Losc held out for a little over an hour before dropping the flag against Arsenal, reigning European vice-champion (0-3), Tuesday October 13, during the second day of the league phase.
Already beaten by Betis for their entry into contention (2-3), the Mastiffs remain stuck at zero points after two matches in the league phase.
The latter's entry into play caused a lot of damage to a Lille defense stunned by the opening score.
The northern club ended the evening with only four shots attempted and no shots on target, compared to 15 shots including 8 on target for Arsenal.
If it intends to participate in the knockout phase, Losc will have to bounce back as quickly as possible to score its first points.