"The satisfaction is enormous. We will see if this victory will have any importance at all, we came here with a goal to avoid relegation, but to win against Serbia is sweet and wonderful," said Radonjic.
"We beat a team that has more quality than us, a team that is among the favorites to win this European Championship.
"Our motivation has never been in question. It is our biggest weapon. All these guys play domestic league in Montenegro, most of them are in such a big European competition for the first time, and we all together have a great desire to show all we can at this Championship."
A strong second quarter performance by Montenegro laid the platform for the win and also gave them some breathing space after a late charge by Serbia had them briefly biting their nails.
After a tight first quarter during which neither team could make any decisive headway, Montenegro stepped up their defensive pressure and broke the game open by holding Serbia to just seven second quarter points.
That handed them a 34-25 advantage heading into the locker rooms and they soon extended their lead to sixteen points before Serbia finally found some momentum in the last quarter.
Dejan Musli registered 13 points and 7 rebounds for Serbia but they found it difficult matching Montenegro on the glass and couldn't find the consistency they needed from downtown.