro Vilela/Getty Images hide caption

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Fencer Ibtihaj Muhammad is set to become the first U.S. athlete to compete in the Olympics while wearing a hijab. Damian Dovarganes/AP hide caption

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An American Muslim Fencer Lunges Into U.S. Olympic History In Rio

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U.S. swimmer Katie Ledecky holds up her gold medal after winning the women's 800-meter freestyle swimming final at the Aquatics Centre in the Olympic Park during the 2012 Summer Games in London. Lee Jin-man/AP hide caption

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Frank Deford: Olympic Swimmer Ledecky Is This Century's Perfect 10

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American Frank Shorter grabs a drink from a table while running through Munich in the 1972 Olympic marathon, which he won. AP hide caption

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For Olympian Frank Shorter, Running Was An Escape From A Troubled Home

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