Yesterday our loyal contributor Omair did a statistical analysis of the Australian Open quarterfinal between Kim Clijsters and Caroline Wozniacki, and the numbers spoke in Wozniacki's favor. Despite that, gut feeling told Omair that the Dane was more likely to lose and that's what happened. Now, let's see Omair's post-match review of the 6-3 7-6(4) match.

Going into today's match Wozniacki had a lot on the line, she had a lot of questions to answer, a lot of critics who she wanted to silence by winning this match. Wozniacki's No.1 ranking was on the line, her status as No.1 WTA player was under question, her ability to win a major was what she was seeking answer to when she took the Rod Laver Arena to face Kim Clijsters for a spot in the semifinals. She wanted a revenge, for it was Clijsters who had denied Wozniacki her first major in the 2009 US Open final, it was Clijsters who denied Wozniacki her first year-end Championships when she beat the Dane in the final in 2010, it was Clijsters who dethroned Wozniacki from the top spot for a week in 2011.

Wozniacki had a lot of reasons to be confident when she entered the Rod Laver Arena. There were questions surrounding Clijsters' ankle, which she twisted badly in her previous match, her performance so far at the Aussie Open was cleaner as compared to Clijsters' as per the stats, she had not lost a set while entering into the match, as against Clijsters who lost a set in her previous match to Li Na. Clijsters had never beaten a reigning No.1 at a Grand Slam in her previous five encounters at Grand Slams with the then reigning No.1s. But it all could not help Wozniacki and it all could not stop Clijsters from crushing the world No.1 to book a semifinal spot.

Going into today's match Clijsters was on a mission, since she had already announced that this would be the last Australian Open of her career. She wanted to end it in style, and yes she did it in style to book herself a semifinal spot against the on-fire Victoria Azarenka. She got her first win over a reigning No.1 in a Grand Slam, and did that in authoratative way by defeating Wozniacki in straight sets. What did Clijsters do to emerge as the winner, when the numbers were in Wozniacki's favour? Let us compare the stats of their quarterfinal encounter with the stats of their previous four matches that earned them the quarterfinal spot.

Wozniacki entered the match as the cleaner player, but Clijsters came out of the match as a winner and a cleaner player. Here is a comparison of Wozniacki's stats of the first four matches and her quarterfinal encounter:

Wozniacki's first serve percentage dropped dramatically as compared to her first four matches, as did her winning percentage on those first serves. She entered the match with a positive differential of winners and unforced errors, but she left the match with a whopping negative 13 differential. I think the table speaks in itself as to why Wozniacki lost. Read more »

In Omair's statistical preview of the Australian Open quarterfinal between Victoria Azarenka and Agnieszka Radwanska the numbers were more on Radwanska's side, however, the Pole lost 6-7(0) 6-0 6-2. Omair would now like to have a closer look at what happened there.

When Victoria Azarenka entered the Rod Laver Arena today, she had something going on in her mind, her possibility of overtaking the top spot from Caroline Wozniacki, and that thing seemed to affect her in the first set tiebreak where she could not win a single point against Agnieszka Radwanska. But from then on, it was all Azarenka and she solidified her status as title contender with this win.

Radwanska walked on to the Rod Laver Arena today with a mission of her own, she wanted to make it fifth time lucky and enter into her first Grand Slam semifinal match and it seemed that she would, after the first set. But from then on Radwanska could not keep that level and lost to the red hot Azarenka.

Radwanska, just like Wozniacki in her quarterfinal, entered the match with cleaner stats, and Azarenka, just like Kim Clijsters, entered the match with not so good stats, but both Clijsters and Azarenka emerged out of their matches as the cleaner players and winners.

AGNIESZKA RADWANSKA STATS

Radwanska entered the match with 75% points won on her first serves when they landed in and her first serve percentage did not flop, but her winning percentage on the first serve dropped dramatically, and to add to that so did her winning percentage on second serves. You can never win a match against Azarenka by winning just 29% of your second serves or 47% of your first serves. As if that was not enough, Radwanska entered the match with a positive winner-UE differential of 27, but came out of the match with a negative 15 winner-UE differential. Radwanska will have to wait for the next Grand Slam to see if she can manage to make it to the semifinals. Read more »

After showing you his numbers analysis for the quarterfinal between Caroline Wozniacki and Kim Clijsters, our stats expert Omair made another Australian Open quarterfinal preview for you, Victoria Azarenka vs. Agnieszka Radwanska.

