Tiffany Joh holds a three-shot lead after two rounds of the Scottish Ladies Open but Australians Su Oh and Minjee Lee are in the top 10 and poised for a weekend charge.
Oh shot up seven places to tied fifth after a round of five-under 66 on Saturday which included seven birdies and two bogeys.
She sits at eight under, five shots behind Joh.
After making the turn at even- par for the day, world No.11 Lee made eagle on the par-5 11th on her way to a 68 and seven-under total.
Australians Karrie Webb (69) and Sarah Jane Smith (66) at two under, Katherine Kirk (72) at even par and Sarah Kemp (73) one over, also made the cut.
Joh, who is chasing a maiden LPGA Tour victory, carded a four-under 67 to stay in front.
The 31-year-old American made five birdies and one bogey, her first of the week, to register a 13-under aggregate of 129.
US Open champion Ariya Jutanugarn produced a joint best-of-the-day 65 to get within three strokes of the lead on 132, along with Amy Yang (66) of South Korea.
Caroline Masson (65) of Germany was alone in fourth position on 133.
"I had pretty low expectations for today," overnight leader Joh said.
"I probably would have taken anything under par, but on the first hole, right away we made a 45-footer, and I just started laughing.
"I didn't even know what to say. So, yeah, it was a really good start and I guess I just kept rolling with it."
and Katherine Kirk carded rounds of 70 be one under while Karrie Weeb's even-par 71 has her tied for 43rd.
