Naomi Osaka's coach, Patrick Mouratoglou, expressed his feelings on Novak Djokovic's current form and why the Serb struggled against Jannik Sinner in the semifinals of the French Open. Mouratoglou believes that Djokovic's loss was not due to his physical incapability, but rather due to a drop in his mental edge.Sinner defeated Djokovic in straight sets, after the Serb had put up commanding performances in the earlier rounds of the tournament.In a video posted on Instagram, Mouratoglou, an acclaimed tennis coach, stated that Djokovic was found wanting in the mental department at Roland Garros. He said:"It's not about the tennis, it's more about the mental side of it. I felt he did accept a little bit too much the dominance of Sinner on him, which is not Novak. I didn't see Novak I know, and I still think his motivation is not high enough. It's there, but I don't know where it is exactly."Mouratoglou also talked about what might have brought about this change in the tennis star. The Frenchman believes it stems from his former rivalries with Rafael Nadal and Roger Federer."Everybody was fan of Roger, everybody was fan of Rafa, everybody was saying they were the best players in the world, and he wanted to prove that he was the best. And I think that was something that really drove him. He lost his drive for the reason that he's the greatest," he added. View this post on Instagram Instagram PostNovak Djokovic himself admitted that this could be his last French Open.Novak Djokovic on this year possibly being his last time at French OpenNovak Djokovic at Roland Garros 2025 - Image Source: GettyAs Novak Djokovic was seen kissing the clay court and bidding an emotional adieu to the Court Philippe Chatrier after his loss to Jannik Sinner, fans speculated about his future. He addressed the topic during his post-match press conference and said:"Do I wish to play more, yes I do. But will I be able to play here in 12 months' time, I don't know. I said it could have been my last match [here], I didn't say it was," he said.Even though the tennis star hasn't yet confirmed his participation at Wimbledon, he will hopefully be in action in the quest for his 25th Major title.