Jason Day withdrew from Thursday’s opening round of the 126th U.S. Open at Shinnecock Hills Golf Club with a back injury.
The two-time U.S. Open runner-up was 7 over after 10 holes. He left the course in a golf cart with his caddie, Luke Reardon.
Day, 38, seemed to grimace and struggle to turn during a practice swing on the 10th hole, his first hole of the day. He was 7 over on the back nine, including six straight bogeys on Nos. 13 to 18.