The story
The first five editions from 1953 to 1957 were decided via a finals play-off tournament contested by clubs who had qualified in regional competitions, before a regular round-robin league format was introduced for the 1957–58 season. The league featured clubs from all of Yugoslavia's federal subjects, with the most successful being RK Bjelovar with 9 titles, followed by RK Borac Banja Luka and RK Metaloplastika with 7 titles each.
Following the dissolution of Yugoslavia in the early 1990s, the competition was eventually succeeded by the following handball leagues:
Handball Championship of Bosnia and Herzegovina
Croatian Handball Premier League
Macedonian Handball Super League
Montenegrin Men's Handball First League
Serbian Handball Super League
Slovenian First League
From Wikipedia’s article on Yugoslav Handball Championship, shared under CC BY-SA 4.0.3