World number four Elena Dementieva joined the exodus of top seeds at the AEGON International in Eastbourne when she was beaten by Virginie Razzano on Wednesday.

The Russian number one seed was the only one of the top four to reach the second round but she got off to a terrible start and eventually lost 6-0 3-6 7-6 (7/4).

Dementieva broke early in the second set to obtain a foothold in the match and recovered from a break down in the decider but it was the Frenchwoman who came through in the tie-break.

Razzano will now face eighth seed and defending champion Agnieszka Radwanska, who was the beneficiary of AEGON Classic winner Na Li's retirement when 1-3 down in the opening set.

French Open semi-finalist Samantha Stosur could not repeat her Paris form as she lost 6-1 5-7 6-1 to Danish sixth seed Caroline Wozniacki - who the Australian had beaten at Eastbourne last year.

Qualifier Ekaterina Makarova will be Wozniacki's opponent in the quarter-finals after winning two titanic tie-breaks 10-8 and 15-13 against former Wimbledon champion Amelie Mauresmo.

Another qualifier, Vera Dushevina, progressed when her opponent, seventh seed Nadia Petrova, pulled out with a back injury leading 7-5 0-1.

Dushevina will meet Canada's Aleksandra Wozniak, a 7-6 (7/3) 6-3 winner against Zheng Jie, while former Wimbledon finalist Marion Bartoli beat Anna Chakvetadze 7-5 6-3.

The final last-eight spot went to Spain's Anabel Medina Garrigues, who let slip a 5-0 lead in the second set but recovered to win 6-1 7-5.

There was disappointment for Britain in the men's tournament as Alex Bogdanovic and James Ward both went out.

Bogdanovic, who came through qualifying to reach the main draw, was agonisingly close to one of the best wins of his career as he pushed second seed Dmitry Tursunov all the way.

The much-maligned 25-year-old deservedly won the first set on a tie-break but saw the Russian up his game to level the match with a single break of serve in the second set.

Tursunov went ahead in the decider but Bogdanovic fought back well and had points for a 5-3 lead.

However, Tursunov withstood the challenge and then won four straight points from 5-3 down in the tie-break to progress to the semi-finals with a 6-7 (2/7) 6-4 7-6 (7/5) victory.

Bogdanovic, who along with Ward has been given a wild card for Wimbledon, said: "It's tough to lose like that, pretty tough.

"There were only two points (in it) in the tie-break and it could have been anybody's match."

Tursunov will face Uzbekistan's Denis Istomin in the last eight after he knocked out sixth seed Sam Querrey 3-6 7-6 (7/3) 6-4.

Ward was also beaten in a close battle with Canadian qualifier Frank Dancevic, who defeated top seed Igor Andreev yesterday.

The first set was an extremely tight affair, with Dancevic eventually prevailing in a tie-break.

The world number 126 looked to be cruising when he went a double break ahead in the second set but Ward battled back impressively to level.

However, a third break proved decisive as Dancevic served out for a 7-6 (8/6) 6-4 victory and a quarter-final meeting with Argentinian Leonardo Mayer, who beat Julien Benneteau 6-4 6-4.