In their first game under new ownership, Nice drew level on points with leaders Paris Saint-Germain on Sunday when they inflicted a first defeat of the season on Rennes.
Nice moved onto nine point after four games, the same as Rennes as well as champions PSG and Angers, who both won earlier in the weekend. The Parisians already have a significant advantage in goal difference.
In the other early game on Sunday, last season’s runners up Lille lost 2-0 at Reims.
In their first match since English petrochemical billionaire Jim Ratcliffe completed his purchase of the club, Nice started badly at Roazhon Park.
Defender Gautier Lloris, the little brother of Tottenham goalkeeper Hugo, scored an own goal at a corner after 25 minutes.
The visitors dominated the second half and won a penalty when Benjamin Bourigeaud and Hamari Traore sandwiched Youcef Atal. Wylan Cyprien converted from the spot.
Nice won the game two minutes into added time. Racine Coly, at the far post from a corner, scored the winner with his knee.
In Champagne country, Lille finished with 10 men.
The game was still goalless when Lille midfielder Yusuf Yazici received a second yellow card after 52 minutes.
The visitors conceded a penalty for a foul on Moussa Doumbia, and after a delay for video review, the winger converted in the 73rd minute.
In the 90th minute, Remi Oudin’s cross flew into the Lille net.
The visitors won a penalty deep into added time, but goalkeeper Pedrag Rajkovic pushed Jonathan Bamba’s spot kick onto the post. New signing Renato Sanches was first to the rebound but missed the goal.
Later on Sunday struggling Monaco travel to Strasbourg and Marseille host Saint-Etienne.