 Mamadou Niang was the hero for Marseille as the Senegal striker hit the winner in a victory over bitter rivals PSG at the Stade Vélodrome.A late error from Paris-Saint-German goalkeeper Mickaël Landreau gifted visitors Monaco a point at the Parc des Princes.A Wendel hat-trick blasted PSG away as Bordeaux hanged on to the heels of Lyon at the top of Ligue 1.