But it's not for the reason you might think.
Djokovic and Nadal had expressed doubt as to whether they would play the December 22 match as Saudi Arabia is under growing pressure from the worldwide community following the killing of Saudi writer Jamal Khashoggi after he entered Saudi Arabia's consulate in Istanbul on October 2. Both players had been criticized for not calling off the match in the wake of the premeditated killing of Jamal Khashoggi, a Saudi Arabian journalist and government critic who was murdered at the Saudi Arabian consulate in Istanbul last month.
Nadal and Djokovic had reportedly signed up to the Saudi exhibition match around a year ago, although the event came under increasing scrutiny in light of Khashoggi's death.More news: Traces of acid, chemicals found in Saudi consul’s home
Djokovic and Nadal have played 52 times in their careers, with the Serb leading their head-to-head 27-25.
Both players tweeted their excitement shortly after the match was announced on October 7, less than a week after Khashoggi was killed.
'Right now we just don't have obviously enough information, and we have to look into that a bit more and then we'll make our decision soon'.More news: Pat Howard pushed out early as Cricket Australia purge continues
"I had a commitment since one year to play there", Nadal told reporters before the Paris Masters, according to Tennis.com. Roger Federer had turned down the invitation, saying he "didn't want to play there at that time". "I know something happened very bad inside [the consulate] there". And my team is talking to them, to analyse the things.
Asked if now the exhibition was not happening, Djokovic, speaking ahead of the start of the ATP Finals on Sunday, said: "Yes, it's not happening".
'Nadal, also in Paris, added: 'Of course I'm aware of all the situation.More news: Novak Djokovic hails 'perfect 5 months' as he targets ATP Finals glory
Nadal confirmed his season had ended early after he underwent ankle surgery that rules him out of the end of season World Tour Finals in London next week.