The black-whites finished the first period of the match played at the Ekinox Sports Hall in the Bourg-en-Bresse region of France with a 26-24 lead and went into the locker room leading 52-50.
Beşiktaş GAİN increased its tempo in the last quarter of the match, which ended 76-76 in the third period, and left the field victorious 103-99.
Ante Zizic played an important role in the victory for the black-whites with 26 points.
For the French representative, Darius McGhee stood out with 25 points.
Thus, Beşiktaş GAİN got its 10th victory in Group B. Cosea suffered its 3rd defeat in the group.