2016 Rio Olympics - Cycling Track - Final - Men's Keirin Final Race for 1st-6th Places - Rio Olympic Velodrome - Rio de Janeiro, Brazil - 16/08/2016. Jason Kenny (GBR) of Britain celebrates winning the gold medal. REUTERS/Paul Hanna

2016 Rio Olympics - Athletics - Final - Men's 110m Hurdles Final - Olympic Stadium - Rio de Janeiro, Brazil - 16/08/2016. Omar McLeod (JAM) of Jamaica celebrates after winning the race REUTERS/Dylan Martinez

2016 Rio Olympics - Cycling Track - Final - Men's Team Pursuit Final Gold Race - Rio Olympic Velodrome - Rio de Janeiro, Brazil - 12/08/2016. Ed Clancy (GBR) of Britain, Steven Burke (GBR) of Britain, Owain Doull (GBR) of Britain and Bradley Wiggins (GBR) of Britain compete. 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 - Cycling Track - Final - Men's Keirin Final Race for 1st-6th Places - Rio Olympic Velodrome - Rio de Janeiro, Brazil - 16/08/2016. Azizul Hasni Awang (MAS) of Malaysia celebrates winning the bronze medal. REUTERS/Eric Gaillard

2016 Rio Olympics - Cycling Track - Final - Men's Keirin Final Race for 1st-6th Places - Rio Olympic Velodrome - Rio de Janeiro, Brazil - 16/08/2016. Matthijs Buchli (NED) of Netherlands celebrates winning the silver and Azizul Hasni Awang (MAS) of Malaysia celebrates winning the bronze. REUTERS/Paul Hanna

2016 Rio Olympics - Sailing - Preliminary - Men's Skiff - 49er - Race 10/11/12 - Marina de Gloria - Rio de Janeiro, Brazil - 16/08/2016. Peter Burling (NZL) of New Zealand and Blair Tuke (NZL) of New Zealand celebrate gold medal. REUTERS/Benoit Tessier

2016 Rio Olympics - Sailing - Preliminary - Men's Skiff - 49er - Race 10/11/12 - Marina de Gloria - Rio de Janeiro, Brazil - 16/08/2016. Peter Burling (NZL) of New Zealand and Blair Tuke (NZL) of New Zealand celebrate. REUTERS/Benoit Tessier