From 1988 to 1992, Borac enjoyed the best period in its long history. In 1988, Borac achieved its biggest success. Under coach Husnija Fazlić team won the Yugoslav Cup, the second major football competition in the former Yugoslav football and became the only second league club that ever achieved this. In the final, Borac defeated Yugoslav football giant Red Star by 0–1 at JNA stadium in Belgrade. The historic goal was scored by Senad Lupić, one of the Borac's legends. At the ceremony, president of Yugoslav Football Association Antun Čilić gave the golden plaques to Borac players and head coach. The next day, tens of thousands of Borac supporters gathered at Krajina square in Banja Luka and gave their team a hero's welcome.