Following a shock 2-0 home defeat to Reims, PSG are tied for top spot with on-fire Angers, 2-0 winners in Toulouse, while LOSC hit third following their triumph over Strasbourg and Monaco enjoy a first win of the campaign.
With Saturday's clash in Bordeaux in mind, PSG boss Thomas Tuchel opted to rotate his squad for the visit of Reims but was left red-faced as the Champagne club proved true to its origins with a bubbly performance that handed the champions and title favourites their first home defeat in 22 matches under Tuchel's guidance.
Reims turn the tables
In the absence of Edinson Cavani, Kylian Mbappé and Mauro Icardi - all injured - Neymar and, after Eric Maxim Choupo-Moting was subbed off injured, Angel Di Maria were left to try to break down a superbly organised Reims side. But the visitors' tenacious defending and opportunistic striking - through Hassane Kamara (29') and Boulaye Dia (90'+4) - brought the capital club undone.
"A lot of things didn't work tonight. We deserved to lose. We lacked the speed and the mentality to win tonight," said Tuchel, who had opted to rest Thiago Silva, Marquinhos, Marco Verratti and Idrissa Gueye among others - in his starting line-up. "Reims played a lot closer to their best than we did this evening. We had a lot of players missing, that's why we made so many changes. I have to manage the playing time of the squad. But I think it was possible to play better with the team we had on the pitch."
Meanwhile Reims boss David Guion is hoping his side can build on this amazing achievement.
"Playing well against the big sides is one of our characteristics, it's in our DNA," said the Champagne boss, whose side have also beaten Marseille and Lille this season. "I have one of the youngest squads in Ligue 1. It's through performances like this that they will come to realise how much potential they have. Building success requires a solid foundation. The squad is disciplined and organised, which allows us to play well on the road."
Angers on fire
The slip-up from the champions - their second of the season so far - paved the way for on-fire Angers to join them on 15 points, with only goal difference separating them. Whereas Week 6 saw Casimir Ninga hit a hat-trick to maintain Angers' charge, this week it was summer signing Rachid Alioui who stepped up, bagging a last-gasp brace that included a superb free-kick.
"First of all, I'm satisfied with the match we produced. And of course the result that goes with it. Even if it was a long time coming, it is a victory that cannot be disputed," said Angers boss Stéphane Moulin, whose side have won five of seven league outings this season. "I am very proud of what the team has shown. We were smart. I liked the way we did it: we attacked without getting too out of balance."
Osimhen strikes again
Meanwhile LOSC got back to winning ways - and into the top three for the first time this season - with a 2-0 win over tough-defending Strasbourg that came courtesy of Ligue 1 Conforama top scorer Victor Osimhen (43') and veteran striker Loïc Rémy (65')."I am very satisfied because this will trigger a real positive dynamic in the squad, and everyone will feel that they have a place and a role to play," said LOSC boss Christophe Galtier, who had rested the liked of Jonathan Bamba and Benjamin André for the clash. "I didn't rotate the squad as if this were a round of 64 clash in the Coupe de France - the league is our main focus. We have to collect points and fight with everything we have to stay in the upper reaches of the table for as long as possible."
Golovin hands Monaco maiden win
Les Dogues will be out to confirm their form away to OGC Nice at the weekend, but Patrick Vieira's men will be desperate to bounce back after allowing Monaco their first win of the season - 3-1 - in the principality on Tuesday night. Russian prodigy Aleksandr Golovin was on fire for the home side, scoring two superb goals and setting up Wissam Ben Yedder for the third.
The win for Leonardo Jardim's heretofore struggling side drags them out of the drop zone to 18th, one point clear of Saint-Etienne, whose free-fall continued with a 1-0 defeat at home to FC Metz, who had top scorer Habib Diallo's fifth of the season to thanks for the three-point haul that takes them 16th.
OL troubles continue
Meanwhile things didn't go much better for Sainté's arch-rivals Olympique Lyonnais, whose winless run stretched to six matches (two defeats) as they were held 2-2 in Brest, with former OL youth academy product Yoann Court having a dream night with two goals to cancel out efforts from Moussa Dembélé and Maxwel Cornet. OL dip to 11th as the pressure mounts on new coach Sylvinho.
Nantes had captain Abdoulaye Touré's spot-kick to thank for the 1-0 Breton derby win over Rennes that saw them climb to fourth, while Paulo Sousa's Bordeaux turned on the style for a 3-1 win in Amiens that took them fifth, locked on points with a Marseille side that was held to a 0-0 in Dijon.
Souquet decides derby
Montpellier broke into the top half of the table for the first time this season thanks to a 1-0 win over bitted local rivals Nîmes Olympique that came courtesy of a second stunning strike of the season from right-back Arnaud Souquet.