( CNN ) -- World No . 1 Victoria Azarenka made it 15 straight wins in 2012 after she defeated Yanina Wickmayer to reach the Qatar Open semifinals . The Belarusian , who claimed her first grand slam title at the Australian Open in January , beat her Belgian opponent 6-0 6-4 in just over an hour . Azarenka , the top seed , revealed a change in her emotional approach over the past year has reaped rewards and propelled her to the top of the rankings . `` Last year at this time I was a little bit of a mess , '' she was quoted as saying on the WTA Tour 's website . `` I could n't control any of my emotions . Ambitious Azarenka downplays the pressure of being No . 1 . `` That 's one thing when I came back after Doha to Indian Wells I had to change , my mentality on the court , the way I approach a match , the way I approach tough moments . `` Now , I do n't try to think about why something is happening to me . I just try to accept it and deal with it . '' Azarenka certainly did n't look under any duress during her victory over Wickmayer , taking the first set in just 21 minutes . `` I would consider the first set as a perfect set . I was really going for every shot I could and everything was working , '' Azarenka said . `` In the second set I had opportunities in every game , I just could n't convert them . But it 's important the way I finished the second set . It was the same way as I started the match . '' Azarenka 's reward for another impressive win is a final four clash with Agnieszka Radwanska after the Pole beat Christina McHale , from America , 6-1 6-1 . Third seed Samantha Stosur , from Australia , also booked her place in the last four with a 6-2 2-6 6-3 win over Romanian Monica Niculescu . The 2011 U. S. Open champion said : `` It 's one of those matches where when you are in control , you have to keep going and keep going and keep going , and know you 're going to miss a few but you 're going to make more than you miss . `` Monica plays a unique game that at times can put you off , but at the end of the day I 'm happy with the way I bounced back in the middle of that third set . '' Stosur will play France 's Marion Bartoli in the semis after the fifth seed defeated Lucie Safarova , from the Czech Republic , 7-5 4-6 6-1 .
World No . 1 Victoria Azarenka wins Third straight match in the end of the day . Belarusian beats Yanina Wickmayer to reach Qatar Open semifinals . No . 3 seed Samantha Stosur defeats Mario Bartoli 6-2 four -6 6-3 . Agnieszka Radwanska and Mario Bartoli also through to final 2 .