Germany, Montenegro, Slovenia and Bulgaria all got off to winning starts in the Qualifying Round for places one through eight at the U16 European Championship Division B in Sarajevo.
In Group E, the Germans prevailed 106-70 over hosts Bosnia-Herzegovina while Montenegro edged Belarus 82-80.
Mathis Mönninghoff had 24 points for Germany, who have yet to lose in the competition.
They are now 2-0 along with Montenegro since both teams finished top of their preliminary round groups.
Nemanja Djurisic had 33 points for the Montenegrins in their narrow victory.
In Group F, Jaka Brodnik had 14 points and 11 rebounds for Slovenia in their 65-56 triumph over Finland.
Meanwhile, Georgi Sirakov poured in 28 for Bulgaria, who won 66-58 over Sweden.
The Slovenians have a 2-0 mark while Bulgaria, who did not finish top of their preliminary round group, improved to 1-1 in Group F.