Alassane Plea's goal earned Nice a 1-0 win over AS Nancy on Sunday that moves them top of Ligue 1.
Mario Balotelli scored twice as Nice beat Monaco 4-0 to go top of Ligue 1, while there were also wins for Lyon and Bordeaux.
Thomas Lemar fired a late double as Monaco moved three points clear of PSG at the top of Ligue 1 with a 3-0 win against Rennes.
Monaco returned to the top of the Ligue 1 table thanks to a thumping 4-1 win in Lille on Saturday.
Alexandre Lacazette was forced off with a knee injury as Lyon slipped up to Dijon, while Nice were held by Lille.
Alexandre Lacazette scored a hat-trick as Lyon started their Ligue 1 season with a 3-0 win at newly-promoted Nancy on Sunday.