'Serena Williams can still win any Major if she is at her best,' said Mouratoglou

The 23-time Major champion Serena Williams will turn 40 in September, but she still plays on a high level and remains in the top-10 over two decades after cracking that group.

After returning in spring 2018 following a birth of a child, Serena advanced to four Major finals at Wimbledon and the US Open in 2018 and 2019, losing them all and failing to lift that elusive 24th Major title. In February, the American had another chance playing on a high level and beating five rivals to reach the semis. There, she lost to Naomi Osaka in straight sets despite a solid start, spraying too many mistakes and leaving the court empty-handed.

Serena's coach Patrick Mouratoglou said that her pupil was devastated after that defeat, feeling she had the game to chase the crown. Also, Patrick is confident about the future, stating that Serena can still win any Major title when she is at her 100% physically.

"I think Serena can play very well on clay; she has to be very fit because the serve is not as efficient on clay, and you have to work much more to win the point; every rally is a fight. But I feel if she's ready and at 100% physically, then she can be very dangerous on clay as well. The level is high, but I still believe that Serena can win any Major when she is at her best physically.

Serena was extremely disappointed after the Australian Open loss because she felt ready to win it; her level was high in Melbourne. Serena felt it might be her chance, and she left Australia mighty disappointed about her performance against Osaka. Naomi played on a high level, and Serena couldn't match that level. It's always difficult to take positive notes when you have a big disappointment, but I told her that her fitness was great and that we have to keep working like that.

There is a hurdle that we need to pass, but she's been close so many times. You have to be as fit as possible, so that's the plan. Of course, there's always a mental fight against pressure and yourself, which is part of what tennis is about," Patrick Mouratoglou said.