Proteas EKA AEL poured in the game's first 13 points and led the entire way in an 86-62 demolition of Allianz Swans in Limassol.
Vujadin Subotic and Aleksandar Radojevic scored 17 apiece for Proteas, who also got 16 from LaVell Blanchard in the EuroChallenge Group D triumph.
Swans tried to keep the game close and trailed 28-18 midway through the second quarter but Subotic hit consecutive three-pointers and Radojevic followed with a jump shot as the Cyprus giants opened up a 36-18 advantage.
By half-time, the lead had ballooned to 48-22 and there was no way back for Swans.
At the break, Radojevic had eight points, Blanchard 10 and Subotic 11.
Subotic finished four of five from behind the arc.
Blanchard also had a game-high eight rebounds for Proteas (2-1).
Swans (0-3) got 16 points from Anthony Fisher, 10 from Deteri Mayes and nine from Peter Hütter.
Bob Gonnen (Head Coach Allianz Swans Gmunden):
"Congratulations to AEL. We lost the game. We made a lot of errors. We lost rightly. AEL played better than us."
Dragan Raca (Head Coach Proteas EKA AEL):
"We watched Allianz in their previous games an we noticed that this is a serious team. We played good defense and we won."
Peter Hutter (Player Allianz Swans Gmunden):
"I will agree with my coach. We made a lot of errors. We tried for the better possible result in the second half but we lost."
Aleksandar Radojevic (Player Proteas EKA AEL):
"It is very important for us the victory against Allianz Swans Gmunden. I hope that we will go on for victories in the next games."