President Barack Obama smiles after putting on the first green at Farm Neck Golf Club during his annual summer vacation on Martha's Vineyard, in Oak Bluffs, Massachusetts, August 7, 2016. REUTERS/Jonathan Ernst

U.S. President Barack Obama reacts after missing a putt on the first green at the Farm Neck Golf Club at Oak Bluffs on Marthas Vineyard, August 11, 2013. REUTERS/Larry Downing/File Photo

2016 Rio Olympics - Golf - Preliminary - Training session - Olympic Golf Course - Rio de Janeiro, Brazil 09/08/2016. Rickie Fowler (USA) of the United States hits a tee shot during a practice round. REUTERS/Andrew Boyers

2016 Rio Olympics - Golf - Preliminary - Training session - Olympic Golf Course - Rio de Janeiro, Brazil 09/08/2016. Bubba Watson (USA) of the United States hits a pitch shot from the fairway during a practice session. REUTERS/Andrew Boyers

2016 Rio Olympics - Golf - Preliminary - Training session - Olympic Golf Course - Rio de Janeiro, Brazil 09/08/2016. Rickie Fowler (USA) (R) of the United States and compatriot Bubba Watson watch Fowler's shot during a practice session. REUTERS/Andrew Boyers

2016 Rio Olympics - Golf - Preliminary - Training session - Olympic Golf Course - Rio de Janeiro, Brazil 09/08/2016. Matt Kuchar (USA) of the United States hits a tee shot during a practice session. REUTERS/Andrew Boyers

Emblems of VW Golf VII car are pictured in a production line at the plant of German carmaker Volkswagen in Wolfsburg, February 25, 2013. REUTERS/Fabian Bimmer/File Photo - RTSKOGI

Maria Verchenova of Russia tees off the 16th hole during the first round of the Evian Masters golf tournament July 21, 2011. REUTERS/Valentin Flauraud