Saying "It’s sport" on her Facebook page, Petra Kvitova consoled herself after a 1-6 7-5 6-2 loss to Li Na in the semifinals of the Apia International Sydney. As you know, Kvitova could have become No.1 ahead of the Australian Open had she won the title in Sydney.

Defending champion Li seemed to be free falling towards defeat when Kvitova won the first set by giving up only one game and broke in the beginning of the following set to lead 3-1. However, the French Open champion Li fearlessly clawed back into the match and scored her fourth victory of the week, after wins over Ekatarina Makarova, Chanelle Scheepers and Lucie Safarova. Remember that in the entire post-French Open part of last season, i.e. since June, Li won a total of only seven matches.

Li’s opponent in the final will be Victoria Azarenka, who also overcame a 6-1 deficit to beat Agnieszka Radwanska 1-6 6-3 6-2, the conqueror of No.1 Caroline Wozniacki in the previous round. Li is 4-2 in career meetings with Azarenka, but it was Azarenka who handily won their last clash 6-2 6-2 at the WTA Championships at the end of 2011. (photo: © Neal Trousdale)

There was a big women’s tennis exhibition event in Singapore during the weekend, and elsewhere in Asia there was more relaxed tennis going on – the reigning Roland Garros champion Li Na welcomed fellow WTA star Sabine Lisicki and men’s tennis greats Pete Sampras and Carlos Moya in her hometown of Wuhan, China, for an exhibition tournament. Read more »

On Monday our guest poster and stats lover Omair dug us into the numbers of his detailed analysis about the number of wins year-end Top 10 players scored over Top 10 players in 2011 and their best tournaments. Now it's time for Part 2 and a different perspective – results of the Top 10 stars approached through their losses.

First have a look at the table showing average rank of players who defeated each of the year-end Top 10 players and the lowest-ranked player to beat year-end Top 10 players during 2011. 

Vera Zvonareva needs to be mentioned here for her consistency as she is the only one of the Top 10 who was not beaten by a player ranked outside Top 35, while the rest of her colleagues from this elite group were beaten at least twice. The lowest-ranked player to defeat Zvonareva during 2011 was Tsvetana Pironkova, ranked 33rd (seeded 32nd) during the third round of Wimbledon.

Of Zvonareva's 22 losses only three came at the hands of players ranked between 30 and 35 and interestingly they came at the hands of players ranked 31, 32, and 33. Also, a total of only three losses came at the hands of players ranked between 21 and 29, while the rest of 16 came at the hands of Top 20 players. Average rank of Zvonareva's conquerors was 15, while the average rank of the conquerors of all the remaining Top 10 players was not even within Top 20.

Victoria Azarenka also needs to be mentioned here, because only five of her 17 losses came at the hands of players ranked outside Top 20, and of those five losses two came at the hands of Serena Williams who had low ranking due to her health problems and lack of play. Average rank of Azarenka's conquerors in 2011 was 23.

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We can soon start calling our reader Omair a stats expert. After seeing his "Comparative analysis of Top 10 players and their performance at big tournaments in 2011" received so well, Omair eagerly rushed to thrill us with more analysis, this time focusing on the year-end Top 10 players and the ranking of opponents that they beat in 2011 (Part 1) and on the ranking of opponents that beat them (Part 2). Let the tables do the talking!

The table above shows the number of tournaments where a year-end Top 10 player defeated more than one Top 10 player. Petra Kvitova tops here with three tournaments, at two of which she defeated three or more Top 10 players en route to the title (Madrid and WTA Championships). World number one Caroline Wozniacki is the only Top 10 player who did not beat two Top 10 players in a single tournament.

Let's continue with tables showing tournaments won by each Top 10 player and tournaments where the player (though did not end up winning the event) ended up beating two or more Top 10 players.

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In the beginning of the year our loyal contributor John Bolan made a prediction of how Top 10 would look like at the end of the season and a lot of readers presented their Top 10 picks in the comments. Now that the tennis 2011 has ended, I thought it was perfect time to ask John to do a comparison of the prediction and the actual season-ending rankings. He was eager to accept my proposal. Continue reading to see the shocking changes over the last 11 months, such as Justine Henin and Dinara Safina not playing any more and Petra Kvitova, who was never even mentioned, joining the elite big time.

On January 8, 2011 the Women’s Tennis Blog published my article "Who will be Top 10 players at the end of 2011?".  My picks were listed with reasons why I chose them. Many fans used the comment section to submit their picks. Now that the year is over, let’s find out how we did.

Most of us only named about 5 out of the 10 Top finishers. The reason that we did so poorly was the injury factor. Five of the top players were injured for most of the year – Justin Henin, Kim Clijsters, Dinara Safina, Serena Williams and Venus Williams. Most of us had at least 3 of these injured stars on our Top 10 list. The most difficult factor in picking the Top 10 is trying to guess who will not be able to play a full season and 2011 was an unusual year with so many of the top stars injured for so long.

No one picked the number 2 finisher – Petra Kvitova. Only one person picked Marion Bartoli and only one picked Andrea Petkovic. These omissions hurt the overall accuracy of our picks. Read more »