Al Bello/Getty Images(RIO DE JANEIRO) — Michael Phelps has won his 20th career Olympic gold medal.
The 31-year-old star swimmer won gold Tuesday night for the 200-meter Butterfly Final, a rematch from the London 2012 Olympics when South African Chad Le Clos won the gold over Phelps.
Phelps is also expected to race in the 4x200m Freestyle Relay.
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