Published: Dec 16, 2011 2:26 PM EST
Updated: Dec 17, 2011 7:30 AM EST

DUBAI, United Arab Emirates (AP) - American teenager Lexi Thompson has a one-shot lead going into the final round of the Dubai Ladies Masters after sinking a birdie putt on the 18th for a 2-under 70 on Friday.

The 16-year-old Thompson, the youngest LPGA Tour winner, is 10 under for the tournament, one shot ahead of Sophie Gustafson of Sweden.

Thompson led by two shots going into the third round but she bogeyed the 15th and Gustafson holed three birdies on the back nine to peg her back.

The American reclaimed the lead when she reached the green in two on the 18th and sank the birdie putt.

Lee-Anne Pace of South Africa (67) and Pernilla Lindberg of Sweden (68) are two shots back of Thompson in the season-ending Ladies European Tour tournament. American Michelle Wie (71) is a five shots off the pace at 5 under.