South Korea’s In Gee Chun has won the US Women’s Open, beating compatriot Amy Yang by one stroke at Pennsylvania’s Lancaster Country Club.

Chun carded a final round 66 for an eight-under-par total of 272, with runner-up Yang shooting 71 on the final day.

Australian veteran Karrie Webb, who was the co-tournament leader after the first round, finished in a tie for 14th, after shooting even par for the tournament.