Ana Ivanovic has broken with his coach

- Only four months he has worked with Craig Kardon
- The latest disappointment was in the Roland Garros
- For the season of grass will have a team of part-sponsor

The serbia Ana Ivanovic, former world number one, has broken with his coach Craig Kardon after only four months of work in common not being able to reach the ideal state of form.

Ivanovic, who could not defend successful in his Roland Garros title, Kardon thanked "for their hard work," adding in a statement that "it is a great kid and I have a lot of fun working with him."

Kardon had coached Martina Navratilova, Lindsay Davenport, Jennifer Capriati and Mary Pierce and began working with Ivanovic last February, but without achieving the desired results.

In fact, only twelve months after becoming the world number one, with his victory at Roland Garros, has left the top-ten in the fall round of the tournament on Monday and since French is the thirteenth in the ranking female.

For the grass season, will have a part of its sponsor (Adidas), which will be the coach Sven Groeneveld, who has worked with the last campaign.