Moira Dunn shot a 68 to finish one shot back at 6-under-par 138. Sung Ah Yim stands at minus-6 through 16 holes while Karine Incher is 6 under through 14. They will be among a group of players who will return to Corning Country Club Saturday morning to complete the second round.
The Swede played her second shot inside 6 feet for a birdie at the par-4 10th and converted a 5-foot putt for a birdie at the 11th. Sorenstam then birdied the par-5 12th to open a two-shot lead at 9 under.
Sorenstam found trouble with a bogey at the 14th, however, and dropped another shot with a bogey at the following hole. She managed to par her way in to finish alongside Turner at minus-7.
Turner played the back side first and tallied a pair of birdies over her first nine holes. She stumbled to back-to-back bogeys from the first but the 48- year-old responded with a birdie at the par-5 fifth.
Turner parred her four remaining holes to post a round of 71.
'It was a little bit of a different round today,' said Turner, who shared the first-round lead with Sophie Gustafson. 'It was interesting because there was no wind, but I wasn't quite hitting the ball as crisp today, especially in the middle of the round.'
Gustafson birdied the 10th and reached 8 under with a birdie at the 13th. She hit a bad drive on her way to a bogey at the 18th and suffered a triple-bogey at the first to fall back to 4 under.
She countered with a birdie at the second but gave that shot back with a bogey at the fourth. Gustafson then birdied the fourth and parred the sixth to stand at 5 under par through 15 holes. Jimin Kang is in the clubhouse at 5-under-par 139 after a round of 70.
Joo Mi Kim and Meena Lee are knotted at 4-under-par 140. Natalie Gulbis was one shot further back at 3-under-par 141 along with Kris Tamulis.
The second round will resume Saturday at 7:15 a.m. (ET).