Randal Kolo Muani brought Nantes level before setting up the winner 12 minutes laterParis St-Germain missed the chance to go top of Ligue 1 after a shock home defeat by strugglers Nantes.
Julian Draxler’s low drive gave PSG the lead shortly before half-time.
Randal Kolo Muani capitalised on a mistake by Kylian Mbappe to bring Nantes level after the break, before setting up Moses Simon to slide home the winner.
The defeat means PSG stay second, with Lille three points clear at the top after a goalless draw at Monaco.
Mauricio Pochettino’s side, who knocked Barcelona out of the Champions League in midweek, have lost seven league games already this season and this latest loss means they have suffered back-to-back Ligue 1 defeats at the Parc des Princes for the first time since 2012.
They looked set for a comfortable evening when Draxler’s effort from just inside the area had too much power for Alban Lafont.
But visitors Nantes, who went into the game second from bottom in Ligue 1, were much improved after the break and were rewarded with a memorable victory.
They equalised when a sloppy cross-field pass from Mbappe went straight to the lively Kolo Muani, who fired the ball high past Keylor Navas from inside the area.
There was a strange moment soon after when Angel di Maria was substituted and disappeared quickly down the tunnel. PSG later told the AFP news agency that Di Maria was one of two players whose houses had been burgled during the game.
When play resumed, Kolo Muani turned provider when he raced onto a long pass before teeing the ball up for Simon to score from close range.
PSG’s best chance to equalise fell to Leandro Paredes, but his shot was brilliantly saved by Lafont.
The win moves Nantes above Nimes and to within a point of 17th-placed Lorient.
Line-upsPSGFormation 4-2-3-1
1Navas
31Dagba5Marquinhos3Kimpembe22Diallo
15Danilo6Verratti
11Di María12Rafinha23Draxler
7Mbappé
1Navas31DagbaSubstituted forKehrerat 74’minutes5Marquinhos3Kimpembe22Diallo15Danilo6VerrattiBooked at 67mins11Di MaríaSubstituted forParedesat 62’minutes12RafinhaBooked at 48minsSubstituted forIcardiat 56’minutes23DraxlerSubstituted forSarabiaat 74’minutes7MbappéSubstitutes4Kehrer8Paredes9Icardi16Rico19Sarabia20Kurzawa25Bakker27Gueye32PembeleNantesFormation 3-4-3
1Lafont
21Castelletto3Girotto4Pallois
11Coco5Chirivella19Touré14Traoré
10Blas23Kolo Muani27Simon
1Lafont21Castelletto3Girotto4Pallois11Coco5Chirivella19Touré14TraoréBooked at 50mins10BlasSubstituted forLouzaat 84’minutes23Kolo MuaniSubstituted forEmondat 84’minutes27SimonBooked at 45minsSubstituted forBambaat 83’minutesSubstitutes7Coulibaly17Limbombe26Louza28Emond29Mendy30Petric32Bamba33Sylla34MerlinLive TextMatch ends, Paris Saint Germain 1, Nantes 2.
Second Half ends, Paris Saint Germain 1, Nantes 2.
Pablo Sarabia (Paris Saint Germain) wins a free kick on the right wing.
Foul by Abdoul Kader Bamba (Nantes).
Attempt saved. Abdoulaye Touré (Nantes) right footed shot from outside the box is saved in the bottom left corner. Assisted by Abdoul Kader Bamba.
Foul by Pablo Sarabia (Paris Saint Germain).
Nicolas Pallois (Nantes) wins a free kick in the defensive half.
Foul by Thilo Kehrer (Paris Saint Germain).
Charles Traoré (Nantes) wins a free kick in the defensive half.
Substitution, Nantes. Imran Louza replaces Ludovic Blas.
Substitution, Nantes. Renaud Emond replaces Randal Kolo Muani.
Substitution, Nantes. Abdoul Kader Bamba replaces Moses Simon.
Corner, Paris Saint Germain. Conceded by Ludovic Blas.
Attempt saved. Leandro Paredes (Paris Saint Germain) right footed shot from outside the box is saved in the centre of the goal. Assisted by Marco Verratti.
Hand ball by Presnel Kimpembe (Paris Saint Germain).
Corner, Paris Saint Germain. Conceded by Andrei Girotto.
Attempt saved. Randal Kolo Muani (Nantes) right footed shot from the centre of the box is saved in the top centre of the goal. Assisted by Marcus Coco with a cross.
Foul by Thilo Kehrer (Paris Saint Germain).
Moses Simon (Nantes) wins a free kick on the left wing.
Hand ball by Ludovic Blas (Nantes).
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