Photos: Laugh, sweat and cry of Rio Olympics Day-1

Florian Vogel of Germany in action during the Men's 400m Freestyle of the Rio 2016 Olympic Games Swimming events at Olympic Aquatics Stadium at the Olympic Park in Rio de Janeiro, Brazil, 06 August 2016. / EPA-Yonhap

Argentina's Paula Pareto (blue) competes with South Korea's Jeong Bokyeong during their women's -48kg judo contest gold medal match of the Rio 2016 Olympic Games in Rio de Janeiro on August 6, 2016. / AFP-Yonhap

Emese Szasz (L) of Hungary in action against Nozomi Sato (R) of Japan during the women's Epee individual quarter finals of the Rio 2016 Olympic Games Fencing events at the Carioca Arena 3 in the Olympic Park in Rio de Janeiro, Brazil, 06 August 2016. / EPA-Yonhap

United States' Casey Patterson, right, and Jacob Gibb work together against Qatar during a men's beach volleyball match at the 2016 Summer Olympics in Rio de Janeiro, Brazil, Saturday, Aug. 6, 2016. / AP-Yonhap

United State's Nico Hernandez, right, fights Italy's Manuel Cappai during a men's light flyweight 49-kg preliminary boxing match at the 2016 Summer Olympics in Rio de Janeiro, Brazil, Saturday, Aug. 6, 2016. / AP-Yonhap

Chen Feng of Singapore competes against Finland's Benedek Olah during their men's table tennis match at the 2016 Summer Olympics in Rio de Janeiro , Brazil, Saturday, Aug. 6, 2016. / AP-Yonhap

United States' Melissa Gonzalez, right, challenges with Argentina's Carla Rebecchi, center, during a women's field hockey match at 2016 Summer Olympics in Rio de Janeiro, Brazil, Saturday, Aug. 6, 2016. / AP-Yonhap

Kohei Uchimura of Japan performs on the parallel bars during the Men's qualification for the Rio 2016 Olympic Games Artistic Gymnastics events at the Rio Olympic Arena in Barra da Tijuca, Rio de Janeiro, Brazil, 06 August 2016. / EPA-Yonhap

The Olympic beach volleyball arena is seen in an overall view while Russia plays Netherlands during a men's beach volleyball match at the 2016 Summer Olympics in Rio de Janeiro, Brazil, Saturday, Aug. 6, 2016. / AP-Yonhap

Gold medalist Emese Szasz, center, of Hungary, leaps onto the podium during a medal ceremony for the women's individual epee fencing match at the 2016 Summer Olympics in Rio de Janeiro, Brazil, Saturday, Aug. 6, 2016. Szasz is joined by silver medal winner Rossella Fiamingo, left, of Italy, and bronze medalist Sun Yiwen, of China. / AP-Yonhap