The goals keep coming for Neymar at Paris Saint-Germain, and Gianluigi Donnarumma keeps stopping them at the other end.
The Brazil forward netted his eighth goal in seven Ligue 1 games and Donnarumma parried away a penalty to lead PSG back to the top with a 1-0 win over Brest on Saturday.
Still unbeaten in all competitions ahead of Wednesday's trip to Maccabi Haifa in the Champions League, PSG had briefly dropped to second place following Len's 1-0 win against Troyes on Friday.
Christophe Galtier's team moved back in charge with their sixth league win, level on points with second-place Marseille but having a better goal difference. Lens are third, two points behind the leading duo.
Marseille rallied to beat Lille 2-1 at the Stade Velodrome, bouncing back from their loss against Tottenham in the Champions League midweek. Defender Samuel Gigot volleyed home the winner in the 60th minute after Alexis Sanchez levelled for Marseille following Ismaily's opener.
Neymar's goal took him top outright in the scoring charts ahead of teammate Kylian Mbappe. With the World Cup looming later this year, the former Barcelona player has been in excellent form, with an additional six assists.
Neymar put the hosts in front in the 29th minute from Lionel Messi's assist. The Argentine picked out his teammate perfectly with a lofted ball into the box that Neymar controlled with a soft touch before firing it home with a left-footed shot into the bottom right corner.
Mbappe had a goal disallowed before halftime for offside, and Messi came close to doubling PSG's lead after the interval only to see his header from Mbappe's cross hit the post.
PSG could have been made to pay for their profligacy after Brest were awarded a soft penalty with 20 minutes left when Kimpembe was sanctioned for contact with Noah Fadiga. But Donnarumma got a firm hand to Islam Slimani's effort from the spot.
Donnarumma was decisive again nine minutes later to stop another effort from Slimani, ensuring that the hosts stayed in command.
"It's important to be able to suffer together," Donnarumma said.
"And today, we did it. We knew it would not be easy, and we had to suffer all together."