In 1923, Raničić coach Žižovic died suddenly of a heart attack. The Serbian Football Association issued a message to express condolences.

November 4th: The head coach of Serbian Super League team Ranic 1923 Žižovic suffered a heart attack during a game and passed away on the way to the hospital. The Serbian Football Association posted a message on social media to express condolences.

"The Serbian Football Association learned with deep sadness and shock that the head coach of Ranic 1923 Football Club, Žižovic, suddenly passed away during the game at the age of 45. The sudden death of this coach caused a huge loss to the entire football world. Serbia The Asian Football Association expresses its deepest condolences to the Zhirovic family, members of the Ranic 1923 Club and all those who miss him. "Rest in peace, Mladen. Your love for football and the mark you left will always be engraved in our hearts."