Inbee Park shot a 4-under 68 and took the lead Saturday in the Women's British Open after a late penalty against Ahn Sun-Ju.
Park was at 4-under 212 at Royal Birkdale, one shot clear of Ahn, Shanshan Feng of China and Suzann Pettersen going into the final round. The South Korean will be trying to become only the seventh player to win four of the LPGA Tour's majors.
Ahn is still in the hunt, just not in the lead.
After what she thought was a 69, Ahn was penalized for building a stance in a pot bunker left of the 18th green. She was assessed a two-shot penalty, turning her par into a double bogey and her score into a 71.
It also made the final round wide open.