2016 Rio Olympics - Boxing - Quarterfinal - Women's Middle (75kg) Quarterfinals Bout 242 - Riocentro - Pavilion 6 - Rio de Janeiro, Brazil - 17/08/2016. Claressa Shields (USA) of USA and Yaroslava Yakushina (RUS) of Russia compete. REUTERS/Peter Cziborra

European Olympic Committee (EOC) President Patrick Hickey (L) and International Olympic Committee President (IOC) Thomas Bach (C) arrive for a ceremony in Frankfurt, Germany, May 20, 2016. REUTERS/Kai Pfaffenbach/Files

European Olympic Committees (EOC) President Patrick Hickey (L), International Olympic Committee President (IOC) Thomas Bach (C) and President of the German Olympic Sports Confederation (DOSB) Alfons Hoermann pose for a picture before a ceremony marking the 10th anniversary of the confederation in Frankfurt in this May 20, 2016 file photo. REUTERS/Kai Pfaffenbach

Conseslus Kipruto of Kenya celebrates breaking the olympic record and winning gold. REUTERS/Kai Pfaffenbach

Tickets for the 2016 Rio Olympics. REUTERS/Ricardo Moraes

2016 Rio Olympics - Athletics - Final - Men's Decathlon Long Jump - Groups - Olympic Stadium - Rio de Janeiro, Brazil - 17/08/2016. Ashton Eaton (USA) of USA competes. REUTERS/Phil Noble

2016 Rio Olympics - Athletics - Final - Men's Decathlon 100m - Olympic Stadium - Rio de Janeiro, Brazil - 17/08/2016. Ashton Eaton (USA) of USA and Lindon Victor (GRN) of Grenada compete REUTERS/Lucy Nicholson

2016 Rio Olympics - Athletics - Final - Men's Decathlon Long Jump - Groups - Olympic Stadium - Rio de Janeiro, Brazil - 17/08/2016. Damian Warner (CAN) of Canada competes. REUTERS/Phil Noble