Marseille coach Elie Baup rued his team’s poor start after they crashed to a 4-1 loss to Valenciennes in Ligue 1 on Sunday.
The league leaders dropped points for the first time this season as Anthony Le Tallec netted a brace for the victors at Stade du Hainaut.
Former Liverpool striker Le Tallec, Gael Danic and Foued Kadir all netted in the first half as the hosts stunned Marseille.
Baup said his team’s efforts in the first half cost them, but dismissed suggestions they were complacent heading into the clash.
“It was not a question of overconfidence from us. We made a poor start today. They did some very efficient pressing on us,” Baup said.
“We could not move the ball around. We were in trouble every time we lost the ball.
“In the air, they were better than us. A lot of things did not work, especially in the first 15 minutes.”
Marseille were unable to recover from their lacklustre first half and fell further behind in the 63rd minute when Le Tallec completed his brace.
Jordan Ayew scored a late consolation for Baup’s side, but the coach said the damage had been done in the first half.
“At 3-0 down at half-time, it was complicated for us even though we tried some things,” he said.
“We were still in trouble on the counter-attacks though. The second half ended 1-1, but the three goals in the first half definitely left a mark on the group.”