* Lille leapfrog Marseille, who play game in hand on Sunday
* PSG keep bid for Champions League spot on track
* Lens's hopes of staying in top flight dashed (Adds details)
Lille crushed relegated Arles-Avignon 5-0 to regain top spot in Ligue 1 helped by a Gervinho double on Saturday.
Ivory Coast striker Gervinho struck twice before halftime and Mathieu Debuchy, Yohan Cabaye and David Rozenhal completed the rout after the break.
Arles were reduced to 10 men shortly before the hour when Emmanuel Correze was sent off.
Lille have 63 points from 33 games with five matches left ahead of Olympique Marseille on 61 from 32 with the champions playing on Sunday at home to lowly AJ Auxerre.
Fourth-placed Paris St Germain kept their bid for a Champions League qualifying place on track when first-half goals by Nene and Mathieu Bodmer and a late goal by Mamadou Sakho gave them a 3-1 home win against Valenciennes.
PSG are behind Olympique Lyon on goal difference before the seven-times champions visit Toulouse on Sunday.
The third-placed team earns a spot in the Champions League playoffs while the top two qualify for the group stage.
Lille raced into the lead when Gervinho latched on to a Debuchy cross to score from close range after six minutes.
Arles, who have won only one game this season, then held out until just before the break when Gervinho doubled Lille's tally after being set up by Eden Hazard's through pass.
Debuchy made it 3-0 from the penalty spot four minutes into the second half and things went from bad to worse for Arles when midfielder Correze was sent off in the 59th minute for picking up a second yellow card.
Midfielder Cabaye made it 4-0 with a finely struck 25-metre freekick and Czech defender Rozenhal rounded off the scoring with a fine lob in the 89th minute.
Stade Rennes, who are in fifth spot four points behind PSG, could only manage a goalless draw against Girondins Bordeaux in their seventh consecutive league game without a win.
RC Lens's hopes of staying in the top flight were hit when they suffered a 3-2 home defeat by Lorient after leading 2-1.
Lens, the 1998 French champions, are second from bottom, eight points from safety with five games to play.