RIO DE JANEIRO, BRAZIL - AUGUST 20: Peter Sagan of Slovakia practices on the Mountain Bike course on Day 15 of the Rio 2016 Olympic Games at the Mountain Bike Centre on August 20, 2016 in Rio de Janeiro, Brazil. (Photo by Bryn Lennon/Getty Images)
RIO DE JANEIRO, BRAZIL - AUGUST 20: Peter Sagan of Slovakia practices on the Mountain Bike course on Day 15 of the Rio 2016 Olympic Games at the Mountain Bike Centre on August 20, 2016 in Rio de Janeiro, Brazil. (Photo by Bryn Lennon/Getty Images)