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OMAHA, NE - JUNE 29: Michael Phelps of the United States reacts after winning the final heat for the Men's 200 Meter Butterfly during Day Four of the 2016 U.S. Olympic Team Swimming Trials at CenturyLink Center on June 29, 2016 in Omaha, Nebraska. (Photo by Tom Pennington/Getty Images)

OMAHA, NE - JUNE 29: Michael Phelps of the United States reacts after winning the final heat for the Men's 200 Meter Butterfly during Day Four of the 2016 U.S. Olympic Team Swimming Trials at CenturyLink Center on June 29, 2016 in Omaha, Nebraska. (Photo by Tom Pennington/Getty Images)
Getty Images

Getty Images Sport Tom Pennington