2016 Rio Olympics - Athletics - Final - Men's 5000m Final - Olympic Stadium - Rio de Janeiro, Brazil - 20/08/2016. Mo Farah (GBR) of Britain celebrates winning the gold. REUTERS/Lucy Nicholson

Former top European member of the International Olympic Committee (IOC), Patrick Hickey, leaves a police station in Rio de Janeiro, Brazil, September 6, 2016. REUTERS/Ricardo Moraes

2016 Rio Paralympics - Women's 400m - T52 Final - Olympic Stadium - Rio de Janeiro, Brazil - 10/09/2016. Queen Mathilde of Belgium poses with Marieke Vervoort of Belgium as she celebrates with her silver medal during the presentation ceremony. REUTERS/Jason Cairnduff

Native American protesters play basketball in an encampment that has grown on the banks of the Cannon Ball River. REUTERS/Andrew Cullen

Britain Boxing - Gennady Golovkin v Kell Brook WBC, IBF & IBO World Middleweight Titles - The O2 Arena, London - 10/9/16 Gennady Golovkin in action with Kell Brook Action Images via Reuters / Peter Cziborra Livepic

Britain Boxing - Gennady Golovkin v Kell Brook WBC, IBF & IBO World Middleweight Titles - The O2 Arena, London - 10/9/16 Kell Brook with Gennady Golovkin at the end of the fight Action Images via Reuters / Peter Cziborra Livepic

FILE PHOTO - Sierra Leone Football Association President Isha Johansen attends a panel discussion during the Anti-Corruption Summit London 2016, at Lancaster House in central London on May 12, 2016. REUTERS/Adrian Dennis/Pool/File Photo

San Antonio Spurs forward Tim Duncan attends a media session for their NBA Finals basketball series against Miami Heat in San Antonio, Texas June 6, 2014. REUTERS/Mike Stone/File Photo