FILE - In this Aug. 12, 2016, file photo, United States' Michael Phelps, bottom, and Singapore's Joseph Schooling look at the clock at the end of the men's 100-meter butterfly swimming final at the Summer Olympics in Rio de Janeiro, Brazil. Schooling won his country's first gold medal with an upset victory in the 100-meter butterfly. Phelps finished in a three-way tie for second, giving him a silver to go along with five golds in what was again billed as his final Olympics. (AP Photo/Rebecca Blackwell, File)
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