BIRMINGHAM: Maria Sharapova won twice within hours to reach the Aegon Classic quarterfinals on Thursday.

Extending her comeback after a 10-month layoff because of a shoulder injury and surgery, Sharapova needed only two minutes and five points to wrap up a 6-3, 6-4 victory against American Alexa Glatch in a second-round match suspended on Wednesday by rain.

The unseeded Sharapova required little more than an hour to dispatch seventh-seeded Francesca Schiavone of Italy 6-1, 6-3.

Having reached her third quarterfinals in her third tournament, Sharapova would not say she was playing better than expected.

"I'm just not serving full out as I did before the injury," she said. "I don't want to come out, after not playing for so long, hitting a really big serve. It gives me a chance to construct points." The former Wimbledon champion was content to slowly work on her serve.

"I am just going to take it tournament by tournament and match by match," Sharapova said. "I just want to get the percentage of first serves in. I don't know when I am going to be at the level I was, or when I will be better. It may take time." She lost in the quarterfinals at Warsaw and the French Open, and next up on Friday will be Belgian teen Yanina Wickmayer.

Wickmayer, runner-up to Kateryna Bondarenko a year ago, defeated Roberta Vinci of Italy 6-1, 6-4.

Top-seeded Zheng Jie became the third career top 20 win for Magdalena Rybarikova of Slovakia, who hit 14 aces in prevailing 7-6 (10), 6-4 for her first quarterfinals since February.

Other third-round winners included Sania Mirza, who ousted fifth-seeded Anastasia Pavlyuchenkova of Russia 7-6 (3), 3-6, 6-2.

Melinda Czink of Hungary upset third-seeded Aleksandra Wozniak of Canada 6-7 (5), 7-5, 7-5, and fourth-seeded Li Na of China beat Aravane Rezai of France 7-5