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Germany's Frank Staebler (red) wrestles with Serbia's Davor Stefanek in their men's 66kg greco-roman quarter-final match on August 16, 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)

Germany's Frank Staebler (red) wrestles with Serbia's Davor Stefanek in their men's 66kg greco-roman quarter-final match on August 16, 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)

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Serbia's Davor Stefanek celebrates after winning his men's 66kg greco-roman semi-final match against Georgia's Shmagi Bolkvadze on August 16, 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)

Serbia's Davor Stefanek celebrates after winning his men's 66kg greco-roman semi-final match against Georgia's Shmagi Bolkvadze on August 16, 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)

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Serbia's Davor Stefanek celebrates on the podium after winning the gold medal in the men's 66kg greco-roman wrestling event at the Carioca Arena 2 in Rio de Janeiro on August 16, 2016, during the Rio 2016 Olympic Games. / AFP / Jack GUEZ (Photo credit should read JACK GUEZ/AFP/Getty Images)

Serbia's Davor Stefanek celebrates on the podium after winning the gold medal in the men's 66kg greco-roman wrestling event at the Carioca Arena 2 in Rio de Janeiro on August 16, 2016, during the Rio 2016 Olympic Games. / AFP / Jack GUEZ        (Photo credit should read JACK GUEZ/AFP/Getty Images)

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(From L to R) Armenia's silver medallist Migran Arutyunyan, Serbia's gold medallist Davor Stefanek, Georgia's bronze medallist Shmagi Bolkvadze and Azerbaijan's bronze medallist Rasul Chunayev stand on the podium at the end of the men's 66kg greco-roman wrestling event at the Carioca Arena 2 in Rio de Janeiro on August 16, 2016, during the Rio 2016 Olympic Games. / AFP / Jack GUEZ (Photo credit should read JACK GUEZ/AFP/Getty Images)

(From L to R) Armenia's silver medallist Migran Arutyunyan, Serbia's gold medallist Davor Stefanek, Georgia's bronze medallist Shmagi Bolkvadze and Azerbaijan's bronze medallist Rasul Chunayev stand on the podium at the end of the men's 66kg greco-roman wrestling event at the Carioca Arena 2 in Rio de Janeiro on August 16, 2016, during the Rio 2016 Olympic Games. / AFP / Jack GUEZ        (Photo credit should read JACK GUEZ/AFP/Getty Images)