EuroBasket
I see your also a fan on the EuroBasket, In fact the first championships for the eurobasket were held three years after the establishment of FIBA way back in 1935.
Who played?
Well Switzerland was chosen as country to host the game, and after that ten other countries joined as far as I know. 
Which ten?
I'm not really sure sorry, But I love to see how your a huge fan. 
I just want to go play there myself
Well you cant play anymore because only one match was played and that was between Portugal and Spain.
Oh that's a shame
a complicated formula, the final would see Latvia as champions. According to the rule at the time, the winner had to hold the following games. The following two tournaments would be won by Lithuania and would see the introduction of Egypt which would compete in EuroBasket until 1953 winning one championship at home in 1949 along the way.
History Soviet dominance.
After the 1946 edition saw the first jump shot performed by Italian player Giuseppe Stefanini, the following edition would see the Soviet Union compete in their first edition in the 1947
EuroBasket
EuroBasket, also commonly referred to as the "European Basketball Championship", is the main international basketball competition that is contested quadrennialy, by the senior men's national teams that are governed by FIBA Europe, which is the European zone within the International Basketball Federation.
History.
History Beginning.
The first championships was held three years after the establishment of FIBA, in 1935. Switzerland was chosen as the host country, and ten countries joined. Only one qualifying match was played between Portugal and Spain. With