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 - Diving - Women's 3m Springboard Victory Ceremony - Maria Lenk Aquatics Centre - Rio de Janeiro, Brazil - 14/08/2016. Shi Tingmao (CHN) of China poses with her gold medal. REUTERS/Marcos Brindicci

2016 Rio Olympics - Diving - Women's 3m Springboard Victory Ceremony - Maria Lenk Aquatics Centre - Rio de Janeiro, Brazil - 14/08/2016. Shi Tingmao (CHN) of China poses with her gold medal. REUTERS/Marcos Brindicci

2016 Rio Olympics - Diving - Women's 3m Springboard Final - Maria Lenk Aquatics Centre - Rio de Janeiro, Brazil - 14/08/2016. Shi Tingmao (CHN) of China competes. REUTERS/Stefan Wermuth

2016 Rio Olympics - Boxing - Victory Ceremony - Men's Light Fly (49kg) Victory Ceremony - Riocentro - Pavilion 6 - Rio de Janeiro, Brazil - 14/08/2016. Yuberjen Martinez Rivas (COL) of Colombia poses with his silver medal during the victory ceremony. REUTERS/Peter Cziborra

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 - Artistic Gymnastics - Final - Women's Uneven Bars Final - Rio Olympic Arena - Rio de Janeiro, Brazil - 14/08/2016. Aliya Mustafina (RUS) of Russia celebrates after her routine. REUTERS/Ruben Sprich