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Portugal's Emanuel Silva (R) and Portugal's Joao Ribeiro compete in the Men's Kayak Double (K2) 1000m event at the Lagoa Stadium during the Rio 2016 Olympic Games in Rio de Janeiro on August 17, 2016. / AFP / Damien MEYER (Photo credit should read DAMIEN MEYER/AFP/Getty Images)

Portugal's Emanuel Silva (R) and Portugal's Joao Ribeiro compete in the Men's Kayak Double (K2) 1000m event at the Lagoa Stadium during the Rio 2016 Olympic Games in Rio de Janeiro on August 17, 2016. / AFP / Damien MEYER        (Photo credit should read DAMIEN MEYER/AFP/Getty Images)