Damjan Rudez poured in 20 points to help fire Cedevita Zagreb to an 85-71 win over Dexia Mons-Hainaut.
Tuesday's EuroChallenge Group D game was much closer than the final score suggests.
After trailing 60-53 early in the fourth quarter, Dexia battled back and twice knotted the game.
Brandon Costner split two free-throws to tie the contest at 65-65.
After Canada point guard Jermaine Anderson hit a three-pointer for Cedevita, Costner answered with a long-range shot for Dexia to make it 68-68 with 3:58 to play.
The momentum then swung the home side's way.
Anderson went in for a lay-up to give the Croatian club a two-point edge and Justin Cage only made one of two free-throws to trim the deficit to 70-69.
Barisa Krasic made two free-throws for Cedevita and Dexia point guard Nate Reinking was whistled for travelling.
Cedevita went on to score nine straight points to take command of the game.
Dexia might have won the game had they shot the ball better at the free-throw line.
The Belgian club was 16 of 30 from the stripe for a woeful 53.3%.
Both clubs are now 1-2.