HARTFORD, WI - JUNE 12: A member of the grounds crew prepares a green during a practice round prior to the 2017 U.S. Open at Erin Hills on June 12, 2017 in Hartford, Wisconsin. (Photo by Richard Heathcote/Getty Images)
HARTFORD, WI - JUNE 12: A member of the grounds crew prepares a green during a practice round prior to the 2017 U.S. Open at Erin Hills on June 12, 2017 in Hartford, Wisconsin. (Photo by Richard Heathcote/Getty Images)