Inbee Park is one round from making history by winning the first three majors of the year.
The top-ranked Park has a four-stroke lead through three rounds at the U.S. Women's Open. She shot 1-under 71 in harsh conditions at Sebonack and is 10 under for the tournament on Saturday.
Fellow South Korean I.K. Kim shot 73 to remain in second but lost two strokes to Park. With the wind whipping, the greens fast and the pin placements tricky, Park was the only player to shoot under par for the round.
No one has ever won the first three majors in a year when there were at least four.