Caroline Wozniacki, Jelena Jankovic, Li Na, Kim Clijsters, Victoria Azarenka and Agnieszka Radwanska all advanced to the fourth round of the Australian Open and only Azarenka lost more than four games in a set.

Wozniacki and Jankovic will meet in the fourth round, after Wozniacki moved on with a commanding victory over Monica Niculescu 6-2 6-2 and Jankovic cruised past Christina McHale 6-2 6-0, playing well in crucial moments and saving ten break points. Even though Jankovic lost her last three meetings with Wozniacki, the Serb said it was in her overall bad period, and now her motivation and confidence are much greater.

A rematch of the last year's final is also awaiting in the fourth round as Clijsters faces Li. Clijsters beat Daniela Hantuchova 6-3 6-2 in her third match of the tournament, while Li advanced when Anabel Medina Garrigues retired with an ankle sprain after only three games. In the 2011 title match Clijsters defeated Li 3-6 6-3 6-3, in what was a positive experience for both players and the two are excited to repeat the challenge.

Victoria Azarenka, who will play Iveta Benesova in the fourth round, faced a fresh first-time WTA titlist Mona Barthel and won the first set against her in just 31 minutes, hitting only three unforced errors. Barthel brought more resistance in the second set, but after four match points Azarenka defeated her 6-2 6-4.

Julia Goerges moved into the second week of a Grand Slam for the first time after overcoming Romina Oprandi 3-6 6-3 6-1, the Italian who upset tenth seed Francesca Schiavone in the second round. Next for Goerges is Agnieszka Radwanska, the 6-2 6-2 winner over Galina Voskoboeva.

The second set of third round matches awaits! (photo: Tidalist)

Top seed Caroline Wozniacki stormed through the first set of her second round match at the Australian Open 6-1 in just 28 minutes, but Georgian Anna Tatishvili had much more hitting to offer. In the second set, which was almost three times longer, the world No.1 found herself trailing 1-4, and at 4-5 she was on the brink of losing the set when Tatishvili had a set point. Wozniacki then evened the score and closed the match quickly to 6-1 7-6(4).
First serve was working exceptionally well for Wozniacki, who hit nine aces in the match and afterwards joked that she felt a little bit like John Isner. Next for the Dane is Monica Niculescu who beat Pauline Parmentier 4-6 6-4 6-1 in the second round.

Kim Clijsters, Li Na, Agnieszka Radwanska and Victoria Azarenka were all express. Clijsters took just 48 minutes to defeat Stephanie Foretz Gacon 6-0 6-1, Li needed 31 minutes per set to get past Olivia Rogowska 6-2 6-2, Radwanska beat Paula Ormaechea 6-3 6-1 in eight minutes over an hour, while Azarenka remained undefeated this season by rolling past Casey Dellacqua 6-1 6-0. (photo: sr_cranks)

Caroline Wozniacki experienced no problems with the wrist injury which troubled her in the quarterfinal loss to Agnieszka Radwanska in Sydney, even though she did enter her opening match at the Australian Open nervously, not sure of how the injury would behave.

Still, it was all good for the world No.1 and she brushed aside Anastasia Rodionova of Australia 6-2 6-1. Rodionova made 36 unforced errors, three times more than Wozniacki, and converted zero break opportunities. World No.83 Anna Tatishvili of Georgia will be Wozniacki's opponent in the second round.

Working the Tomato Adidas by Stella McCartney dress, Wozniacki is battling to retain her top ranking this fortnight. If she doesn't manage to reach the fourth round, and seed No.13 Jelena Jankovic is her biggest opponent on that way, Wozniacki will not be No.1 any more.

Additional info: Over the weekend we had two tournament finishes, with Victoria Azarenka and Mona Barthel emerging as titlists, and on Monday at the Australian Open both the players advanced. Sydney champion Azarenka breezed past Heather Watson, while Barthel, who surprised in Hobart by going all the way to the title from qualifying, won the first set against Anne Keothavong 6-0 but then Keothavong retired because of food poisoning. (photo via Adidas)

Dear readers, professional tennis instructor Florian Meier from OnlineTennisInstruction.com is back with another guest post, this time presenting his take on the Australian Open women's draw. Florian's previous contributions to Women's Tennis Blog included in-depth analysis of Sabine Lisicki's game and US Open predictions. Enjoy Florian's preview!

Hey everyone. The Australian Open is about to start and this year the field seems to be wide open without clear favorites. Also many of the top players are struggling with injuries and Andrea Petkovic already had to withdraw from the event because of a back injury. In this article I want to give you my view on who has the best chances to win the tournament.

I decided to pick out four players who I believe have the biggest chance to win this year’s Australian Open title.

1. PETRA KVITOVA

Petra Kvitova is currently in a close battle with Caroline Wozniacki for the world number 1 ranking. She had her breakthrough winning Wimbledon last year and I think she has very good chances to become the most successful player in 2012.

Her game is big, she played well in the warm up matches to the tournament, and she seems to have the confidence and belief now.

CHECK OUT HOW WELL KVITOVA IS PLAYING IN THIS VIDEO

2. KIM CLIJSTERS

Clijsters is the defending champion and in my opinion always a threat at any Grand Slam. She had a tough second half of the season in 2011, where she did not play much at all because of several injuries.

Having had such a long preparation could be an advantage for her because she is probably in great shape right now. At the warm-up tournament in Brisbane she seemed to be in strong form but had to pull out because of a hip injury. The latest reports are saying that she is practicing at 100% though and therefore I think she is one of the favourites to win the title.

3. SERENA WILLIAMS

As usual it is difficult to assess what kind of form Serena Williams is in for the Australian Open. She has not played much before the tournament but she obviously likes the tournament, having won it five times in the past.

In a recent interview I heard Brad Gilbert, famous coach and expert, talk about how hard Serena was preparing and how well she looked out on the practice courts. An ankle injury forced her to pull out of Brisbane but she has also been seen practicing hard on site in Melbourne. She has not played many tournament matches in a while so it will be crucial for her to get through the first couple of rounds.

If she gets through the first couple of rounds and stays healthy she will definitely be one of the top favourites for the title. Read more »

Caroline Wozniacki opened her competitive tennis season at the Apia International Sydney and after surviving the three-set challenge against Dominika Cibulkova in the second round, the top-seeded Dane fell in the quarterfinals to Agnieszka Radwanska. On the other hand, world No.2 Petra Kvitova stormed into the semifinals with a 6-0 6-4 victory over Daniela Hantuchova, last week's Brisbane finalist, and is now only two matches away from overtaking the top ranking from Wozniacki.

In the previous round Wozniacki worked her way past Dominika Cibulkova  7-5 2-6 6-4, the player she lost to in her opening match in Sydney last year. In the quarterfinals, Wozniacki was serving for the match at 6-3 5-4, but Radwanska complicated the scenario by winning three straight games to take the match to the third set. Somewhere in the middle of the third set Wozniacki had her left wrist strapped and looked more and more affected by the injury. Finally she lost 3-6 7-5 6-2 and the seriousness of her injury will be determined tomorrow.

Last year's Sydney champion Li Na, who defeated Lucie Safarova 6-2 7-6 (3), will be Kvitova's opponent in one semifinal, while the other semifinal will be played between Victoria Azarenka, who beat Marion Bartoli 7-5 6-4, and Agnieszka Radwanska. (photo: Ralf Reinecke)