Defending champion Novak Djokovic has pulled out of the ATP Finals because of an "ongoing injury".The 37-year-old Serb, who has won a record seven titles at the event, had already qualified as the sixth most successful player on the ATP Tour this season."I was really looking forward to being there, but due to ongoing injury I won't be playing next week," Djokovic wrote on social media."Apologies to those who were planning to see me.

Wishing all the players a great tournament.

See you soon."Djokovic, who has won a record 24 Grand Slam men's singles titles, will not play again this season.

He has not specified the nature of his injury.He won 37 of his 46 matches in 2024 and claimed his sole title at the Olympic Games in Paris - landing the gold medal that had previously eluded him.It is the first season since 2005 in which he has not won an ATP event and only the fourth since 2008 where he has not won one of the four Grand Slam titles.