2016 Rio Olympics - Cycling Track - Victory Ceremony - Men's Sprint Victory Ceremony - Rio Olympic Velodrome - Rio de Janeiro, Brazil - 14/08/2016. Callum Skinner (GBR) of Britain with the silver medal and Jason Kenny (GBR) of Britain with the gold medal pose on podium. REUTERS/Matthew Childs

2016 Rio Olympics - Cycling Track - Victory Ceremony - Men's Keirin Victory Ceremony - Rio Olympic Velodrome - Rio de Janeiro, Brazil - 16/08/2016. Gold medalist Jason Kenny (GBR) of Britain poses with his gilfriend, women's omnium gold medalist Laura Trott (GBR) of Britain. REUTERS/Matthew Childs

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/Paul Hanna

2016 Rio Olympics Athletics - Semifinal - Women's 200m Semifinals - Olympic Stadium - Rio de Janeiro, Brazil - 16/08/2016. Dafne Schippers (NED) of Netherlands crosses the finish line. REUTERS/Pawel Kopczynski

2016 Rio Olympics - Athletics - Semifinal - Women's 200m Semifinals - Olympic Stadium - Rio de Janeiro, Brazil - 16/08/2016. Dafne Schippers (NED) of Netherlands and Elaine Thompson (JAM) of Jamaica celebrate. REUTERS/David Gray

2016 Rio Olympics - Athletics - Semifinal - Women's 200m Semifinals - Olympic Stadium - Rio de Janeiro, Brazil - 16/08/2016. Dafne Schippers (NED) of Netherlands. REUTERS/Lucy Nicholson

2016 Rio Olympics - Athletics - Final - Women's 1500m Final - Olympic Stadium - Rio de Janeiro, Brazil - 16/08/2016. Faith Chepngetich Kipyegon (KEN) of Kenya falls after winning the final. REUTERS/David Gray

2016 Rio Olympics - Athletics - Final - Women's 1500m Final - Olympic Stadium - Rio de Janeiro, Brazil - 16/08/2016. Faith Chepngetich Kipyegon (KEN) of Kenya celebrates winning the gold. REUTERS/Lucy Nicholson