South Korea’s Chella Choi shot the first nine-hole score of 29 in U.S. Women’s Open history, but missed a three-foot putt on her final hole that would have matched the championship’s single-round scoring record, settling for a third-round 6-under 64.

The 24-year-old Choi capitalized on the cool, calm conditions early Saturday at Lancaster Country Club and reeled off six birdies on the front nine for a record 29. She was inconsistent on the back with three bogeys and three birdies.