Catch up on all the WTA news from the past seven days, including a breakthrough for Polona and the key to Maria's long-lasting success.
WTA Staff

Every week there's a lot happening on the WTA - on the court, off the court, by the numbers, even a few tweets... catch up on it all in the WTA Diary.

Polona Hercog awakened a slumbering season at the Family Circle Cup this week with a string of sparkling performances en route to the semifinals. Hercog had won one main draw match this year before landing in Charleston, but she looked anything but short on confidence against Marion Bartoli in the third round, coming from a break down in the final set to secure a maiden Top 10 triumph, 64 16 64.

Back In The Swing Of Things
Most players returning to tennis after a significant layoff due to illness or injury take a few weeks, or even months, to hit top form. Venus Williams, though, is not most players. In her first two tournaments back, Venus has hit the ground running with back-to-back quarterfinals in Miami and Charleston, notching up wins over Petra Kvitova, Ana Ivanovic and Jelena Jankovic.

Under The Radar
Also running into a bit of form in recent weeks has been Aleksandra Wozniak. Once as high as No.21 in the world, Wozniak fell to No.200 last August after an injury-plagued 18 months. However, the Canadian has slowly been rising the ranks in 2012 and a confidence-boosting few weeks in Miami and Charleston see her now on the verge of breaking back into the Top 50.

Coaching Corner
With 26 wins apiece in the first three months of 2012, all would appear to be rosy in the worlds of Victoria Azarenka and Agnieszka Radwanska. Although judging by the changes both have made to their coaching setups this week, neither looks like they are content to rest on their laurels; Radwanska has parted company with interim coach Borna Vikic, while two-time Grand Slam winner Amélie Mauresmo has been enlisted by Azarenka as a coaching consultant.

Top Of The Pops
Caroline Wozniacki has made it to the top in tennis and now she is attempting to do the same in the world of music. But, don't worry, this isn't a permanent career change; Caro is just dipping her toe in the pop charts, releasing a charity single called Oxygen to raise money for the Danish and Polish Paralympic teams.

Quote Of The Week
What's the secret behind three-time major champion Maria Sharapova's success? Well, according to the woman herself it's a simple recipe of hard work and a love of the game.

"I mean, I love what I do. I love playing tennis, and I know that thing that ultimately wins me matches is the hard work I put on the court," Sharapova said. "When I have tough things in my life going on, when I go on court it's like my oasis. You know, you forget about everything when you're out there. I love that feeling."

Birdies Tweeting
Golf fever is rife on the WTA. Well, maybe not rife, but Caro and her fellow golf lover Laura Robson are certainly getting excited about this week's Masters in Augusta:

@laurarobson5 (Laura Robson)
@CaroWozniacki check out Rory getting the fistpump out on the 18th! Love it!!

@Caro Wozniacki (Caroline Wozniacki)
Nice round from @McIlroyRory today!

Caroline Wozniacki, Rory McIlroy