Novak Djokovic has made history by breaking Roger Federer's record for most weeks spent as world No.1 on the ATP Tour.
Djokovic surpassed Federer on Monday with his 311th week as the top player in men's tennis.
The Serbian star reclaimed the top ranking from Rafael Nadal in February 2020 and finished as year-ending No.1 for the sixth time, tying with American great Pete Sampras.
Djokovic, who first topped the men's rankings in July 2011, went on to celebrate a record-extending ninth Australian Open title at Melbourne Park in February.
With Federer turning 40 in August, the 33-year-old Djokovic has time on his side in pursuit of more history.
Djokovic has won 18 grand slams, two adrift of Federer - who is set to make his long-awaited ATP comeback in Qatar this week - and Nadal.
Nadal remains at world No.2, but he is set to be leapfrogged by Australian Open runner-up Daniil Medvedev in the next rankings release on March 15.
Russian Medvedev will be the first player other than Djokovic, Nadal, Federer and Andy Murray to be ranked in the top two since July 2005, when Australia's Lleyton Hewitt held the spot.
Australian Associated Press