Northern Ireland's Stephanie Meadow carded a second consecutive round of 69 to share 19th place with 12 of her rivals at the Marathon LPGA Classic.
The Jordanstown professional racked up five birdies and three bogeys at Highland Meadows in Ohio to sit nine shots off leader Lydia Ko.
Ko boasts superb form at the event, with the New Zealander triumphing in 2014 and 2016, finishing third in 2015, sharing seventh in 2013 and tying for 20th on her last visit in 2017.
Jodi Ewart Shadoff of England is on 12 under for the tournament, while world number two Danielle Kang is third, one shot further back.