Radnik enjoyed average success during Yugoslavia, and its most impressive results came with independence of Croatia. With a newly built stadium for 1987 Summer Universiade Radnik were champions of the first ever Croatian second division. In doing so they were promoted to the highest level Croatian league. Radnik competed there for two seasons, 1992–93 and 1993–94. After being relegated, Radnik started a downfall, obtaining mediocre results which resulted in them playing in the fourth tier of Croatian league football for four seasons (from 2002 till 2006).