Britain's Elizabeth Armitstead waves before the women's cycling road race final at the London 2012 Olympic Games July 29, 2012. REUTERS/Cathal McNaughton/Files

International Olympic Committee (IOC) President Thomas Bach addresses the 129th IOC session in Rio de Janeiro, Brazil, August 1, 2016. REUTERS/Sergio Moraes

Football Soccer - Southampton v Newcastle United - Barclays Premier League - St Mary's Stadium - 9/4/16 Newcastle's Steven Taylor Action Images via Reuters / Paul Childs Livepic

Anastasia Rodionova of Australia serves the ball to Agnieszka Radwanska of Poland during their women's match at the Qatar Open tennis tournament in Doha February 13, 2013. REUTERS/Fadi Al-Assaad

An aerial view shows the Christ the Redeemer statue with the Maracana stadium, where the opening cermony of the Rio 2016 Olympic Games will be held, in Rio de Janeiro, Brazil, July 16, 2016. REUTERS/Ricardo Moraes/Files

The Rio 2016 Olympic medals are pictured at the Casa da Moeda do Brasil (Brazilian Mint) in Rio de Janeiro, Brazil, June 28, 2016. REUTERS/Sergio Moraes TPX IMAGES OF THE DAY

A man arranges LEGO bricks to build a Rio sign during a LEGO presentation of a massive model of the city including the Olympic sites at the Media Center in Rio de Janeiro, Brazil August 1, 2016. REUTERS/Nacho Doce

Cleveland Cavaliers forward LeBron James wears an " I Can't Breathe" t-shirt during warm ups prior to the game against the Brooklyn Nets in Brooklyn, New York, December 8, 2014. Most Americans want Olympic athletes to keep their political views to themselves at the Rio Games, according to a recent Reuters/Ipsos opinion poll. Mandatory Credit: Robert Deutsch-USA TODAY Sports/File Photo - RTSKH3K