Michael Phelps is interviewed after winning the 100-meter butterfly in the at the Arena Grand Prix swim meet in Charlotte, N.C., Friday, May 16, 2014. Phelps won the race with a time of 52.13. (AP Photo/Nell Redmond)
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Michael Phelps is interviewed after winning the 100-meter butterfly in the at the Arena Grand Prix swim meet in Charlotte, N.C., Friday, May 16, 2014. Phelps won the race with a time of 52.13. (AP Photo/Nell Redmond)
