Naomi Osaka’s coach Patrick Mouratoglou has accused Novak Djokovic of lacking motivation during his Madrid Open campaign.
The veteran Serb was beaten in straight sets by Matteo Arnaldi in the opening round.
“I was very surprised to see Novak play like that in Monte Carlo and then again in Madrid,” said Mouratoglou.
“For a guy like him, if he doesn’t feel like playing, if he doesn’t have the motivation, I don’t think he should play because he didn’t even look like he was trying to win.
“I am not saying he is not able to play better, he is for sure able to play much better, but I felt like he was not prepared physically.
“I mean, tennis-wise, physically, for those tournaments because he doesn’t have the motivation, and no judgment there.
“But the question is, why did he play then? I don’t understand.
“Motivation is a big thing for him, it’s all about it, and I’ve been saying that now for quite a long time.”