With Lens, who are four points behind PSG in the standings, the Ligue 1 leaders suffered their first setback of the year.
Within the first five minutes, Przemyslaw Frankowski gave Lens the lead before Hugo Ekitike drew even three minutes later.
Just before the halfway point, Lois Openda’s quick counter and finish gave Lens the lead again.
Sergio Ramos attempted to regain control while high up the field, but Openda threw him to the ground before shooting past Gianluigi Donnarumma.
Mbappe and Achraf Hakimi, who helped Morocco finish fourth at the World Cup, will be enjoying a rest over the coming days, PSG manager Christophe Galtier announced in his post-game interview. He clarified: “For a few days, Hakimi and Mbappe will be off. They were supposed to be able to play these two games. Now they will heal.”
The two are anticipated to return for PSG’s match against Rennes on January 15.
PSG will play Chateauroux in the French Cup and Angers in Ligue 1 in the meantime.
After helping Argentina win the World Cup, Lionel Messi has not yet left his own country, according to Galtier.
Added the 56-year-old: “There are specific instances involving guys who advanced quite far. For Morocco, Achraf Hakimi participated in each match at the World Cup. He was a member of the World Cup squad. He wanted to return as soon as he could, much like Kylian Mbappe.
“He also put on some outstanding displays, leading the World Cup in goals scored. After meeting with him and all of my teams, who maintained frequent communication with the players, Kylian Mbappe expressed an immediate desire to rejoin us.
Given that they won the championship, Lionel Messi returned to Argentina for the festivities. He had a fantastic tournament.