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June 30, 2016

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Michael Phelps congratulates Ryan Lochte on Lochte's win in the 100-meter butterfly final during the Arena Grand Prix on Thursday, April 24, 2014, in Mesa, Ariz.

Matt York / AP

Michael Phelps congratulates Ryan Lochte on Lochte's win in the 100-meter butterfly final during the Arena Grand Prix on Thursday, April 24, 2014, in Mesa, Ariz.