Agnieszka Radwanska has lost a set so far at the Australian Open, while Victoria Azarenka is yet to lose more than four games in a set. Despite that, when we look at numbers, Radwanska comes out as the cleaner one.

If we look at the Grand Slam results, we see that it is the sixth quarterfinal appearance for Azarenka and fifth for Radwanska, while Radwanska has yet to move beyond the quarterfinal stage of a major tournament, Azarenka did it at last year's Wimbledon when she lost to the eventual champion, Petra Kvitova, in the semis. Interestingly, it was Azarenka's fifth Grand Slam quarterfinal appearance when she finally moved beyond the quarterfinal stage, and this is Radwanska's fifth quarterfinal appearance. Azarenka and Radwanska are friends – will Radwanska follow in the footsteps of her friend and make it fifth time lucky or will she fade away, only time will tell us.

If we look at their head-to-head record, Azarenka has won six of their nine encounters and their latest coming at this year's Sydney in the semifinal, where Azarenka won in three sets.

Let us have a look at what the numbers suggest about their form so far at the Australian Open.

When we look at numbers, they are quite close in almost all departments. However, Azarenka has an upper hand by a huge margin in the 2nd serve winning percentage, but she also has a huge number of double faults, averaging at 4+ per match so far in the tournament (equal to Kim Clijsters' double faults). Read more »

Dear readers, our now already famous stats expert Omair couldn't resist the urge and found time in his busy schedule to analyse the upcoming Australian Open quarterfinal between Kim Clijsters and Caroline Wozniacki. Numbers speak in Wozniacki's favor, but is everything in numbers? Let's see if we can conclude something.

There are so many things you plan on doing, but you you never get to complete them. That is what happened with me, when I had planned on making a probability analysis for the Australian Open 2012, it never got complete and then I got heck of busy. Being an audit trainee no doubt has its perks of excessive late sittings and no weekends, but I just could not resist my urge to analyse the Australian Open quarterfinals, using the performance of the quarterfinalists so far in the tournament. I will be using the stats to look into the quarterfinal showing, as to who has a better shot at making the semis. Let's first analyse Kim Clijsters and Caroline Wozniacki.

Kim got her ankle twisted in her fourth round epic battle against Li Na. Wozniacki won't get a better chance than this to avenge her previous losses to the former world No. 1, after all it was Clijsters who denied Wozniacki the taste of her first major when she beat the Dane in the US Open final in 2009.

Wozniacki has yet to lose a set in this tournament, while Clijsters has already lost one to Li, and was on the brink of defeat in straight sets but turned it around to emerge as a winner. Thousand dollar questions are: Will Clijsters' ankle hold to let her complete in the last Australian Open of her career? Will Clijsters have enough in tank to battle past Wozniacki who has no doubt the best defensive skills at the moment?

Clijsters is 2-0 against Wozniacki, but their last meeting at the year-end Championships in 2010 went the distance. Let us have a look at what the numbers say when we see each player's first four matches at the Aussie Open 2012:

Wozniacki has +8% advantage in the first serves, but what is important is that although Wozniacki has higher 1st serve percentage, Clijsters' 1st serve winning percentage is much higher than Wozniacki's, but so are her double faults. Clijsters has been serving 4+ double faults on average in each match so far, which means losing her serve at least once in each match by only double faults.

What is more worrying is Clijsters' ratio of winners and unforced errors. If you look at the number of winners, Wozniacki is not far behind, but if you look at the number of unforced errors Wozniacki comes out as a cleaner one by a huge margin. Clijsters has a differential of negative 24, whereas Wozniacki has a positive differential of 4. Break point conversion rate, receiving points won percentage again go in Wozniacki's favour. The department where Wozniacki lags is the points won at net. While Clijsters has lost only one point out of her 18 net trips (95%), Wozniacki managed to win only 68% of her net trips. Read more »

The fourth round of the Australian Open feautred a rematch of last year's final and the outcome was the same – Kim Clijsters defeated Li Na. The score 4-6 7-6(6) 6-4 took the Belgian to the quarterfinals, but within those numbers hide four match points, a painful ankle injury at 3-3 in the first set and a gruelling fight of both players.

