( CNN ) -- Caroline Wozniacki has regained the women 's world number one ranking from Belgium 's Kim Clijsters , after beating Shahar Peer to reach the semifinals of the Dubai Tennis Championships on Friday . The Dane eased past the ninth seed 6-2 6-4 , and will now replace Australian Open champion Clijsters when the new WTA rankings are published on Monday . Clijsters , who skipped the hard-court event in the United Arab Emirates , will have held the number one ranking for just seven days . The 27-year-old rose to the top spot again -- having first done so in 2003 -- when she reached the last four of the Paris Open , but left Wozniacki with a chance to reclaim the position when she lost to Petra Kvitova in the final . CNN Blog : Can Murray become a grand slam champion ? The 20-year-old Wozniacki will now remain at the top of the rankings at least until after the U.S. tournament in Indian Wells which starts on March 23 . However , the 2009 U.S. Open finalist -- who is yet to win a grand slam title -- insisted winning tournaments is more important to her than being No . 1 . `` I 've said all along I was n't sure about whether I could become number one this week , and that my focus really is not upon that , '' she told reporters . `` For the moment it 's more important to concentrate on what I have to do and try to win the tournament . '' Her achievement was marked in a much more low-key fashion then when she became the 20th woman in history to reach the summit in October last year . Due to fears over the safety of Peer -- who became the first woman from Israel to play in the Arab state in 2010 -- the match was played on a remote outside court with few spectators and heavy security , where there were no on-court celebrations . Next up for Wozniacki will be Serbian former world No . 1 Jelena Jankovic , who defeated Australian fourth seed Sam Stosur of Australia in three closely-contested sets . Sixth seed Jankovic eventually triumphed 6-3 5-7 7-6 ( 7-4 ) against world No . 5 and French Open runner-up Stosur . In the other half of the draw , two-time grand slam champion Svetlana Kuznetsova of Russia beat Polish eighth seed Agnieszka Radwanska 7-6 ( 9-7 ) 6-3 in the penultimate quarterfinal . The Russian will next face Italian 11th seed Flavia Pennetta , who thrashed Russia 's Alisa Kleybanova 6-2 6-0 in the late match . Elsewhere , at the men 's Marseille Open , Swedish top seed and world No . 4 Robin Soderling progressed to the semifinals with an easy straight-sets win over France 's Michael Llodra . The two-time French Open finalist came through 6-1 6-4 , and will next play Dmitry Tursunov after the Russian defeated Austrian fourth seed Jurgen Melzer 6-4 2-6 6-1 in Friday 's closing match . In the other half of the draw of the ATP World Tour hard-court tournament , world No . 7 and Wimbledon runner-up Tomas Berdych was knocked out by Croatia 's Marin Cilic . The former world number nine swept aside his Czech opponent 6-3 6-4 to book his place in the semifinals of the French event , where he will face third seed Mikhail Youzhny . The Russian ended home hopes with a 6-4 2-6 6-4 win over sixth seed Jo-Wilfried Tsonga .
Denmark 's Caroline Wozniacki is set to replace Kim Clijsters as world No . 1 . Wozniacki reclaims top spot after reaching the last four of tournament in Dubai . Clijsters has been there for only a week after reaching final of Paris event . Comment: