More coaching news in the Jelena Jankovic camp. Just two weeks after firing Zeljko Krajan, the 20th-ranked Serb has hired one of her former coaches Diego Ayala to help her out ahead of the US Open. Ayala is currently with JJ in Stanford, where she's No.4 seed and after a first-round bye faces Coco Vandeweghe, and then they will go together to San Diego next week.

World No.15 Dominika Cibulkova, who also used to work with Krajan and ended the collaboration in spring, has now named her hitting partner Peter Miklusicak as her new coach. The Slovakian is also in Stanford, seeded third, and after a bye in the first round she will face qualifier Erika Sema. (source: Tennis.com, photos: © Neal Trousdale)

Last year fashion was the topic of Wimbledon with Bethanie Mattek Sands' tennis-ball jacket and Venus Williams' awkward zipper-outfit, but this year tenniswear is in the safe zone, except for Serena Williams' color challenge. Let's have a closer look.

Serena Williams challenged the White Clothing Rule by pairing the Nike Women's London Statement Baseline Dress with cerise shorts/knickers and a matching headband, while Wimbledon requires the outfits to be without solid mass of coloring and little or no dark or bold colors. Nike was not pushing the boundaries with defending champion Petra Kvitova, who was traditionally wearing a sporty, ordinary outfit.

Maria Sharapova, the fresh proud owner of a career Grand Slam, is always fully-prepared for fashion scrutiny, thinking out her outfits in detail from head to toe with the Nike team. For the touch of color that the white Wimbledon allows, Sharapova chose liquid lime. Here you can see how the Nike Women's Maria Slam Statement Dress looks from the back.

My favorite of the tournament is Maria Kirilenko in the Adidas Adipure line. The white dress with a pleated skirt features craft emerald contrasting stripes. Read more »

It was only in April that Jelena Jankovic started working with Zeljko Krajan as her coach and now in June they are already parting ways.

Unhappy with her progress and following her first-round loss at Wimbledon, Jankovic expressed dissatisfaction with the former coach of Dominika Cibulkova and Dinara Safina, while he was also appreciative of ending the cooperation with the Serb, describing her as undisciplined and not willing to apply the tactics he proposed. (source: Blic, photo: © Neal Trousdale)

Fifth seed Samantha Stosur lost in the second round of Wimbledon on Day 3, becoming the highest-seeded WTA loser of the tournament so far. But judging from the previous 44 years, the upset fever should not infect the Top 4 seeds soon. Women's Tennis Blog's contributor Omair went through the history of Wimbledon and realized that in the entire Open Era only once did all the Top 4 seeds lose before the semifinals.

I was looking for something particular, but I ended up finding facts revealing that since the beginning of the Open Era it has happened only once that all the Top 4 Wimbledon seeds fell before the semifinal stage of the tournament. Surprising! Isn't it? If you go to the ATP Tour, it has happened twice there.

WHICH YEAR WAS THE WEAKEST YEAR FOR THE TOP 4 SEEDS AT WIMBLEDON? 2008!

2008 – very recent past! Yes, the year Justine Henin retired for the first time, the year Ana Ivanovic won her first Grand Slam and the year Sharapova suffered from her shoulder injury.

Let's have a look at the results of the Top 4 seeds at Wimbledon 2008. The Top 4 seeds were: Ana Ivanovic (1), Jelena Jankovic (2), Maria Sharapova (3) and Svetlana Kuznetsova (4).

ANA IVANOVIC

Ivanovic got the top spot courtsey of her first (and to date only) Grand Slam, the French Open title, but she could not sustain the form that took her to the trophy. She won the routine first round at Wimbledon, but needed three sets to overcome Nathalie Dechy in the second round, where she saved match points in the second set before winning the match 6-7(2) 7-6(3) 10-8. The win over Dechy squeezed the energy out of Ivanovic and she went down meekly in her third-round encounter at the hands of Chinese wild card Zheng Jie. Ivanovic became the first top seed in nine years to fall before the quarterfinal stage of Wimbledon.

JELENA JANKOVIC

Jankovic was the second seed and a condenter for the No.1 ranking. She could have overtaken the No.1 spot, had she made the semifinals of Wimbledon 2008. Jankovic won her first two matches easily, but in the third round against Caroline Wozniacki, future No.1, she injured her knee. She went on to win the match in three sets, but went down in straight sets in the fourth round against Tamarine Tanasugarn. Read more »

Every Grand Slam is a unique opportunity for tennis fashion to step up and shine in the best light, so here at Women's Tennis Blog I always compile a collage of WTA photos to show the variety of styles in one place. For this French Open I played with movie making a bit and made this slideshow video. I hope you like it! Of course, don't forget to click the YouTube "Like" button if you do!

I included a lot of brands in the video, so that you get as comprehensive picture as possible. You can see players wearing Nike, Adidas,  Lotto, Reebok, Anta, Lacoste, Asics, Under Armour, EleVen, Fila and Adidas by Stella McCartney.

As you'll notice in the video, my pick for the best look of the 2012 French Open is Serena Williams, even though her display of the three-shade green Nike dress lasted for just one match (a long and exciting one, though). Also perfect was Ana Ivanovic and all the others who sported the Adidas Adizero style in lime and core energy.

Who's on your best-dressed list?

It's awesome being regular with these fashion overviews, so now we can easily refer to the past and compare. Check out Roland Garros designs in the past two years.

• 2011: Spring tennis fashion Roland Garros edition
• 2010: Roland Garros fashion radar – WTA outfits

Also, compare the claycourt looks with the styles sported on the blue courts in the Australian sun at Melbourne 2012.