Rennes' only win this year came on 17 January and the team is now winless in its last six league games
European football matchday: Chelsea face second-tier Barnsley in FA Cup; Athletic Bilbao host Levante in Copa del Rey
Rennes travel to face first-division rival Angers and Saint-Etienne go to second-tier Sochaux in the French Cup’s remaining round of 64 games.
The fans, who were demonstrating against the club leadership and the team's poor recent run of results, assembled in the afternoon in front of Marseille's La Commanderie training ground, throwing smoke bombs and firecrackers.
PSG are second at the season's halfway stage, a point behind the leaders Lyon and ahead on goal difference of third-placed Lille, who triumphed 1-0 at Nimes.
Ligue 1: Kylian Mbappe's 100th PSG goal helps club beat Montpellier; Rennes lose again as poor form continues
With the win, PSG moved four points ahead of second-place Marseille, and five ahead of third-place Lille.
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UEFA is preparing to restart talks on how to reform its club competitions from 2024 amid revived talk of a breakaway super league.
Cesc Fabregas scored a late winner from the penalty spot as Monaco came from two goals down to stun reigning champions Paris Saint-Germain 3-2 in Ligue 1.
Di Maria struck in each half, with Moise Kean scoring the other, to move PSG up to 24 points, five ahead of second-placed Lille who take on Brest in Sunday's early fixture.
UEFA chief Ceferin's intervention came after a spate of penalties being awarded because balls have — even unwittingly — hit outstretched or raised arms.
All the goals came in the second half at the Stade de la Beaujoire, with Ander Herrera opening the scoring two minutes after the restart and Mbappe converting a 65th-minute spot-kick before Pablo Sarabia secured the points late on.
Rennes could have moved to the top of Ligue 1 with a victory, instead, they suffered their first defeat of the season as, for the fourth time in four games, they blew a lead. This time they did not even gain a draw.
Alessandro Florenzi scored PSG's second on 77 minutes and Pablo Sarabia notched a fourth for the reigning champions as PSG climbed above Rennes on goal difference after a fifth successive win.
Andre Villas-Boas' Marseille have not won in the four matches since they beat Paris Saint-Germain last month while Lyon's winless run already stretches to five matches in the six-game-old season.
Mendy will compete for a starting spot with Kepa Arrizabalaga, who has struggled for form and confidence at Stamford Bridge.
Ligue 1: Eduardo Camavinga's goal propels Rennes to win over Montpellier as both teams see red; Nice beat Strasbourg
Rennes teenager Eduardo Camavinga celebrated his first France call-up with a terrific solo goal in Saturday's 2-1 victory at home to Montpellier in Ligue 1.
After Rennes defender Sacha Boey was sent off in the 35th minute for raising a foot near left back Reinildo's head, Lille took the lead five minutes later through forward Jonathan Bamba's low shot.
Ligue 1: Rennes, Lille clinch victories at home to stay a point apart in race for last Champions league spot
Rennes and Lille both won at home on Sunday to stay one point apart in the race for third place in the French league.
Kylian Mbappe capped a brilliant individual performance by scoring twice and creating another for Mauro Icardi as leaders Paris St Germain cruised to a comfortable 4-0 victory over Dijon in their Ligue 1 clash at the Parc des Princes
Neymar was sent off as Paris Saint-Germain overcame more sloppy defending to beat Bordeaux 4-3 on Sunday and move 13 points clear at the top of the French league.
Third-placed Rennes went behind early in the second half as Damien Da Silva scored an own goal but Brazilian Rafinha equalised in the 71st minute, firing home the rebound after Mbaye Niang’s penalty was saved by Alban Lafont.