KOHLER, Wis. (AP) -- Na Yeon Choi had one of the best rounds in U.S. Women's Open history, taking control of the tournament with a 7-under 65 in the third round at Blackwolf Run on Saturday.
The fifth-ranked South Korean star's remarkable round put her at 8 under for the tournament, giving her a six-stroke lead over Amy Yang. Only four players ever have posted a lower round in the Open, and the 65 tied the lowest third-round score in the event's history.
Michelle Wie faded, shooting a 6-over 78 to fall to 2 over. Wie shot a 66 on Friday, putting her a stroke behind leader Suzann Pettersen. Pettersen also shot a 78 and slid to 1 over.
Yang had a 69. Choi and Yang were the only players to break 70 in the round.
Lexi Thompson, Mika Miyazato and Sandra Gal were tied for third at 1 under.