Laetitia Beck birdied five of her first nine holes and added three on the home stretch to set the pace at the first round of the LPGA in Galloway.
Beck's bogey-free, eight-under 63 earned her a one-shot lead over Denmark's Nicole Broch Estrup.
Briana Chacon, Germany's Polly Mack and Thailand's Arpichaya Yubol were tied for third at six-under 65 at the Bay Course at Seaview Hotel & Golf Club.
