American swimmer Michael Phelps has become the most decorated Olympian in history.
Olympic Swimmer Michael Phelps
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Michael Phelps competes in the men's 4x200-meter freestyle relay swimming final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, July 31, 2012.
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Michael Phelps waits to receive his silver medal for the men's 200-meter butterfly swimming final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, July 31, 2012.
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Michael Phelps displays his eighth gold medal after the men's 4x100-meter medley relay final at the Beijing 2008 Olympics in Beijing.
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Michael Phelps competes in the 100-meter butterfly at the Indianapolis Grand Prix swimming meet in Indianapolis, March 29, 2012.