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Spain's Marcus Walz competes in the Men's Kayak Single (K1) 1000m final at the Lagoa Stadium during the Rio 2016 Olympic Games in Rio de Janeiro on August 16, 2016. / AFP / Damien MEYER (Photo credit should read DAMIEN MEYER/AFP/Getty Images)

Spain's Marcus Walz competes in the Men's Kayak Single (K1) 1000m final at the Lagoa Stadium during the Rio 2016 Olympic Games in Rio de Janeiro on August 16, 2016. / AFP / Damien MEYER        (Photo credit should read DAMIEN MEYER/AFP/Getty Images)

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Spain's Marcus Walz celebrates after the Men's Kayak Single (K1) 1000m final at the Lagoa Stadium during the Rio 2016 Olympic Games in Rio de Janeiro on August 16, 2016. / AFP / Damien MEYER (Photo credit should read DAMIEN MEYER/AFP/Getty Images)

Spain's Marcus Walz celebrates after the Men's Kayak Single (K1) 1000m final at the Lagoa Stadium during the Rio 2016 Olympic Games in Rio de Janeiro on August 16, 2016. / AFP / Damien MEYER        (Photo credit should read DAMIEN MEYER/AFP/Getty Images)

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Spain's Marcus Walz celebretes on the Podium of the Men's Kayak Single (K1) 1000m final at the Lagoa Stadium during the Rio 2016 Olympic Games in Rio de Janeiro on August 16, 2016. / AFP / Jeff PACHOUD (Photo credit should read JEFF PACHOUD/AFP/Getty Images)

Spain's Marcus Walz celebretes on the Podium of the Men's Kayak Single (K1) 1000m final at the Lagoa Stadium during the Rio 2016 Olympic Games in Rio de Janeiro on August 16, 2016. / AFP / Jeff PACHOUD        (Photo credit should read JEFF PACHOUD/AFP/Getty Images)

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RIO DE JANEIRO, BRAZIL - AUGUST 16: [L-R] Silver medalist Josef Dostal of the Czech Republic, gold medalist Marcus Walz of Spain, and bronze medalist Roman Anoshkin of Russia celebrate during the medal ceremony during the Men's Kayak Single 1000m Final A on Day 11 of the Rio 2016 Olympic Games at the Lagoa Stadium on August 16, 2016 in Rio de Janeiro, Brazil. (Photo by Tom Pennington/Getty Images)

RIO DE JANEIRO, BRAZIL - AUGUST 16:  [L-R] Silver medalist Josef Dostal of the Czech Republic, gold medalist Marcus Walz of Spain, and bronze medalist Roman Anoshkin of Russia celebrate during the medal ceremony during the Men's Kayak Single 1000m Final A on Day 11 of the Rio 2016 Olympic Games at the Lagoa Stadium on August 16, 2016 in Rio de Janeiro, Brazil.  (Photo by Tom Pennington/Getty Images)