Djokovic needs to win just two matches at this week’s Vienna Open to end the year as world No. 1 for the sixth time, equaling Pete Sampras’ record set between 1993 and 1998.
“That’s one of the toughest achievements in world sports.”
Djokovic, the top-seeded player in the tournament, faces Filip Krajinovic in the first round on Tuesday as he bids to win his fifth ATP Tour title this year.
He surpassed Sampras’ record in the leaderboard of total weeks at No. 1 this September and has now spent 292 weeks at the top of the rankings. Only Roger Federer has more at 310.
Daniil Medvedev and Andrey Rublev complete the top five seeded players in the tournament.