Zalgiris Kaunas led from start to finish and decimated Gran Canaria at home (98-64).
The Lithuanians were in front by 15 in the opening quarter and closed the first half with a 19-point advantage (46-27).
Zalgiris kept playing excellent and extended its lead to 32 points (77-45) to cruise to an easy victory.
Five players scored in double figures for the winners, with Edgaras Ulanovas leading the way with 18 points.
Only Marcus Eriksson and Jacob Wiley stood out for the losing squad, with 13 and 10 points, respectively.
Zalgiris improved to 10-15 and remained alive in the qualification race, whereas Gran Canaria dropped to 6-19.
