Montenegro were among the favorites to win promotion before the start of EuroBasket Division B and eight victories in eight Group A games suggests they will be successful.
Dusko Vujosevic's side remained undefeated with an 82-65 victory at Denmark on Saturday.
Montenegro clinched a spot in the EuroBasket Division B play-offs with a resounding victory over Austria in Oberwart on Saturday night.
Panathinaikos center Nikola Pekovic led a balanced scoring attack with 14 points as the Montenegrins cruised to an 86-63 victory to seal first place in Group A.
The Netherlands defeated Austria for the second time in EuroBasket Division B to take a firm grip on second place in Group A.
Gadi Kedar's men, who claimed a narrow victory in the first encounter between the sides in Austria, completed a sweep by rolling to an 83-60 home triumph.
Austria gave their bid to finish second in Group A of EuroBasket Division B a shot in the arm with a 92-61 mauling of Denmark on Saturday on Oberwart.
After winning two of their four games last year, the Austrians began the 2009 campaign in style after storming out to a 28-14 advantage.