Sarah Kemp and Laura Diaz are tied for the lead after the second round of the Jamie Farr Owens Corning Classic on Friday.
Australian Kemp carded an impressive eight-under-par 63, while Diaz shot a four-under 67 to take a one-shot lead over Morgan Pressel (68) at Highland Meadows Golf Club.
South Koreans Lee Seon-Hwa and Shin Jiyai and American Natalie Gulbis are tied for fourth at nine under, two shots off the lead, while Michelle Wie is alongside five others a further shot behind after carding a two-under 69 on Friday.
Starting on the back nine, Kemp made a steady start to reach the turn at two under.
However, the 23-year-old was in scintillating form coming home as she shot six birdies, including four in a row from the fifth, to climb to the top of the leaderboard.
Meanwhile, Diaz ensured she secured a share of the lead when the American sank a 12-foot birdie putt on her final hole.