Monaco kept up their outstanding recent form as Valere Germain scored twice in a 4-0 win over Marseille on Saturday.
PSG moved joint-top of Ligue 1 after goals from Angel Di Maria and Jese Rodriguez helped them to a 2-0 win over Nantes.
Monaco missed the chance to close the gap on Ligue 1 leaders Nice while Alexandre Lacazette scored twice for Lyon.
Lyon's alarming slump in form continued on Saturday as they lost 3-1 at home to Guingamp.
Monaco thrashed 10-man Metz 7-0, while there were wins for Lille, Caen, Nantes and PSG in Ligue 1 on Saturday.
Montpellier have announced the signing of Stephane Sessegnon on a two-year contract.