OAKMONT, PA - JUNE 16: Fans take cover during an inclement weather delay in the first round of the U.S. Open at Oakmont Country Club on June 16, 2016 in Oakmont, Pennsylvania. (Photo by Sam Greenwood/Getty Images)

OAKMONT, PA - JUNE 16: Lee Westwood of England and caddie Billy Foster watch soccer during an inclement weather delay in the first round of the U.S. Open at Oakmont Country Club on June 16, 2016 in Oakmont, Pennsylvania. (Photo by Andrew Redington/Getty Images)

OAKMONT, PA - JUNE 16: Lee Westwood of England and caddie Billy Foster watch soccer during an inclement weather delay in the first round of the U.S. Open at Oakmont Country Club on June 16, 2016 in Oakmont, Pennsylvania. (Photo by Andrew Redington/Getty Images)

OAKMONT, PA - JUNE 16: Lee Westwood of England and caddie Billy Foster watch soccer during an inclement weather delay in the first round of the U.S. Open at Oakmont Country Club on June 16, 2016 in Oakmont, Pennsylvania. (Photo by Andrew Redington/Getty Images)

OAKMONT, PA - JUNE 16: A sign displays a message about a suspension in play due to inclimate weather during the first round of the U.S. Open at Oakmont Country Club on June 16, 2016 in Oakmont, Pennsylvania. (Photo by Andrew Redington/Getty Images)

OAKMONT, PA - JUNE 16: A weather warning sign is seen on a leaderboard during the first round of the U.S. Open at Oakmont Country Club on June 16, 2016 in Oakmont, Pennsylvania. (Photo by Andrew Redington/Getty Images)

OAKMONT, PA - JUNE 16: Fans walk on the course after play was suspended by dangerous weather during the first round of the U.S. Open at Oakmont Country Club on June 16, 2016 in Oakmont, Pennsylvania. (Photo by Andrew Redington/Getty Images)

OAKMONT, PA - JUNE 16: A weather warning sign is seen on a leaderboard during the first round of the U.S. Open at Oakmont Country Club on June 16, 2016 in Oakmont, Pennsylvania. (Photo by Andrew Redington/Getty Images)