Andy Murray sets difficult Carlos Alcaraz challenge after Novak Djokovic's US Open triumph

Remarkably, Djokovic hadn't even been the favourite to win the US Open prior to the tournament commencing.

Instead, many tennis fans were backing Alcaraz to reign supreme given he was the defending champion and had won Wimbledon by beating Djokovic back in July.

Murray believes the young Spaniard has a bright future ahead.

However, the Brit has also lavished praise on Djokovic and believes Alcaraz must give his all in order to achieve similar success to the Serb.

"It's up to the young guys to be pushing Novak and looking to overtake him. It doesn't look like that's close to happening," Murray told BBC Sport.

"Novak's been an incredible player for a very long time, like Roger and Rafa, it's the longevity and how long they've all been able to do that for.

"Novak's longevity has been the greatest. He's played at this level for such a long time now."

He added: "I said that after Wimbledon, everyone was saying it was a changing of the guard, but it wasn't for me.

"It was quite clear Novak had won two of the first three slams and was very, very close in the final of Wimbledon.

"He proved that he's the best player in the world again yesterday and like I said it's up to the youngsters to improve enough to take him.

"I don't think he's going to stop at 24 titles, but you never know how long it will last.

"Physically, motivation, whether someone like Alcaraz improves - he's an amazing player Alcaraz, he's brilliant, but to do what Novak is doing on a consistent basis is different.

"It's not the same as doing it for 15-20 weeks a year like Novak is doing, every time he steps on the court.

"I do think that Alcaraz will soon get to that level but I don't think this is going to be the last time that Novak wins a Grand Slam."

Djokovic's journey to the very top of the sport started when he won the Australian Open in 2008.

Since then he's proceeded to establish himself as one of the best tennis players to ever grace the sport.

Djokovic has also won three majors in a calendar year for the third time.

He bulldozed his way to Australian Open glory at the start of the year, easily overcoming Stefanos Tsitsipas in the final in January.

Djokovic then secured his third French Open trophy after beating Casper Ruud six months later.

Had it not been for Alcaraz, he'd have added another Wimbledon trophy to his stunning collection.

And Djokovic has now drawn level with Margaret Court on 24 Grand Slam crowns after swatting Medvedev aside in New York.

Speaking after his victory, the 36-year-old admitted he was still pained by his Wimbledon final defeat.

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"I would definitely sign right away the paper if somebody would tell me I would win three out of four and play Wimbledon finals this year," he said.

"There is a little regret that I didn't win that Wimbledon final.

"But, at the end of the day, I have so much more to be happier and content with than actually to regret something."

Djokovic has now moved two majors in front of Rafael Nadal, who has won 22.

Roger Federer sits in third, with the Swiss maestro securing 20 Grand Slam titles prior to retiring last year.