Serving for the match at 5-1, Djokovic handed a towel to a man in the crowd who seemed unwell and who wiped his forehead with it.
"I served better than him at important moments".
Djokovic revealed he also was not feeling very well out on court. I checked with the doctor and he said that he recommended to not play, because if I continued the abdominal may break and could become a major thing.
Turkish President Recep Tayyip Erdogan said the investigation needs to be completed swiftly and that he wants an extradition request for 18 suspects detained in Saudi Arabia to be put on trial in Istanbul.
Djokovic lost his top ranking to Andy Murray at the Paris Masters two years ago.
The 31-year-old Serb has returned to his brutal best this season with Grand Slam wins at Wimbledon and the U.S Open, along with ATP Masters triumphs in Cincinnati and Shanghai.
The Croat ousted the Andre Agassi-led Grigor Dimitrov 7-6 (5), 6-4. On his last appearance in 2015 he was knocked out by American John Isner in the round of 16. But if he does play, the draw has done him few favours: first either Milos Raonic or Jo-Wilfried Tsonga, who may be returning from injury but is a former Paris champion, and beat Federer in their last two meetings. "I feel like I recovered well from last week". "Everybody knows that I'm very pleased to do my comeback here, but it is also hard to prove it on the court". The Spaniard has not said whether he will play in next week's ATP Tour Finals in London.
He started the second set by breaking Dimitrov and was largely in charge after that.
"I was a bit bumpy".
"Of course I'm aware of the situation".
"I am not thinking about big improvements or big things".
Federer's only tournament victory in Bercy came in 2011.
Serbian star Djokovic is due to face Marin Cilic in the quarter-finals in the French capital. "After that, I couldn't get any points on return, so I took some risks and played more aggressive, and I did it".
"It was welcome because my body needed it", Federer said. It's a great journey that I've had.
Raonic was scheduled to face Roger Federer in a second-round match on Wednesday.