Dinara Safina will finally grace Centre Court today when she takes on former champion Amelie Mauresmo in the fourth round.

Despite being top seed and world number one, Safina has played her opening three matches on either Court One or Court Two, while ninth seed Caroline Wozniacki and world number 59 Maria Kirilenko's second-round match was staged on Centre Court.

It is unlikely to irritate the fiery Russian too much however, as long as she gets the better of 2006 winner Mauresmo this afternoon and goes on to lift her first grand slam title after defeats in three previous finals.

"This year she (Mauresmo) is playing very well, I think she's back in her best shape," said Safina, runner-up at the year's first two grand slams and also at Roland Garros in 2008.

"She likes playing on grass. I mean, she won Wimbledon. I think it's not going to be an easy match. I'm looking forward to it but I just want to focus on myself, play my game. Let's see who's going to be stronger on the day."

Safina admits she is annoyed by criticism of her being ranked world number one despite not having won a grand slam title, but feels she could still surprise a few people with victory at the All England Club.

"Everything is possible," added the 23-year-old, who has reached the fourth round in SW19 for the first time.

"There is nothing impossible in this. Day to day I'm playing better and better. I will take one match at a time.

"Definitely for me it's less pressure here because nobody is expecting me to win this. For me it's better. I play, I go out there, I enjoy. Till now it's working."

All eight fourth-round matches are scheduled to be played today, with Safina and Mauresmo meeting for the first time in a grand slam since the 2006 US Open, when it was Mauresmo who topped the rankings. The 29-year-old Frenchwoman has not reached the quarter-finals of any grand slam since winning Wimbledon that year.

Perhaps the most intriguing clash sees defending champion Venus Williams take on former world number one Ana Ivanovic, who saved a match point in the first round but looked close to her best in beating Samantha Stosur in the third round.

An all-Russian and all-Elena clash takes place on Court Two, with fourth seed and Olympic champion Elena Dementieva up against compatriot Elena Vesnina, followed by Daniela Hantuchova taking on second seed Serena Williams.

Four teenagers have advanced to the last 16, with two of them doing battle on Court Four, 18-year-old Caroline Wozniacki of Denmark taking on 19-year-old German Sabine Lisicki.

Lisicki took the biggest scalp of the championships so far, knocking out French Open champion and fifth seed Svetlana Kuznetsova on the Russian's 24th birthday on Saturday.

But equally impressive was the performance of the youngest player left in the draw, 17-year-old qualifier Melanie Oudin beating sixth seed Jelena Jankovic in the third round despite losing the first set.

Oudin takes on 11th seed Agnieszka Radwanska on Monday, while 19-year-old Victoria Azarenka faces Nadia Petrova and Virginie Razzano and Francesca Schiavone clash on Court 18.

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