Michael Phelps makes post-retirement debut

Associated Press
Michael Phelps dries off after warm ups prior to competing in the 100-meter butterfly during the Arena Grand Prix, Thursday, April 24, 2014, in Mesa, Ariz. It is Phelps' first competitive event after a nearly two-year retirement. (AP Photo/Matt York)

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Michael Phelps’ retirement only lasted a couple of years before the swimming stud had to get back into the pool. The 22-time Olympic medalist is in Arizona for his first post-retirement competition. Phelps will be competing in three events at the Arena Grand Prix starting Thursday.

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