Sweden's Linn Grant shot a blistering nine-under-par 62 on Saturday to take a commanding six-shot lead into the final round of the Dana Open in Ohio.
The 24-year-old sits at 18-under par, with five players tied for second at 12-under. Stephanie Meadow and Lauren Walsh failed to make the cut.
In pursuit of her first win on the LPGA Tour, Grant put some distance between herself and the pack with an eagle and eight birdies, with just one dropped shot in a round delayed four hours by rain.
Second-round leader Annie Park shot an even-par 71 to sit in a tie for seventh.