Enes Latifagic and Adis Drina each scored 15 points as the Bosnians prevailed 80-47 over Denmark in Group B.
Montenegro are also 2-0 after a 93-75 triumph over the Netherlands.
Mladen Novakovic and Stefan Djordan had 18 points apiece for the Montenegrins.
Iceland defeated Austria 69-58 in the other Group B game.
Germany are off to a perfect 2-0 start after blowing out Belarus in Group A, 87-54.
Philipp Neumann scored 17 points and pulled down 17 rebounds for the Germans.
Estonia lost 81-59 to Belgium and Slovakia edged 90-87.
Estonia, Belarus, Belgium and Slovakia all have 1-1 records.
In Group C, Slovenia improved to 2-0 after edging a close encounter with Switzerland, 78-74.
Bulgaria are also 2-0 following a 73-61 victory over England.
Romania won 65-56 over Cyprus.
The Swiss and Romanians are 1-1 while the English and Cypriots are both 0-2.
Sweden are 2-0 in Group D following a 63-57 victory over Finland (1-1) and FYR Macedonia are 1-0 after an 88-57 triumph over Portugal (0-2).