Lyon secured a Champions League place for next season after thrashing Monaco 6-1 at Parc Olympique Lyonnais.
Monaco missed the chance to return to second place in Ligue 1 after conceding a late goal to draw 1-1 at Rennes.
PSG ripped Caen to pieces in a 6-0 thrashing at the Parc des Princes, sending the champions 30 points clear in Ligue 1.
Lyon moved into the Champions League qualification places in Ligue 1 after coming from behind to beat Lorient 3-1 on Sunday.
Paris St Germain slipped to their first home league defeat in nearly two years as Monaco recorded a shock 2-0 win.
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.