Lyon secured a Champions League place for next season after thrashing Monaco 6-1 at Parc Olympique Lyonnais.
Lyon and Monaco made it seemingly a two-horse race for second place in Ligue 1 with wins on Saturday.
Lyon climbed into second place in Ligue 1 after coming from behind to beat Toulouse 3-2 on Saturday.
PSG ripped Caen to pieces in a 6-0 thrashing at the Parc des Princes, sending the champions 30 points clear in Ligue 1.
Marseille lost more ground in their bid to play in Europe next season as a 1-1 draw at Lorient extended their winless run in Ligue 1 to six games.
Rennes recorded an emphatic 4-1 victory over Nantes on Sunday, while Lyon went one better with a 5-1 win over Guinhamp.