PATTAYA CITY, Thailand - No.4 seed Sybille Bammer was the first seed to be eliminated from the PTT Pattaya Open, falling 64 75 to Vera Dushevina in the second round on Wednesday. Dushevina, ranked 75th in the world and seeking her first career Sony Ericsson WTA Tour singles title, will be joined in the quarters by No.5 seed Peng Shuai, who got past Galina Voskoboeva, 76(4) 60.

In first round action, No.6 seed Tamarine Tanasugarn beat Akgul Amanmuradova, 62 76(4), No.7 seed Shahar Peer routed wildcard Noppawan Lertcheewakarn, 61 60, and No.8 seed Magdalena Rybarikova survived a spirited effort by the recently unretired Kimiko Date Krumm, 62 46 64.

Also, qualifier Vitalia Diatchenko beat Ryoko Fuda, 63 16 63. Fuda, who lost in qualifying, was a late replacement for No.3 seed Dominika Cibulkova. Cibulkova had to withdraw with a viral illness before the match.

"We came here on Monday night and last night I got a fever," Cibulkova said. "I flew 10 hours here and I can't play, so it's very disappointing. I think for sure it was because I have done so much travelling and we had a lot of stressful days at the Fed Cup. Now I'll rest and go to Dubai on Friday and I hope I'll get better."

Peng will play top-seeded Vera Zvonareva if Zvonareva gets past Yaroslava Shvedova on Thursday. Dushevina awaits the winner of another match scheduled for Thursday: Peer versus qualifier Yuliya Beygelzimer. In other second round matches on Thursday, No.2 seed Caroline Wozniacki plays Ksenia Pervak, Tanasugarn takes on Neuza Silva, Sania Mirza plays Diatchenko and Rybarikova goes against qualifier Ivana Lisjak.

Meanwhile, in doubles action Wednesday, the No.1 seeds, Amanmuradova and Chuang Chia-Jung, beat Fuda and Tomoko Yonemura, 61 63, to advance to the semifinals.