Mamadou Niang grabbed a brace as Marseille produced a second-half masterclass to earn a 3-0 away win.

OM were dominant throughout but only found a cutting edge in the final half-hour, Niang's double sandwiching a goal by fellow striker Brandao.

The Mediterranean side's sixth victory in eight league games moves them back to within a point of leaders Lyon with eight matches remaining.

Sammy Traore scored the winner against his former club as Paris St Germain downed Nice 2-1 at the Parc des Princes to return to within four points of leaders Lyon.

Loic Remy cancelled out the 20th-minute opener netted by PSG top scorer Guillaume Hoarau to level the scores before half-time.

But Traore, who played for Nice between 2002 and 2006, headed home a Stephane Sessegnon corner six minutes after the break to earn PSG a deserved three points.

The mid-table southerners' winless run stretches to six matches but PSG climb a place to fifth and back to within sight of Lyon.

Sochaux boosted their chances of survival with a stunning 3-0 victory over high-flying Rennes which saw them leap up three places in the table.

Ryad Boudebouz set the hosts on their way to victory with a penalty in the 35th minute and Mevlud Erding doubled their lead two minutes later before substitute Vaclav Sverkos capped a great day for Sochaux late on.

Sochaux move up to 14th in the table while Rennes remain in seventh but are 11 points behind leaders Lyon.