Despite the win, Rennes slipped to fifth place on 37 points, behind Monaco on goal difference, after the princely side beat AC Ajaccio 7-1 earlier on Sunday with a Wissam Ben Yedder hat-trick.
PSG captain Marquinhos said, “Two defeats in the new year, we need to be more aggressive and concrete. If we get it again it will be fine.”
“We have to find it quickly. That’s a lot of points we dropped. Behind us, Lens and Marseille will not slow down.”
Kylian Mbappe was on the bench alongside Lionel Messi and Neymar alongside Hugo Ekitike after returning to training early after the World Cup final, but it was injured midfielder Marco Verratti who PSG missed the most.
Midfielder Warren Zaire-Emery, 16, became the youngest player to start a Ligue 1 game for PSG and the Italian is nowhere near the level.
Rennes had their first clear chance in the 28th minute when Arnaud Kalimuendo forced Gianluigi Donnarumma to turn away his powerful shot from inside the box.
