HARTFORD, WI - JUNE 13: Grounds crew work on the fourth hole during a practice round prior to the 2017 U.S. Open at Erin Hills on June 13, 2017 in Hartford, Wisconsin. (Photo by Ross Kinnaird/Getty Images)
HARTFORD, WI - JUNE 13: Grounds crew work on the fourth hole during a practice round prior to the 2017 U.S. Open at Erin Hills on June 13, 2017 in Hartford, Wisconsin. (Photo by Ross Kinnaird/Getty Images)