Jannik Sinner has withdrawn from the Paris Masters due to a virus, the world number one said on Tuesday.
The 23-year-old, who defeated Carlos Alcaraz in the final of the Six Kings Slam exhibition event to bag the $6 million title in Saudi Arabia on October 20, has been replaced in the draw by Frenchman Arthur Cazaux.
"I'm very disappointed to tell you that I am not able to play here at this tournament. I came here very early to prepare and then I felt sick," Sinner said in a video message shared by the organizers.
"I have a virus at the moment, which will pass in the next two or three days. Body-wise, I am not ready to compete.
"I am very sorry for that. I will see you guys (in Paris) next year. Hopefully, it will be a great year. And this year – without me. Hopefully, I'll see you next year."
Last week, the 24-time Grand Slam champion Novak Djokovic also withdrew from the Paris Masters, the final 1000-event of the year.
The Paris indoor tournament runs from October 28 to November 3.

Jordan qualifies for the FIFA Arab Cup final
Sharjah Warriorz make it two in two with 11-run win over Gulf Giants
Bournemouth rescue draw with Man United in eight-goal thriller
Morocco beat UAE to reach FIFA Arab Cup final
Mid East Falcons win inaugural United Series Championship in Dubai