Coach Goran Ivanisevic believes Novak Djokovic has “a lot more” grand slam titles in him.

The Serbian broke the record he has been pursuing relentlessly with his 23rd major trophy at the French Open on Sunday, making him the most successful male player ever.

He can equal Margaret Court’s all-time record at Wimbledon, where he will be the hot favourite, and could break it at the US Open, where a first calendar Grand Slam by a man since Rod Laver in 1969 would also be on the line.

That he has reached 23 despite the problems caused by his refusal to be vaccinated against Covid-19, leading to him being deported from Australia last year and missing the US Open, is all the more remarkable.

“It’s incredible,” said former Wimbledon champion Ivanisevic, Djokovic’s coach since 2019.

“If I go back last year in Australia where all this s**t started and then we didn’t know what to do. And now he’s with 23 grand slams and it’s no end.

“I’m really sorry that Rafa (Nadal) is not here, but I say a long time ago before even I became member of his team that him and Rafa, they’re going to go over 22.

“I am hoping Rafa is coming back winning one more and Novak is the only player who can win the calendar Grand Slam. He was one match away two years ago, so he has a chance this year.

“It’s still a long way. But grand slams are the goal. I don’t know how many, but I think he has in his body a lot more.”

Djokovic’s two children, Stefan and Tara, watched him lift the Coupe des Mousquetaires for a third time but Djokovic shows no sign of tiring of life on the road or the demands of top-level tennis.

“Sometimes I see it and then he comes on the court and then you’ll see how much he enjoys to practise, how much he enjoys to hit winners, how much he enjoys to work on little details,” said Ivanisevic.

“Winning in front of this unbelievable crowd, unbelievable stadium. He’s keeping his body great, he’s in great shape. Thank God not too many injuries.

“So it’s fascinating to see because sometimes you think, ‘OK, now you have 23’. But he’s going to find, again, some kind of motivation to win 24, maybe 25, who knows where is the end.”

While Djokovic defeated Ruud in the final, his biggest hurdle was getting past Carlos Alcaraz – who he has surpassed again as world number one – in the semi-finals.

After two pulsating sets, 20-year-old Alcaraz was stricken by cramp, ending his hopes of landing a rare meaningful blow for the next generation against Djokovic.

It is very unlikely to be their last grand slam battle and Ivanisevic said: “I love Carlos. First of all, he’s a great kid. And he’s such a well-educated (guy), nice, always laughing, great tennis player, already won a grand slam.

“He’s going to be extremely dangerous. There are few more guys, always (Daniil) Medvedev but Carlos, I love that guy. He’s a fresh air for tennis, how he plays, how he smiles, how he’s happy, how he plays tennis on the court, the ideas, is just amazing.

“For sure he’s going to be a threat. He’s going to be a threat on grass, he’s going to be a threat on hard court, he’s going to be a threat everywhere. But, it’s always this ‘but’. He’s still young. You have Novak and you can’t ever bet against Novak.”

Fourth seed Ruud has now made three slam finals in a year having lost to Nadal at Roland Garros 12 months ago and Alcaraz in New York.

He has won only one match at Wimbledon in three attempts and last year earned headlines for saying grass was for golf.

“It was more of a joke that got taken too seriously,” he said. “I think it’s fun to play. It doesn’t suit my game very well. I feel a little uncomfortable on it.

“But it’s always so fun to come to Wimbledon. It’s maybe the most historic event that we have. So I really look forward to being back there, and this year we’re playing for points again. I’m going to try to be ready and give it my best effort.

“I have become friends. I enjoy being on the golf course and I enjoy being at Wimbledon.”