Ashleigh Buhai was in superb form as the South African took the lead heading into the final round at the Women's Open.

Even though she trailed Chun In-gee heading into the weekend, Buhai was arguably the star on Friday with a brilliant 65, and the 33-year-old dazzled again at Muirfield.

Buhai carded a low score of 64 to take a six-shot lead at 14 under, with a bogey on the last the only blot on her scorecard, which included eight birdies.

Hinako Shibuno, who led heading into round two, propelled herself up to second place alongside Chun with a bogey free 66.

Chun holed costly bogeys on the ninth and 15th, yet regained her composure to finish with a birdie and a par, keeping her at nine under.

Madelene Sagstrom and Park Inbee are tied for fourth on seven under after respective rounds of 71 and 70, but will require a slip up from Buhai to truly be in contention on Sunday.

World number two Minjee Lee endured something of a mixed bag, with three bogeys and four birdies, and the Australian is T6, nine off the lead alongside Stephanie Kyriacou and Miyu Yamashita.

Nelly Korda had another difficult day, with the Olympic gold medallist and world number three sitting on three over for the tournament after carding 72.