(AP) Michael Phelps is coming out of retirement, the first step toward swimming at the 2016 Rio Olympics.

The 22-time Olympic medalist will compete for the first time since the 2012 London Olympics at a meet in Mesa, Ariz., on April 24-26.

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USA Swimming said Monday that Phelps is expected to join fellow Olympians Ryan Lochte and Katie Ledecky at the Arena Grand Prix at Skyline Aquatic Center.

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Phelps returned to training last fall and re-entered the U.S. drug-testing program. He has completed his six-month waiting period to be eligible for competition by the U.S. Anti-Doping Agency.

Phelps turns 29 in June and is the winningest and most decorated athlete in Olympic history. He captured 18 gold medals and 22 medals overall at the last three Summer Games. He broke Mark Spitz’s record for a single Olympics by winning eight gold medals at Beijing in 2008.

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