Published: Sep 17, 2011 2:20 AM EDT
Updated: Sep 17, 2011 6:30 AM EDT

PRATTVILLE, Alabama (AP) - Teenager Lexi Thompson shot a 4-under 68 Friday to take the lead after the second round of the Navistar LPGA Classic.

The 16-year-old is at 10-under 134, two shots ahead of Stacy Lewis and Becky Morgan at the Robert Trent Jones Trail's Capitol Hill complex.

South Korea's Meena Lee, who came within one shot of matching the course record with an 8-under 64, is fourth at 7-under 137.

Giulia Sergas, Hee Kyung Seo and first-round leader Jennifer Johnson are level at 138.

Thompson, who started the day on the 10th tee, was 4 under on her front nine. She bogeyed the par-3 No. 7 before a birdie at No. 8.

"I'm playing smart and just making birdies," she said. "I'm just trying to do my best. That's all I can do."

As a 14-year-old amateur in 2009, Thompson was in a share of the second-round lead at the Navistar LPGA Classic before finishing 27th. Last year, as a professional, she was 16th.

"I remember teeing off like in the last few groups, but I don't remember really how I played," Thompson said. "I don't know. I just love playing here."

Lewis shot a second-straight 4-under 68 Friday and is in position for a fourth straight top-10 finish. She has one victory and two runner-up finishes this year.

"My friends are like, 'We're not going to tell you that you're playing well anymore. We're tired of hearing it,'" Lewis said. "But it's so nice to be there. It's getting comfortable there.

"I think the more I'm there, the more comfortable I'm going to be, especially coming down the stretch on Sunday."

Morgan birdied No. 9, her final hole, for a 3-under 69.

Lee, who shot a 73 in the opening round, reached 9 under with three straight birdies on Nos. 14-16, but an errant drive led to a bogey on the par-5 17th.