After beating Reims at home (2-1), Lille continued on Saturday a second success by winning in Strasbourg (1-2).
David scored twice (23rd, 57th) for the Northerners, including a penalty, before Sissoko reduced the score for the Alsatians at the end of the match (75th).
Lille goes up to 8th place, Strasbourg is 10th.
Ligue 1 fixtures and results
League 1 standings