Chun In-gee heads into the weekend with the lead at the Women's Open after a super round of 66 propelled her to the top of the leaderboard ahead of Ashleigh Buhai and Madelene Sagstrom who finished day two seven under.

Hinako Shibuno had led overnight but struggled on day two, plummeting down the standings after carding a two-over 73, now one of three players to sit four under par in a tie for seventh.

Chun was out in front at eight under following her 66, even if Buhai was perhaps the star of the day.

Her 65 included an eagle at the fifth, and she could even have been better placed, sitting a stroke back after failing to putt from 10 feet at the 17th and then finishing with a bogey at the last.

Buhai was alongside Sagstrom, who also shot a six-under round after eight birdies.

Jessica Korda, second overnight, saw her charge stumble with four consecutive bogeys on the back nine that saw her finish three over for the day, now two under for the week.

The cut was set at three over, and Anna Nordqvist became the third consecutive defending Women's Open champion to miss the cut after finishing at four over.

World number one Ko Jin-young also departed at the halfway stage, failing to recover from her opening 76 with an even-par round on day two.