The International Basketball Federation was formed in 1936, and four years later, on 20 November 1940, the Basketball Federation of Yugoslavia was established and became a member of FIBA, which had 36 members at the time. The Belgrade Championship was held in 1942, and the history of Yugoslavian basketball began, with Raša and Sveta Šaper defending the colours of BASK. At first, basketball was played in the House of King Alexander, then in Sokolana, but the sport of basketball did not truly come alive until early 1945. The generation of players that grew up during the war years welcomed the end of the war in the spring of 1945, and the first basketball court was laid out on the tennis courts at Mali Kalemegdan. It was at this time that Raša and his fellow players joined the newly formed Red Star basketball club.