Paris Saint-Germain coach Laurent Blanc acknowledged Sunday's 3-2 win at Marseille came at a significant cost.
The French champions took a significant step towards retaining their Ligue 1 title with a come-from-behind victory at Stade Velodrome.
PSG started the match just two points ahead of third-placed Marseille - and two adrift of Lyon - but they moved back to the summit with an excellent win that came despite Andre-Pierre Gignac's first-half double for the hosts.
