Djokovic up and running with victory over Herbert in Paris

Defending champion Novak Djokovic shrugged off doubts about the state of his game with a confident 6-4 7-6(3) 6-4 defeat of Pierre-Hugues Herbert in the French Open first round.

The top seed had to wait until the night match on the third day of the tournament to begin his quest for an Open era record-extending 25th Grand Slam title but quickly hit his stride to dispatch French wildcard Herbert on Court Philippe Chatrier.

Djokovic, 37, has not reached a final this year and his world number one ranking is under threat from Jannik Sinner but everything looked in fine working order against Herbert who put up solid resistance but never looked likely to unduly concern the Serbian who has now won 72 of his 74 first-round matches in Grand Slam tournaments.

The only blip came in the second set when Djokovic broke serve early but then dropped his own and was dragged into a tiebreak before finding an extra gear to move towards victory.

"He gave me a lot of trouble on his serve, serve and volleying, but from my side I'm pleased with the performance," Djokovic told Eurosport.

"At this age I see every match as a golden opportunity as you don't know how long you have at this level."

Defeats in Rome and Geneva to Alejandro Tabilo and Tomas Machac respectively led Djokovic to say he had high hopes but low expectations for the French Open.

But while he may have played down his chances, Grand Slam tournaments are a different proposition.

"It's something that I have been saying from the beginning of the year, that Grand Slams are the ones that are basically getting me up from the bed every day, knowing that I have to hit the practice courts," he said.