(CNN) -- Maria Sharapova continued her fine run at the WTA Bank of the West Classic in California with a straight sets win over Olga Govortsova of Belarus to reach the quarterfinals.
The fifth seed swept aside Govortsova 6-3 6-3 in their second round match in her first tournament of the American hard court season.
"It was a sloppy first game but the rest of it was fine," Sharapova told the official WTA website.
"I took my chances when I could,"
The former world number one beat Zheng Jie of China in her first round clash at the oldest women-only event on the tennis circuit as she works her way up the rankings after a series of injuries.
In other action, 16th seed Shahar Peer of Israel was sent crashing by Sharapova's fellow Russian Maria Kirilenko, who advanced with a 6-4 6-3 victory on Thursday night.
"This time I decided to be a lot more aggressive," Kirilenko said. "This year has been so much better and given me a lot of confidence."
Home hopes took a jolt as Melanie Oudin was dispatched 6-3 6-1 by eighth-seeded Victoria Azarenka, who is finding her best form in mid-year.
She next plays defending champion Marion Bartoli of France who beat former world number one Serbia's Ana Ivanovic 6-3 6-4 in the final match Thursday in Stanford.