May 17th, 2009 | Aaron Peirsol survey
Aaron Peirsol beats Michael Phelps at 100m backstroke
Michael Phelps loses his first swimming championship this year to Aaron Peirsol, who beat him at the finish line of the men's 100 meter back swim at the Charlotte UltraSwim Saturday.
Aaron Peirsol is the world-record holder and two-time Olympic gold medalist of the sport. He beat Phelps doing 53.32'' with phelps finishing at 53.79''.
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