<p>The Russian, who claimed her first title since returning from a shoulder injury in Tokyo on Saturday, had to come from 5-2 down in the third set to win a three-hour opening match on Tuesday. <br /><br />There was to be no way back against Peng, however, and the world number 53 converted her third match point to upset a high profile player for the second evening in a row after her second-round win over defending champion Jelena Jankovic. <br /><br />Fourth seed Elena Dementieva restored order in the second Russia versus China clash of the evening, rattling through her third round match against Li Na 6-2, 6-0 in just under an hour to move into the quarterfinals. Svetlana Kuznetsova, the 2006 China Open champion, overcame a misfiring serve to claim her place in the last eight with a 6-3, 4-6, 6-0 victory over Ukraine's Alona Bondarenko. <br /><br />Anastasia Pavlyuchenkova beat Canadian Aleksandra Wozniak 6-4, 6-4. <br />Men's fourth seed Nikolay Davydenko earlier boosted his chances of reaching the ATP Tour's season finale for a fifth time with a 6-1, 6-0 thrashing of Philipp Kohlschreiber. <br />Second seed Novak Djokovic later claimed a place in the men's last-eight with 6-3, 6-0 demolition of fellow Serb Viktor Troicki. <br /><br />Spain's Fernando Verdasco defeated Juan Carlos Ferrero 7-5, 6-4.<br /><br />Tsonga advances<br /><br />Second seed Jo-Wilfried Tsonga blasted past Germany's Mischa Zverev 6-4, 6-3 to reach the last 16 of the Japan Open on Wednesday. <br /><br />The Frenchman will play countryman Richard Gasquet in the next round after the former top-10 player thrashed German Philipp Petzschner 6-3, 6-2.</p>
<p>The Russian, who claimed her first title since returning from a shoulder injury in Tokyo on Saturday, had to come from 5-2 down in the third set to win a three-hour opening match on Tuesday. <br /><br />There was to be no way back against Peng, however, and the world number 53 converted her third match point to upset a high profile player for the second evening in a row after her second-round win over defending champion Jelena Jankovic. <br /><br />Fourth seed Elena Dementieva restored order in the second Russia versus China clash of the evening, rattling through her third round match against Li Na 6-2, 6-0 in just under an hour to move into the quarterfinals. Svetlana Kuznetsova, the 2006 China Open champion, overcame a misfiring serve to claim her place in the last eight with a 6-3, 4-6, 6-0 victory over Ukraine's Alona Bondarenko. <br /><br />Anastasia Pavlyuchenkova beat Canadian Aleksandra Wozniak 6-4, 6-4. <br />Men's fourth seed Nikolay Davydenko earlier boosted his chances of reaching the ATP Tour's season finale for a fifth time with a 6-1, 6-0 thrashing of Philipp Kohlschreiber. <br />Second seed Novak Djokovic later claimed a place in the men's last-eight with 6-3, 6-0 demolition of fellow Serb Viktor Troicki. <br /><br />Spain's Fernando Verdasco defeated Juan Carlos Ferrero 7-5, 6-4.<br /><br />Tsonga advances<br /><br />Second seed Jo-Wilfried Tsonga blasted past Germany's Mischa Zverev 6-4, 6-3 to reach the last 16 of the Japan Open on Wednesday. <br /><br />The Frenchman will play countryman Richard Gasquet in the next round after the former top-10 player thrashed German Philipp Petzschner 6-3, 6-2.</p>