Former champion Suzann Pettersen of Norway extended her lead to five strokes at the LPGA Thailand on Saturday after shooting a 4-under 68 in her third bogey-free round.
The 2007 winner totaled 18-under 198 at Siam Country Club on a hot day mixed with rain and wind.
``I'm playing very solid, gave myself some good chances on the greens,'' Pettersen said. ``I'm playing very good going into the last round.''
Song-Hee Kim of South Korea was next, holing three birdies in the last four holes to hit a 68.
``I played pretty good today, but it was hard on the front nine. I didn't get many birdies,'' Kim said. ``On the back nine, I got more birdies and more confidence.''
After two error-free rounds, Ai Miyazato of Japan bogeyed twice Saturday to offset four birdies to finish with a 70 and share of third place at 204 with compatriot Momoko Ueda (69) and 2008 LPGA Championship winner Yani Tseng of Taiwan (68).
Christie Kerr, the 2007 U.S. Open champion, made two eagles in a 66 to be a further shot back, along with 2009 LPGA Thailand runner-up Hee Young Park (72) and Maria Hjorth (70).
