Neymar notched his 10th goal of the season but a lethargic Paris Saint-Germain needed a second-half Gianluigi Donnarumma penalty save to secure a 1-0 win over Brest in Ligue 1 on Saturday.
The result took PSG back to the top of the table and maintains their unbeaten start to the campaign under new coach Christophe Galtier.
PSG are top on goal difference from Marseille, who also remain unbeaten in the league after beating Lille 2-1 in Saturday's other game.
Lens had briefly seized first place after beating Troyes 1-0 on Friday, but are now two points behind the leaders in third position.
Despite their victory, PSG put in their least convincing performance of the season so far against a Brest side who just two weeks ago lost 7-0 at home to Montpellier.
Galtier may reflect that he should have made more changes to his starting line-up, with Saturday's match falling in between their 2-1 midweek Champions League win over Juventus and a trip to Israel to play Maccabi Haifa this Wednesday.
"It is always difficult to play on the back of a Champions League game. So much energy goes into these matches, physically as well as mentally," Galtier told broadcaster Amazon Prime.
"I wouldn't say we were trying to play within ourselves but there was maybe not the same desire to make the effort that we have seen so far this season."
Nuno Mendes and captain Marquinhos were the only PSG players who started against Juventus to be rested, with Juan Bernat and Danilo Pereira coming in.
Galtier resisted the temptation to rest any of his superstar front three, saying beforehand that he had thought about leaving out Lionel Messi but realised the Argentine "doesn't need a breather".
"I wanted to start our strongest attack to put the game to bed early and make substitutions sooner," he reasoned.
Summer signings Nordi Mukiele and Carlos Soler spent the afternoon on the bench, while Spanish international Fabian Ruiz came on for his debut as a second-half substitute.
Rangers-Napoli on wed
The Champions League game between Scottish club Rangers and Napoli has been rescheduled from Tuesday to Wednesday because of the limited police resources available following the death of Queen Elizabeth II, with away fans urged to stay away from the match.
UEFA said Sunday that the game has been pushed back by 24 hours because of a “severe limitations on police resources and organizational issues related to the ongoing events surrounding the national mourning” for the queen.