|AIG Women's Open third-round leaderboard|
|-14 Buhai (SA); -9 Shibuno (Jap), Chun (Kor); -7 Park (Kor), Sagstrom (Swe)|
|Selected others: -3 Hull (Eng); -2 Ewart Shadoff (Eng), Reid (Eng), Maguire (Ire); -1 Hall (Eng); +1 Duncan (Sco); +2 Law (Eng)|
|Highlights on BBC Two at 23:30 BST|
South Africa's Ashleigh Buhai conquered stiff winds to card a seven-under-par 64 and take a commanding five-shot lead at the AIG Women's Open.
Buhai, 33, is on 14 under after her third round, which included eight birdies and a bogey at the 18th.
South Korea's three-time major winner In Gee Chun, who led overnight by a shot, carded a 70 to sit at nine under.
Japan's Hinako Shibuno, the 2019 champion, is alongside Chun after her five-under 66.
Chun's compatriot Inbee Park - the 2015 Women's Open champion - is on seven under, as is Sweden's Madelene Sagstrom - the 2021 Women's Open runner-up.
But British hopes have faded at Muirfield - England's Charley Hull is at three under while compatriots Mel Reid and Jodi Ewart Shadoff are two under, as is Ireland's Leona Maguire.
England's Georgia Hall is one under and Scotland's Louise Duncan has slipped back to one over.
Buhai is ranked 84th in the world and her best ever finish in a major is fifth at the 2019 Women's Open at Woburn, where she led after 36 holes.
"I'm very pleased to be able to shoot that score in those conditions," said Buhai, who has three wins on the Ladies European Tour.
"You have to be able to pat yourself on the back, so much so I thought I was six-under and not seven. Looking back, it is one of the best rounds of golf I have ever played."
Looking ahead to Sunday's round, she added: "I don't think you can ever be comfortable in a major whether you're coming from behind or leading. It's going to be another tough day and the wind is going to blow, which is good - I prefer it that way.
"But they say big leads are often more difficult and I think because you try to maybe play defensively, but if I keep doing what I'm doing and sticking to those steps then hopefully, it will be good enough."
Speaking about her round, Chun said: "It was not easy and it was a bit windy out there. I think my game was really good today.
"So I had two bogeys but golf is not always easy. I think it was another good experience with the big wind out there."