Olympia Larissa beat Zlatorog 72-64 in the first game of their Elimination Round 2 tie, although they will be disappointed not to be taking a bigger lead into next week's second leg.
After a tight first period finished 14-14, the visitors ran riot in the second period to take a 34-18 lead at half-time.
They were still well in front with a quarter left to play, leading 52-39 after the third.
But Grega Mali scored six points in a row to get the home side back in it, and an Ante Masic dunk closed the gap to 58-56 for the Slovenian side.
LaMarr Greer sunk consecutive shots from behind the arc to open up an eight-point lead for Olympia with 1:21 on the clock and this time they hung on.
Greer top-scored with 21 points, while Germany international Stephen Arigbabu dominated the boards, pulling down eight rebounds.
Damjan Novakovic, coach Zlatorog:
"In the second quarter we played very, very bad. It was like a nightmare. We have a lot of inexperienced players, we missed a lot of shots and Olympia is one step from the Top-16.2
Nemanja Jelesijevic, Zlatorog:
"We almost cut the deficit and then I made a mistake when LaMarr Green hit an open three-pointer."
Georgios Bartzokas, coach Olympia:
"It was tought game for us because we had lost our previous two games at the buzzer. In the first half we played well but then lost the rythm. Zlatorog had plenty of athletic players but Greer hit two three-pointers and handed us the win."
Stephan Arigbabu, Olympia:
"In the first half we controlled the defensive game and outrebounded our opponent. In the second half we lost the rebounds but Greer made a crazy three-pointer and we won. But it was only the first of two games."