Comeback player Jelena Dokic of Australia, ranked 187th in the world, continued her impressive run at the 2009 Australian Open with a 3-6 6-1 6-2 victory over No.11 seed Caroline Wozniacki.

Previously at the tournament Dokic had defeated Tamira Paszek and Anna Chakvetadze, but I was skeptical she would be strong enough to go past the young star Wozniacki too, who made her Australian Open debut last year and then reached the fourth round already.

The lead that Wozniacki established after breaking Dokic in the fourth game of the first set was crucial and gave the young Dane the victory in the first set. As Dokic had as much as six break points in the first set and converted none of them, I was afraid her maximum at this year’s Australian Open had already been reached. But no! The 25-year-old Dokic spectacularly won the next two sets, and booked herself a place in the fourth round. Amazing!

It seemed like the 18-year-old Dane was a bit intimidated by all the story behind the former world No.4 Dokic, the lowest ranked player left in the draw, especially because they had never met before.

The Wimbledon semifinalist Dokic has today made her best result at the Australian Open. In 1999 she reached the third round.

Dokic will next face either fifth seed Ana Ivanovic of Serbia or No.29 seed Alisa Kleybanova of Russia, who are currently playing the third set. Warning: If you are a big Ana fan, don't watch that match, you might get a heart attack. (photo: Getty Images)

Third seed Dinara Safina had no trouble defeating seed No.25 Kaia Kanepi 6-2 6-2.

The Russian advanced to the fourth round of the 2009 Australian Open, breaking the Estonian two times in both sets, and losing none of her own service games.

Safina will next play the winner of the Daniela Hantuchova vs. Alize Cornet match.

Also advancing to the fourth round was tenth seed Nadia Petrova. Her opponent Galina Voskoboeva retired after the first set. (photo: Getty Images)

Waiting for the fifth day of the 2009 Australian Open to start, I had some fun making a video which shows what kind of outfits women’s tennis players have been wearing this fortnight. To make the video more interesting, I added some comments to the slides.

My favorites: Well, it may be shocking, but I would go for Ana Ivanovic’s purple adidas dress. I absolutely love the color, and I think Ana looks beautiful in it. And even though Ana wore it last year too, I’m not even beginning to get bored with it, which is a great sign.

As you probably know, I’m a great fan of Stella McCartney’s outfits, and beautiful Maria Kirilenko wore a gorgeous one at the Australian Open, but how can I count her when she lost in the first round of singles already. We barely got the chance to see the dress.

Venus Williams sported refreshing colors, a bright yellow dress with pink shorts underneath. Great! However, I’m too tired of the design, I think you understand.

One of the favorites for the title, sixth seed Venus Williams, lost as early as in the second round of the Australian Open, being beaten by world No.46 Carla Suarez Navarro.

The Spaniard saved a match point before beating Williams 2-6 6-3 7-5, who is yet to add an Australian Open trophy to her collection of Grand Slam titles. Suarez Navarro is playing only her fourth Grand Slam event, but she already has one notable results, the quarterfinals at last year’s French Open.

Venus started the third set strong, taking a 4-1 lead, but Suarez Navarro dragged herself back into it and saved herself on match point at 5-5. She then broke the next game and served out for a famous victory.

Second seed Serena Williams was extremely close to losing the second set, but the three-time Australian Open champion eventually defeated Argentine Gisela Dulko in straight sets 6-3 7-5.

Dulko wasted six set points and saved five break points before Serena won the game, then held her own serve to even the set at 5-5. Serena then broke again, after another long game featuring six deuces, before holding her serve to win the match with an ace.

Although Dulko was having a 5-2 lead in the second set, and although she had those six set points, Serena was calm, as if she had known she was going to win. Serena confirmed my impression by saying: "She had a couple of opportunities but I always felt I wasn't going to lose."

Except for Venus Williams and seed No.14 Patty Schnyder, all the seeds were victorious on day 4. (via BBC, photos: Getty Images)

Seed No.20 Amelie Mauresmo of France defeated world No.134 Elena Baltacha 4-6 6-3 6-2 in the second-round match full of unforced errors.

The Australian Open champion Mauresmo started off well, breaking Baltacha in the third game. But Baltacha then won four games in a row for a 5-2 lead. However, serving for the set at 5-3, Baltacha got nervous and Mauresmo broke her serve. Still, the Briton eventually won the first set 6-4.

In the second set Mauresmo broke Baltacha at the very beginning, and despite many ups and downs of both players during the set, that initial break kept Mauresmo’s hopes of advancing alive, as it took the match to a deciding set.

In the third set Baltacha broke Mauresmo in the first game, and had a 2-0 lead, but since then the Frenchwoman won all the games and secured her spot in the third round of the Australian Open.

Other notable results so far on day 4:

Fourth seed Elena Dementieva advanced to the third round beating Iveta Benesova 6-4 6-1, seed No.18 Dominika Cibulkova crushed Yung-Jan Chan 6-0 6-2, while No.14 seed Patty Schnyder lost to Virginie Razzano 6-3 6-1. Victoria Azarenka, seeded 13th, advanced when her opponent Tathiana Garbin retired.  Kateryna Bondarenko, whose upset of Agnieszka Radwanska in the first round has remained the biggest by now, made one more step further by reaching the third round. (photo: Stephane Martinache)