Novak Djokovic has shown that age is not a barrier and the 35-year-old will continue to break records, his younger rivals on the ATP tour said as the Serbian star looks to overtake Steffi Graf as the player with the most weeks at world No.1.

Djokovic won a record-extending 10th Australian Open title last month to draw level with Rafael Nadal on 22 grand slam victories and leapfrog Carlos Alcaraz to the top spot in the ATP rankings.

He already holds the record for the most weeks as the men’s No.1 after surpassing Roger Federer’s mark of 310 weeks in March 2021 and began his 377th week at the top on Monday to go level with 22-time major champion Graf.

Russian world No. 5 Andrey Rublev said Djokovic had shown that anything is possible.

“And at the age of 35, he still can be the best player in the world and break records,” Rublev, 25, who lost to Djokovic in the Australian Open quarter finals, told reporters in Doha.

“If you do the things right, you can perform at the highest level ... age doesn’t matter. That’s what it means to me.”

Former world No. 2 Alexander Zverev said Djokovic had shown how consistent he can be by dominating his rivals in the last decade.

However, Zverev said that watching Graf being overtaken would be bittersweet for him.

“He’s surpassing Steffi, so as a German, obviously I always loved her having that record. But credit to Novak, I think that shows how great he is,” the 25-year-old Zverev said.