Ousmane Dembele scored twice as Paris St-Germain demolished rivals Marseille in Le Classique to move back to the top of Ligue 1.
The Ballon d'Or winner opened the scoring in the 12th minute and then doubled the lead with a fine solo goal - cutting in from the right before smashing home - 25 minutes later.
Facundo Medina then scored a 64th-minute own goal and two minutes later Dembele's lofted ball was brilliantly volleyed in by Khvicha Kvaratskhelia.
Substitute Lee Kang-in netted the fifth goal for Luis Enrique's defending champions.
The result moved them two points above surprise title contenders Lens, who beat Rennes 3-1 on Saturday.
Roberto de Zerbi's Marseille are fourth, 12 points behind PSG.