2016 Rio Olympics - Golf - Final - Men's Individual Stroke Play - Olympic Golf Course - Rio de Janeiro, Brazil - 14/08/2016. Justin Rose (GBR) of Britain celebrates his gold medal win in the men's Olympic golf compeititon. REUTERS/Andrew Boyers

2016 Rio Olympics - Cycling Track - Final - Men's Sprint Final Gold Race - Rio Olympic Velodrome - Rio de Janeiro, Brazil - 14/08/2016. Jason Kenny (GBR) of Britain and Callum Skinner (GBR) of Britain compete. REUTERS/Matthew Childs

2016 Rio Olympics - Cycling Track - Semifinal - Men's Sprint Semifinals Race - Rio Olympic Velodrome - Rio de Janeiro, Brazil - 13/08/2016. Jason Kenny (GBR) of Britain celebrates winning the men's sprint semifinals race. REUTERS/Matthew Childs

2016 Rio Olympics - Tennis - Victory Ceremony - Women's Singles Victory Ceremony - Olympic Tennis Centre - Rio de Janeiro, Brazil - 13/08/2016. Silver medalist Angelique Kerber (GER) of Germany reacts after receiving her medals. REUTERS/Toby Melville

2016 Rio Olympics - Tennis - Victory Ceremony - Mixed Doubles Victory Ceremony - Olympic Tennis Centre - Rio de Janeiro, Brazil - 14/08/2016. Silver medalists Venus Williams (USA) of USA and Rajeev Ram (USA) of USA receive their medals. REUTERS/Toby Melville

2016 Rio Olympics - Athletics - Final - Women's Marathon -Sambodromo - Rio de Janeiro, Brazil - 14/08/2016. Jemima Sumgong (KEN) of Kenya celebrates as she crosses the finish line to win the race REUTERS/David Gray

2016 Rio Olympics - Athletics - Final - Women's Marathon -Sambodromo - Rio de Janeiro, Brazil - 14/08/2016. Jemima Sumgong (KEN) of Kenya celebrates after winning the race REUTERS/Johannes Eisele/Pool

2016 Rio Olympics - Golf - Final - Men's Individual Stroke Play - Olympic Golf Course - Rio de Janeiro, Brazil - 14/08/2016. Henrik Stenson (SWE) of Sweden lines up his putt on the third green during the final round of the men's Olympic golf compeititon. REUTERS/Andrew Boyers