• Kazakh backs former coach, says she ‘never complained’
• Current coach Ivanisevic uncertain of future with her

Elena Rybakina has backed her former coach Stefano Vukov and expressed her disagreement with the Women’s Tennis Association as the governing body continued its investigation into the Croat on the eve of the Australian Open.

“I don’t agree with a lot of things what WTA do in the sense of my relationship with Stefano,” said Rybakina, the sixth seed in Melbourne. “As I said before, I have never made any complaints or any of these things. I always said that he never mistreated me. That’s one thing. Since this situation is how it is now, I don’t really want to speak about this more. I want to focus on my matches here.”