Roger Federer has withdrawn from this week's Paris Masters in order to "pace himself", with next month's ATP Finals in London.
The 38-year-old is playing in his 22nd season on the ATP Tour and won a record-extending 10th Swiss Indoors championship title.
Federer extended his winning run to 24 matches in the event and sealed his 103rd ATP title.
"I am extremely disappointed to have to pull out," Federer said.
"I want to play as long as possible on the Tour. I'm sorry for my French fans who I'll see at Roland Garros in 2020."
He has already secured a spot in the ATP Finals, which start on 10 November at the O2 Arena.
World number one Novak Djokovic, Rafael Nadal, Daniil Medvedev, Dominic Thiem and Stefanos Tsitsipas are the other five to have guaranteed a place, with the Paris Masters set to determine who clinches the final two spots.