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 number one. Djokovic won a record-extending 10th Australian Open title last month to draw level with his great rival Rafa Nadal on 22 Grand Slam victories and leapfrog Carlos Alcaraz into top spot in the ATP rankings. He already holds the record for the most weeks as the men's number one 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-times major champion Graf. ...Keep on reading: Sky’s the limit for Novak Djokovic, say younger rivals