LAS VEGAS - APRIL 4: Olympic gold medalist Michael Phelps hits a tee shot during the first round of ARIA Resort & Casino's 12th annual Michael Jordan Celebrity Invitational golf tournament at Shadow ... more 
LAS VEGAS - APRIL 4: Olympic gold medalist Michael Phelps hits a tee shot during the first round of ARIA Resort & Casino's 12th annual Michael Jordan Celebrity Invitational golf tournament at Shadow Creek on April 4, 2013 in North Las Vegas, Nevada. (Photo by Isaac Brekken/Getty Images for Michael Jordan Celebrity Invitational) less 
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Getty Images | Photo By Isaac Brekken / Getty Images for Michael Jordan
Thu, Apr 4, 2013 7:33 PM EDT