With her foot thickly wrapped and 2-6 in the second set tiebreak, Clijsters started her big comeback by winning six points in a row to take the match to the third set, which she opened with a 4-0 lead. Li then slowly recovered to 5-4 down, but it was Clijsters who closed out the match to her advantage.

After the victory, the Belgian winner of four Grand Slam titles said that it was one of her best comebacks, while the disappointed Li can live off the number of matches she won in January, a great improvement from her horrible second half of 2011.  Read more »

Besides doing yearly fashion retrospections for specific WTA players, Women's Tennis Blog is famous for reviewing outfits for every Grand Slam. The Australian Open is entering its second week and the time is just right for us to have a closer look at what the players are wearing. Last year Venus Williams grabbed all the attention with her EleVen designs, but the American is sadly absent this time. In 2012 the spotlight is more evenly distributed and brands such as Nike, Adidas and Fila are leading the pack.

Caroline Wozniacki’s love life is booming, at least its online representation suggests that, and her fashion designer Stella McCartney opted for the color of passion for the world No.1’s Australian Open. Wozniacki accessorized the red dress with a heart-shaped Danish flag pendant that her boyfriend Rory McIlroy gave her for Christmas.

Adidas Adizero used a shade of red for their predominantly peach dress worn by Ana Ivanovic, Daniela Hantuchova and Sorana Cirstea.

Serena Williams is wearing a blue Nike dress with wide tank straps and pleated bottom.

Read more »

Serena Williams, Maria Sharapova and Petra Kvitova didn't sweat much in their third round victories at the Australian Open.

Serena's opponent Greta Arn was the closest to challenging the American in the beginning of the first set, when she had a break point in the opening game, but that was all from the Hungarian who was quickly overpowered 6-1 6-1. Despite that, Serena claims that she's nowhere near her desired form and is just playing through the rust.

Sharapova was also quick, losing just three games to Angelique Kerber to reach the fourth round 6-1 6-2. The Russian has actually lost just five games so far at the tournament. Read more »

The 2012 has gained its full swing with the Australian Open, and our loyal contributor and reader John Bolan would like to share his predictions of how the Top 10 rankings will look like at the end of the season. Don't forget to share your Top 10 picks in the comments, as John will send the person whose predictions turn out to be the closest to the actual 2012 year-end Top 10 a picture with an autograph of a Top 10 player. Nice incentive!

Once again, it is time to pick the Top 10 players in the order they will finish on December 31, 2012. We have had a few weeks to observe which players have played well this year. Logic, injuries and where the players finished for 2011 are the main criteria used to make these picks.

My pick for number 1 in 2012 is Victoria Azarenka (I also picked Victoria for number 1 in 2011). She squeaked by Maria Sharapova for third place last year, but is definitely a rising young star whose time has come. Maria is my pick for the runner-up spot – number 2. Let’s hope she stays healthy for the remainder of the year.

Three players who have already been injured this year are Kim Clijsters, Serena Williams and Andrea Petkovic. Do we take a chance and put any of them in the Top 10? Kim is my #3 pick and Serena #4. Although Andrea is the most sensational player in women’s tennis, she is seriously injured and will miss months on the tour in 2012. Read more »

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)

Following a 6-3 6-2 victory over Tamira Paszek and going 46-0 in Grand Slam openers, Serena Williams defeated Barbora Zahlavova Strycova 6-0 6-4 in the second round of the Australian Open and won an impressive 500th match in her career. Even more so, it’s Serena’s 16th consecutive match win at the Australian Open, the tournament she has won five times.
Here’s what the 13-time Grand Slam champion, who now doesn’t even know what to pick for her next milestone, said about the achievement:

It's great. I haven't even thought about it. It's like the ultimate. It's really, really cool. The first thing I asked, of course, Is there anyone that achieved a thousand?  I guess not. I never will get there either. But it's really cool.  500 is a lot of matches to play, let alone to win, so it's pretty cool.

Two points before the end of the match against Zahlavova Strycova, Serena twisted her right ankle, but luckily there was no pain and it was a different ankle from the one she injured this month in Brisbane. After the match, Serena assured the fans that both her ankles are doing good.

Additional info: Together with Andy Roddick Serena is playing the mixed doubles and they are facing top seeds Kveta Peschke and Mike Bryan in the first round. Serena already has to Grand Slam mixed doubles titles to her name, but she hasn’t played that type of competition at a major tournament since 1999.