DKV Joventut defeated Gravelines 72-59 to complete their Group H campaign with five victories and one defeat.
DKV, having secured their place in Round II last week by coming from behind to beat Dynamo Moscow Region in Spain, stormed out to a 24-14 first-quarter.
The visitors from France cut the deficit to 33-27 at half-time, but DKV stamped their authority on the game in the third quarter when they outscored Gravelines 22-16.
Rudy Fernandez, DKV's Spanish international, had 15 points and five rebounds.
The French team finished with one victory and five defeats.
Joining DKV in Round II is Dynamo Moscow Region, who defeated Galil Elyon earlier in the day.