Sarah Kemp remains in contention to claim her maiden LPGA title with the Australian two shots off the lead heading into the final round.
Kemp, who led going into Saturday, carded a 2-under 69 to get to 8-under par and a tie for fourth.
Wei-Ling Hsu birdied the final hole in her third round to share the lead with Moriya Jutanugarn at 10-under with both shooting 65 on moving day at Kingsmill Resort's firm and fast River Course.
Jessica Korda was a stroke back after she birdied three of her last four holes for a 67.
After back-to-back birdies on the 7th and 8th holes, a double-bogey six on the 11th halted Kemp's charge on Saturday.
However, she bounced back immediately with a birdie on the next hole and added another on the 14th to stay in the hunt.
Kemp will play in the second-last group on Sunday as she chases a maiden win on the Tour after 14 years of trying.
"I hit it great and I don't feel like I made anything, hence why I'm here right now," she said afterward," Kemp told Golf Australia.
The 35-year-old is having one of her best years on the LPGA, having contended in February before finishing top five in Florida.
"My life is very different to when I was 25, and no matter what happens tomorrow, if I had 90 or I shot 65, life is great," Kemp said.
The 26-year-old Hsu, from Taiwan, is winless on the LPGA Tour.
She had five straight birdies from holes 3 to 7.
"I don't really think about this much," Hsu said.
"Just try to hit every single shot the place I want to be. And the iron performance those couple hole are really good. Just I put a lot of ball like right next to the pin."
Jutanugarn won the 2018 LA Open for her lone title.
The Thai player's younger sister, Ariya Jutanugarn, won at Kingsmill in 2016 and 2018.
Lizette Salas, The 2014 champion Kingsmill, shot a 64 to sit alongside Kemp.
Next best of the Australian contingent is Katherine Kirk (72) at 2-under while Sarah Jane Smith (71) is 1-over.