OAKMONT, PA - JUNE 19: Jason Day of Australia and caddie Colin Swatton stand on the fourth tee during the final round of the U.S. Open at Oakmont Country Club on June 19, 2016 in Oakmont, Pennsylvania. (Photo by Christian Petersen/Getty Images)
OAKMONT, PA - JUNE 19: Jason Day of Australia and caddie Colin Swatton stand on the fourth tee during the final round of the U.S. Open at Oakmont Country Club on June 19, 2016 in Oakmont, Pennsylvania. (Photo by Christian Petersen/Getty Images)