Rafaela Silva secured the hosts' first gold medal of Rio 2016 ©Getty Images

"Photo_Gallery"

The Brazilian overcame Sumiya Dorjsuren in the final of the women's under 57kg category ©Getty Images
The Brazilian overcame Sumiya Dorjsuren in the final of the women's under 57kg category ©Getty Images
Kenzo Shirai inspired Japan to the gold medal in the men's artistic gymnastics team final ©Getty Images
Kenzo Shirai inspired Japan to the gold medal in the men's artistic gymnastics team final ©Getty Images
Colombia's Oscar Figueroa was visibly emotional after he secured gold in the men's 62kg event ©Getty Images
Colombia's Oscar Figueroa was visibly emotional after he secured gold in the men's 62kg event ©Getty Images
Australia beat New Zealand to seal the first-ever Olympic rugby sevens gold medal ©Getty Images
Australia beat New Zealand to seal the first-ever Olympic rugby sevens gold medal ©Getty Images
Chinese pair Chen Aisen and Lin Yue won the men's 10m synchronised platform title ©Getty Images
Chinese pair Chen Aisen and Lin Yue won the men's 10m synchronised platform title ©Getty Images
Yana Egorian of Russia beat world champion and compatriot Sofia Veliskaya in the final of the women's sabre ©Getty Images
Yana Egorian of Russia beat world champion and compatriot Sofia Veliskaya in the final of the women's sabre ©Getty Images
Lilly King (centre) celebrates 100m breaststroke gold alongside Yuliya Efimova ©Getty Images
Lilly King (centre) celebrates 100m breaststroke gold alongside Yuliya Efimova ©Getty Images
Michael Phelps was in semi-final action in the 200m butterfly ©Getty Images
Michael Phelps was in semi-final action in the 200m butterfly ©Getty Images
Sun Yang of China claimed 200m freestyle gold tonight ©Getty Images
Sun Yang of China claimed 200m freestyle gold tonight ©Getty Images