2016 Rio Olympics - Tennis - Preliminary - Women's Singles First Round - Olympic Tennis Centre - Rio de Janeiro, Brazil - 06/08/2016. Venus Williams (USA) of USA reacts during her match against Kirsten Flipkens (BEL) of Belgium. REUTERS/Kevin Lamarque

An agent of the bomb squad in protective clothing stands in the area near the finishing line of the men's cycling road race at the 2016 Rio Olympics after they made a controlled explosion, in Copacabana, Rio de Janeiro, Brazil August 6, 2016. REUTERS/Paul Hanna

An agent of the bomb squad in protective clothing stands in the area near the finishing line of the men's cycling road race at the 2016 Rio Olympics after they made a controlled explosion, in Copacabana, Rio de Janeiro, Brazil August 6, 2016. REUTERS/Paul Hanna

2016 Rio Olympics - Tennis - Olympic Tennis Centre - Rio de Janeiro, Brazil - 06/08/2016. People wait in line for beer. REUTERS/Kevin Lamarque

2016 Rio Olympics - Cycling Road - Final - Men's Road Race - Fort Copacabana - Rio de Janeiro, Brazil - 06/08/2016. Greg Van Avermaet (BEL) of Belgium celebrates winning the gold medal Reuters/Bryn Lennon/Pool

2016 Rio Olympics - Cycling Road - Victory Ceremony - Men's Road Race Victory Ceremony - Fort Copacabana - Rio de Janeiro, Brazil - 06/08/2016. Greg Van Avermaet (BEL) holds the gold medal. REUTERS/Phil Walter/Pool

2016 Rio Olympics - Cycling Road - Final - Men's Road Race - Fort Copacabana - Rio de Janeiro, Brazil - 06/08/2016. Vincenzo Nibali (ITA) of Italy competes REUTERS/Bryn Lennon/Pool

2016 Rio Olympics - Cycling Road - Final - Men's Road Race - Fort Copacabana - Rio de Janeiro, Brazil - 06/08/2016. Vincenzo Nibali (ITA) of Italy competes REUTERS/Bryn Lennon/Pool