Monaco pile on misery for Marseille
With just one win in their last seven matches, the pressure is on coach Andre Villas-Boas with a cup exit compounding Marseille's modest seventh position in the league table which sees them already 11 points behind champions PSG in the title race.
Despite making seven changes from the side which started the 1-0 win over Nantes last weekend, Monaco coach Leonardo Jardim still had enough firepower to see off Marseille.
Both Monaco's goals came in the first half.
On-loan striker Jean-Kevin Augustin opened the scoring in the 25th minute from a cross from Ruben Aguilar.
Aguilar added the second goal five minutes from the interval.
Marseille grabbed a consolation in the 77th minute when Benjamin Lecomte put through his own goal.
There will be no let up for Marseille this weekend when they welcome third-placed Lille to the Stade Velodrome.