The Frenchwoman converted on the second and never looked back before drawing first blood at 6-4.

The second set was much tighter, and after two exchanges of breaks at 4-4, Peng started to show more battling qualities, holding serve in the ninth game while facing two break points and went on to take decisive break in the next game to pull back one set.

Inspired by a thunderous audience, Peng, last year's semifinalist here, was in a class of her own, stretching Mauresmo all the way while the 28-year-old Frenchwoman was troubled with too many unforced errors, losing the final set at 6-2.

Despite the ranking of 49th in the world, Peng has been very dangerous in the past, notching three top 10 wins in her young career, all on hardcourt, before she came into the quarterfinal.

"Peng play good tennis from the baseline and did better and better in the match, especially on the home court," said the 28-year-old Frenchwoman, who has not struck a ball since participating in France's 3-2 Fed Cup defeat to Italy in July because of an adductor strain.

The former world No.1 bad fortunes as she has struggled for form and fitness this season, failing to make it beyond the quarterfinals in over half the tournaments she has competed in.

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