There were some impressive performances over the first matchday of football action at the Games, but who was the best player on show?
After a whirlwind opening to the men's Olympic football on Thursday, a number of players showcased their talents on the world stage.
Team GB were held to a 1-1 draw by Senegal after Craig Bellamy's first-half effort was cancelled out by a smart finish from Moussa Konate eight minutes from time.
Spain suffered a surprise defeat in their opening match as Yuki Otsu's first-half strike secured three points for Japan. Spain were also reduced to 10 men following the dismissal of Inigo Martinez before half-time and required Manchester United goalkeeper David de Gea to make a number of smart saves to keep the scoreline at 1-0.
Brazil overcame a scare to run out 3-2 winners over Egypt in their opening Group A tie. Rafael, Leandro Damiao and Neymar sent Mano Menezes' side racing into a first-half lead before the Egyptians rallied back after the break with goals from Mohamed Aboutreika and Mohamed Salah.
Uruguay were also in danger of suffering a shock defeat in their opening clash as an impressive UAE side took the lead in the first half through Ismail Matar. Uruguay equalised before half-time following a stunning free-kick from Gaston Ramirez before Nicolas Lodeiro netted the winner in the 56th minute.
Elsewhere, Belarus secured a 1-0 victory over New Zealand through Dmitry Baga's strike, while Honduras and Morocco played out an entertaining 2-2 draw. Switzerland were also held to a 1-1 tie by Gabon, while the match between Mexico and South Korea ended goalless.
So who do you think was the star of the opening round? Vote in our poll and let us know your thoughts in the comment section below.