Rower Meghan Musnicki poses for a portrait at the U.S. Olympic Committee Media Summit in Beverly Hills, Los Angeles, California March 9, 2016. REUTERS/Lucy Nicholson

Olympic torch bearer Fabiana Claudino, captain of the Brazilian volleyball team, attends the Olympic Flame torch relay as she leaves the Planalto Palace in Brasilia, Brazil, May 3, 2016. REUTERS/Adriano Machado

An aerial view of the 2016 Rio Olympics beach volleyball venue on Copacabana beach in Rio de Janeiro, Brazil, July 16, 2016. REUTERS/Ricardo Moraes

Barbara Seixas of Brazil passes the ball to his team mate Agatha Bednarczuk (not pictured) during their Rio Open women's beach volleyball final match against compatriots Larissa Franca and Talita Antunes on Copacabana beach in Rio de Janeiro, Brazil, September 6, 2015. The Rio Open of beach volleyball is a test event for Rio 2016 Olympic Games. REUTERS/Sergio Moraes

Tennis - French Open Men's Singles Final match - Roland Garros - Novak Djokovic of Serbia v Andy Murray of Britain Paris, France, 05/06/16. Djokovic delivers a speach next to Murray. REUTERS/Gonzalo Fuentes

Britain's Andy Murray holds his gold medal during the presentation ceremony after winning the men's singles tennis gold medal match against Switzerland's Roger Federer at the All England Lawn Tennis Club during the London 2012 Olympic Games August 5, 2012. REUTERS/Stefan Wermuth

Tennis - French Open Mens Singles Final match - Roland Garros - Novak Djokovic of Serbia vs Andy Murray of Britain - Paris, France - 05/06/16. Novak Djokovic and Andy Murray hold their trophy. REUTERS/Benoit Tessier

Andy Murray of Britain poses with his two medals during the presentation ceremony for tennis mixed doubles at the All England Lawn Tennis Club during the London 2012 Olympic Games August 5, 2012. REUTERS/Stefan Wermuth