Well, it's not such a secret anymore - Caroline Wozniacki is kicking off what she hopes will be her best clay court season ever thanks to a certain Barcelona Bumblebee.
WTA Staff

STUTTGART, Germany - Caroline Wozniacki has had some strong results on clay - three WTA titles on the surface, including the Premier-level stop in Brussels in 2011, and the quarterfinals of the big one, the French Open, in 2010. But for a player with 20 more titles on the other surfaces, two US Open finals and 67 weeks as the World No.1, she wants more on clay - so she hired a clay court queen.

Wozniacki began working with three-time French Open champion and fellow former No.1 Arantxa Sánchez-Vicario during Miami, and they will continue to work together through the clay court season.

"Sánchez-Vicario will be with us for the tournaments in Rome and Madrid, and in between she will also train with us in Monte Carlo," Wozniacki's father and coach, Piotr, told Danish TV recently. "We will keep working together until the French Open, the tournament that completes the season on clay.

"We will then decide, based on what happens, whether to keep going or not."

Wozniacki elaborated on the new relationship in her pre-tournament presser in Stuttgart.

"I was with her for a few weeks when I was in Miami," she said. "The last few clay court seasons haven't been the best for me, so I just thought it would be perfect when she was there that I could consult with her and get some tactical advice as well. It was really great and it worked out well.

"We've been working on more about the mentality going into the game and going onto the surface. You have to hit more balls into the court, you have to run more balls down and change up the pace, and that's really it. My game really should fit with clay, but I haven't had the results I've wanted.

"I'm trying to do my best to change that."

What are their specific goals in terms of results?

"I hope that I can just play well and get some good matches in the next tournaments," Wozniacki said. "Obviously the French Open is just right around the corner, so that's probably the biggest goal for me, but until then we have some tough competition here in Stuttgart - hopefully I can do well here.

"It's always a tough draw here. The best players are playing. It's going to be fun."

The French Open was Sánchez-Vicario's very best Grand Slam - she won three titles there, in 1989 (beating Steffi Graf in the final), 1994 (beating Mary Pierce in the final) and 1998 (beating Monica Seles in the final). Her only other Grand Slam came at the 1994 US Open (beating Graf in the final).

She was the only Spaniard ever to reach No.1, too, spending 12 weeks there in 1995.