But Clement Grenier pulled one back in the 42nd minute and leveled 10 minutes later from the penalty spot following a handball.
Things took a turn for the worse for Marseille when goalkeeper Steve Mandanda was issued a red card and conceded a penalty for a reckless tackle on striker Jimmy Briand, who converted the spot kick to put his team in the lead with 20 minutes left.
Marseille was rewarded for its effort to equalize in the 81st when Thauvin connected with a cross from Bouna Sarr to score his 22nd league goal. Marseille finished the game with nine players after Sarr was forced to leave the pitch injured with three minutes left.
”We are all disappointed and angry,” Thauvin said. ”We had a 2-0 lead, we should not have been caught up, this is not a good match.”