2016 Rio Olympics - Canoe Sprint - Victory Ceremony - Men's Kayak Single (K1) 200m - Victory Ceremony - Lagoa Stadium - Rio de Janeiro, Brazil - 20/08/2016. Gold medalist Liam Heath (GBR) of Britain kisses his medal. REUTERS/Murad Sezer

2016 Rio Olympics - Canoe Sprint - Victory Ceremony - Men's Kayak Single (K1) 200m - Victory Ceremony - Lagoa Stadium - Rio de Janeiro, Brazil - 20/08/2016. REUTERS/Murad Sezer

2016 Rio Olympics - Canoe Sprint - Victory Ceremony - Men's Kayak Single (K1) 200m - Victory Ceremony - Lagoa Stadium - Rio de Janeiro, Brazil - 20/08/2016. Gold medalist Liam Heath (GBR) of Britain poses with his medal. REUTERS/Murad Sezer

Security video shows three U.S. Olympic swimmers returning from a bathroom to their taxi at a gasoline station where they were accused by staff of having caused damage. Courtesy Globo TV/Handout via Reuters

2016 Rio Olympics - Athletics - Final - Women's Pole Vault Final - Olympic Stadium - Rio de Janeiro, Brazil - 19/08/2016. Ekaterini Stefanidi (GRE) of Greece celebrates after winning gold. REUTERS/Kai Pfaffenbach

2016 Rio Olympics - Athletics - Final - Men's 4 x 100m Relay Final - Olympic Stadium - Rio de Janeiro, Brazil - 19/08/2016. Mike Rodgers (USA) Justin Gatlin (USA) and Tyson Gay (USA) of USA react as they realise they have been disqualified REUTERS/David Gray

2016 Rio Olympics - Athletics - Final - Men's 4 x 100m Relay Final - Olympic Stadium - Rio de Janeiro, Brazil - 19/08/2016. First placed Yohan Blake (JAM) of Jamaica, Nickel Ashmeade (JAM) of Jamaica, Usain Bolt (JAM) of Jamaica and Asafa Powell (JAM) of Jamaica pose with Brazilian flags. REUTERS/Dominic Ebenbichler

2016 Rio Olympics - Athletics - Final - Men's 4 x 100m Relay Final - Olympic Stadium - Rio de Janeiro, Brazil - 19/08/2016. First placed Yohan Blake (JAM) of Jamaica, Nickel Ashmeade (JAM) of Jamaica, Asafa Powell (JAM) of Jamaica and Usain Bolt (JAM) of Jamaica pose. REUTERS/Dominic Ebenbichler