Ivanovic: Crashed out

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• Day five results

Number one seed Ana Ivanovic, who dodged a bullet in her second round match, had no such luck on Friday as she crashed out in straight sets to Jie Zheng.

Ivanovic capitulated 6-1 6-4 on Court One to the 24-year-old from China.

The Serbian had stared defeat in the face against Nathalie Dechy two days earlier, saving match point when her shot rolled along the net and dropped in.

There was no reprieve this time though as Zheng booked her place in the fourth round at Wimbledon for the first time in three attempts.

A difficult week has taught Ivanovic her climb to the summit of the women's game has brought with it a fresh level of competition.

"The one thing I've learnt about being number one is that everyone is so pumped up to beat me,'' she said.

"Now my opponents will always try their best to beat me. In my previous matches here and today, my opponents felt they had nothing to lose.

"They've played some of their best tennis against me. It's something you have to accept and, with time, learn to deal with."

Two-time champion Serena Williams moved into the fourth round after beating 2006 winner Amelie Mauresmo 7-6 6-1.

Serve was broken four times in a fluctuating opening set but Williams eventually won it on a tie-break.

And with Mauresmo troubled by a thigh injury in the second set, Williams romped through it for the loss of just a single game to record her 10th win in 12 meetings against the Frenchwoman.

Williams said: "I didn't play my best tennis. I was just glad I could pull through.

"I haven't been playing my best but I'm thinking positive. My volleys are benefiting from my doubles and in the second week I should do better.''

Fourth seed Svetlana Kuznetsova celebrated her 23rd birthday by scoring a straight sets victory over Barbora Zahlavova Strycova of the Czech Republic.

The Russian, a three-time Wimbledon quarter-finalist and former US Open champion, broke twice in the opening set to take it 6-2 and wrapped up the second 6-4 to book her place in the last 16.

She was joined in round four by fellow Russian Anna Chakvetadze, who put out compatriot Evgeniya Rodina.

Chakvetadze, the eighth seed, took that one 6-4 6-3 and now plays Nicole Vaidisova of the Czech Republic after the 18th seed eased past Aussie Casey Dellacqua 6-2 6-4.

Last year's beaten finalist Marion Bartoli saw her hopes ended by American Bethanie Mattek.

The Frenchwoman received treatment for shoulder and leg injuries before losing 6-4 6-1.

Agnieszka Radwanska of Poland made it through to the fourth round for the second time in three years by seeing off Russian Anastasia Pavlyuchenkova.

The 14th seed prevailed 6-3 6-2 as her opponent made a string of unforced errors.

And 15th seed Agnes Szavay joined her in the last 16 after ousting Anabel Medina Garrigues of Spain in three sets.

Hungarian Szavay won the opener on a tie-break before losing the second 6-2 but rallied to win the decider 6-2.

In the men's singles, Roger Federer stayed on course for a sixth successive Wimbledon crown by overwhelming Frenchman Marc Gicquel in straight sets in round three.

Gicquel, who has only gone beyond the second round twice in nine Grand Slam appearances, was no match for the Swiss maestro and Federer dropped just seven games on his way to another highly convincing win.

An hour and 21 minutes was all Federer needed as he wrapped up victory 6-3 6-3 6-1 and the number one seed heads into the second week at the All England Club without having dropped a set.

Despite coasting into the last 16, Federer said his win wasn't as easy as it looked.

"The conditions were difficult again against a tricky opponent who played very aggressively,'' Federer said.

"The wind was swirling and I got down a break early and had to rally back but I think I played really well.

"Not losing a set (so far) is always nice and I get a couple of days off now and hopefully I will play as well again next week."

Federer's next opponent is 2002 Wimbledon winner Lleyton Hewitt.

The Aussie was also a straight sets winner on Friday as he beat Italian Simone Bolelli.

Hewitt, the 20th seed, breezed through the first two sets 6-1 6-3 but was taken to a tie-break in the third.

However, he made short of work of that, taking it 7-2 to close out victory.

Federer is looking forward to pitting his wits against another Wimbledon favourite and said: "It's a great challenge to play Lleyton, he is a former world number one and grand slam champion so it should be an exciting match."

David Ferrer, the fifth seed, saw his hopes go up in smoke as he was ousted 3-1 by big-serving Croat Mario Ancic.

The Spaniard simply couldn't get near the Ancic serve in the first two sets, losing both 6-4, but won a tie-break in the third to keep his hopes alive.

A nip and tuck fourth set also went to a tie-break but Ancic finally came through 7-3 to book his fourth round ticket.

Marcos Baghdatis, a semi-finalist last year and quarter-finalist in 2006, continued his fine form at Wimbledon by strolling past Simon Stadler of Germany.

The man from Cyprus got stronger as the match went on to prevail 7-6 6-4 6-2.

Baghdatis will now meet Spaniard Feliciano Lopez, who came through in four sets against American Bobby Reynolds.

Lopez took the first two sets 7-5 6-4 and, after Reynolds had won the third 6-4, the 31st seed closed him out 6-4 in the fourth.

Austrian Tomas Berdych, the 11th seed, saw his hopes ended at the third round stage by 22nd seed Fernando Verdasco.

Verdasco, from Spain, won two close-fought sets 6-4 6-4 before running away with the third 6-0 to claim the match.

Stanislas Wawrinka, the 13th seed from Switzerland, was handed a place in the fourth round after German opponent Mischa Zverev was forced to retire.

Zverev had lost the first two sets 7-5 6-1 when he decided he couldn't continue.

Marat Safin brought the day's action to a close by beating Italian Andreas Seppi in four sets.

The clock had just gone 9.25pm when Safin, who ousted number three seed Novak Djokovic in the previous round, held serve to close out the 29th seed 7-6 3-6 7-6 6-4.