Marseille condemned bottom side Dijon to an 11th defeat in a row as Sunday’s 2-0 victory gave coach Jorge Sampaoli a third win in four Ligue 1 games since taking charge.
Leonardo Balerdi powered in a header at a corner in first-half stoppage time and Alvaro Gonzalez nodded in a second from another Dimitri Payet cross on 79 minutes.
Marseille climbed to within a point of fifth-placed Lens, who drew 1-1 with title hopefuls Lyon on Saturday.
Dijon have just 15 points after two wins in 31 games and are destined for relegation, 14 points adrift of the relegation play-off spot.
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Lille moved three points clear of Paris Saint-Germain at the top following a 1-0 win at the Parc des Princes on Saturday, in which Neymar was sent off just before the end.
Monaco are a point back of PSG after routing Metz 4-0 with Lyon another point behind with seven rounds of matches remaining in France.
