OAKMONT, PA - JUNE 14: Rory McIlroy of Northern Ireland walks down the fairway during a practice round prior to the U.S. Open at Oakmont Country Club on June 14, 2016 in Oakmont, Pennsylvania. (Photo by Rob Carr/Getty Images)
OAKMONT, PA - JUNE 14: Rory McIlroy of Northern Ireland walks down the fairway during a practice round prior to the U.S. Open at Oakmont Country Club on June 14, 2016 in Oakmont, Pennsylvania. (Photo by Rob Carr/Getty Images)