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Bulgaria's Vladimir Vladimirov Dubov (red) wrestles with Romania's Ivan Guidea in their men's 57kg freestyle round of 16 match on August 19, 2016, during the wrestling event of the Rio 2016 Olympic Games at the Carioca Arena 2 in Rio de Janeiro. / AFP / Jack GUEZ (Photo credit should read JACK GUEZ/AFP/Getty Images)

Bulgaria's Vladimir Vladimirov Dubov (red) wrestles with Romania's Ivan Guidea in their men's 57kg freestyle round of 16 match on August 19, 2016, during the wrestling event of the Rio 2016 Olympic Games at the Carioca Arena 2 in Rio de Janeiro. / AFP / Jack GUEZ        (Photo credit should read JACK GUEZ/AFP/Getty Images)