Tiger Woods of the U.S. stands on the 12th green during a practice round ahead of the British Open Championship at the Royal Liverpool Golf Club in Hoylake, northern England July 15, 2014. REUTERS/Stefan Wermuth/File Photo

Stan Wawrinka of Switzerland, winner of the 2016 U.S. Open tennis tournament poses with the trophy in Manhattan, New York, U.S., September 12, 2016. REUTERS/Tony Pyle

Stan Wawrinka of Switzerland, winner of the 2016 U.S. Open tennis tournament poses with the trophy in Manhattan, New York, U.S., September 12, 2016. REUTERS/Tony Pyle

Honda MotoGP rider Dani Pedrosa of Spain races during the third free practice ahead of the Valencia Motorcycle Grand Prix at the Ricardo Tormo racetrack in Cheste, near Valencia, Spain, November 7, 2015. REUTERS/Heino Kalis

Cycling - The Tour de France cycling race - The 178-km (110.6 miles) Stage 12 from Montpellier to Chalet-Reynard - 14/07/2016 - Movistar Team rider Nairo Quintana of Colombia reacts after the finish line. REUTERS/Juan Medina

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

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

2016 Rio Paralympics - Football Soccer - Men's 5-a-side Men's Preliminaries Pool A - Brazil vs Morocco - Olympic Tennis Centre - Rio de Janeiro, Brazil - 09/09/2016. Nonato and Jefinho (BRA) of Brazil in action. REUTERS/Ricardo Moraes