| By New York Tennis Magazine Staff

Russia's Maria Kirilenko, ranked 27th in the world, defeated 2011 U.S. Open champion Samantha Stosur from Australia in second round action of the Pan Pacific Open in three sets, 6-2, 4-6, 6-4.

"You never want to go out in the first round after the week I had at the U.S. Open," Stosur said. "It's hard to explain how you could do well at the U.S. Open and then not do well here. I came as prepared as I could."

Stosur, seeded ninth at the 2011 U.S. Open, defeated the 25th seeded Kirilenko in the fourth round of the 2011 U.S. Open in their last match up, 6-2, 6-7, 6-3.

"I just played her a couple weeks ago, so I knew what to do," said Kirilenko after her win against Stosur.

In other matches, at the Pan Pacific Open, Poland's Agnieskza Radwanska defeated Germany's Angelique Kerber in three sets, 3-6, 6-3, 6-3. Ana Ivanovic of Serbia eliminated Laura Robson of Great Britain, 7-5, 6-4 in straight sets. Fellow Americans Christina McHale eliminated Tamira Paszek of Austria, 7-6, 6-3, and Coco Vandeweghe also won her match over Zheng Jie of China, 7-6, 4-6, 6-2.