Kim Clijsters confirms on her website that she has split with coach Wim Fissette and will work with former coach Carl Maes. "Wim does not feel entirely in place in his current role in Kim's coaching team and wants to go his own way," a statement read.

Before Clijsters retired to start a family, Fisette has only been her hitting partner. When she returned to the tour in 2009, he was named her coach.

"Kim and I have had a whale of a time, with three Grand Slam victories as highlights, but also the number one spot in the WTA rankings was a fantastic feat," Fisette said. "The arrival of Carl has given the team a new impetus, but for myself adapting to the new situation is harder than expected. Kim offered me take part in her brand new tennis academy, but I would still like to coach a top player first."

Clijsters added: "It's a real pity that Wim leaves. I would like to thank him for the wonderful years we have worked together and wish him all the best."