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An overview shows South Korea's Cha Dongmin (R) competing against Uzbekistan's Dmitriy Shokin during their men's taekwondo bronze medal bout in the +80kg category as part of the Rio 2016 Olympic Games, on August 20, 2016, at the Carioca Arena 3, in Rio de Janeiro. / AFP / Michael MARINO (Photo credit should read MICHAEL MARINO/AFP/Getty Images)

An overview shows South Korea's Cha Dongmin (R) competing against Uzbekistan's Dmitriy Shokin during their men's taekwondo bronze medal bout in the +80kg category as part of the Rio 2016 Olympic Games, on August 20, 2016, at the Carioca Arena 3, in Rio de Janeiro.  / AFP / Michael MARINO        (Photo credit should read MICHAEL MARINO/AFP/Getty Images)