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Michael Phelps of the U.S. swims in the men's 200m butterfly final during the London 2012 Olympic Games

Michael Phelps of the U.S. is seen underwater as he swims in the men's 200m butterfly final during the London 2012 Olympic Games at the Aquatics Centre July 31, 2012. REUTERS/Michael Dalder/File photo

Michael Phelps vs. Ryan Lochte at Olympic trials

July 2, 2012

Michael Phelps and Ryan Lochte battle it out at the U.S. Olympic swimming trials in Omaha.